/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:44:37,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:44:37,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:44:37,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:44:37,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:44:37,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:44:37,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:44:37,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:44:37,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:44:37,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:44:37,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:44:37,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:44:37,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:44:37,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:44:37,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:44:37,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:44:37,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:44:37,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:44:37,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:44:37,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:44:37,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:44:37,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:44:37,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:44:37,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:44:37,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:44:37,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:44:37,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:44:37,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:44:37,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:44:37,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:44:37,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:44:37,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:44:37,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:44:37,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:44:37,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:44:37,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:44:37,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:44:37,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:44:37,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:44:37,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:44:37,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:44:37,067 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:44:37,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:44:37,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:44:37,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:44:37,083 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:44:37,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:44:37,083 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:44:37,083 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:44:37,083 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:44:37,083 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:44:37,084 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:44:37,084 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:44:37,084 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:44:37,084 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:44:37,084 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:44:37,084 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:37,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:44:37,085 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:44:37,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:44:37,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:44:37,085 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:44:37,086 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:44:37,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:44:37,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:44:37,086 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:44:37,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:44:37,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:44:37,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:44:37,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:44:37,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:44:37,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:44:37,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:44:37,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:44:37,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:44:37,268 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:44:37,269 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:44:37,378 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_Xo7eku/tmp/0eeac276b5d44f598a61cf867e8e3c7f/FLAG3276030c2 [2020-07-01 12:44:37,703 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:44:37,704 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:44:37,711 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_Xo7eku/tmp/0eeac276b5d44f598a61cf867e8e3c7f/FLAG3276030c2 [2020-07-01 12:44:38,114 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_Xo7eku/tmp/0eeac276b5d44f598a61cf867e8e3c7f [2020-07-01 12:44:38,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:44:38,126 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:44:38,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:44:38,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:44:38,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:44:38,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@587ab951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38, skipping insertion in model container [2020-07-01 12:44:38,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:44:38,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:44:38,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:44:38,397 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:44:38,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:44:38,430 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:44:38,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38 WrapperNode [2020-07-01 12:44:38,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:44:38,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:44:38,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:44:38,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:44:38,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:44:38,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:44:38,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:44:38,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:44:38,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:44:38,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:44:38,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:44:38,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:44:38,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:44:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:44:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:44:38,735 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:44:38,735 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:44:38,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:44:38 BoogieIcfgContainer [2020-07-01 12:44:38,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:44:38,739 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:44:38,739 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:44:38,741 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:44:38,742 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:44:38" (1/1) ... [2020-07-01 12:44:38,755 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 12:44:38,756 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:44:38,757 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:44:38,757 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:44:38,758 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:44:38,759 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:44:38,760 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:44:38,760 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:44:38,775 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:44:38,789 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 12:44:38,793 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:44:38,795 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:44:38,805 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 12:44:38,807 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 12:44:38,809 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:44:38,809 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:44:38,809 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:44:38,809 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:44:38,810 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 7 edges [2020-07-01 12:44:38,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:44:38 BasicIcfg [2020-07-01 12:44:38,811 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:44:38,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:44:38,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:44:38,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:44:38,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:44:38" (1/4) ... [2020-07-01 12:44:38,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29186575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:44:38, skipping insertion in model container [2020-07-01 12:44:38,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (2/4) ... [2020-07-01 12:44:38,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29186575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:44:38, skipping insertion in model container [2020-07-01 12:44:38,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:44:38" (3/4) ... [2020-07-01 12:44:38,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29186575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:44:38, skipping insertion in model container [2020-07-01 12:44:38,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:44:38" (4/4) ... [2020-07-01 12:44:38,819 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:44:38,829 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:44:38,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:44:38,850 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:44:38,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:44:38,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:44:38,873 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:44:38,873 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:44:38,873 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:44:38,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:44:38,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:44:38,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:44:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 12:44:38,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:44:38,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 12:44:38,947 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:44:38,947 INFO L271 CegarLoopResult]: At program point L27-1(lines 21 36) the Hoare annotation is: true [2020-07-01 12:44:38,947 INFO L268 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-07-01 12:44:38,948 INFO L268 CegarLoopResult]: For program point L22-2(lines 21 36) no Hoare annotation was computed. [2020-07-01 12:44:38,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:44:38 BasicIcfg [2020-07-01 12:44:38,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:44:38,957 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:44:38,957 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:44:38,960 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:44:38,961 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:44:38,961 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:44:38" (1/5) ... [2020-07-01 12:44:38,962 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ca7ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:44:38, skipping insertion in model container [2020-07-01 12:44:38,962 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:44:38,962 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:44:38" (2/5) ... [2020-07-01 12:44:38,963 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ca7ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:44:38, skipping insertion in model container [2020-07-01 12:44:38,963 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:44:38,963 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:44:38" (3/5) ... [2020-07-01 12:44:38,963 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ca7ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:44:38, skipping insertion in model container [2020-07-01 12:44:38,963 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:44:38,963 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:44:38" (4/5) ... [2020-07-01 12:44:38,964 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ca7ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:44:38, skipping insertion in model container [2020-07-01 12:44:38,964 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:44:38,964 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:44:38" (5/5) ... [2020-07-01 12:44:38,966 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:44:38,994 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:44:38,994 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:44:38,994 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:44:38,994 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:44:38,995 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:44:38,995 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:44:38,995 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:44:38,995 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:44:38,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 12:44:39,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 12:44:39,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:44:39,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:44:39,022 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:44:39,022 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:44:39,022 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:44:39,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 12:44:39,023 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 12:44:39,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:44:39,023 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:44:39,023 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:44:39,023 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:44:39,028 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [34] ULTIMATE.startENTRY-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 3#L27-1true [2020-07-01 12:44:39,029 INFO L796 eck$LassoCheckResult]: Loop: 3#L27-1true [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 5#L22true [35] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 6#L22-2true [40] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 3#L27-1true [2020-07-01 12:44:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:39,035 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-07-01 12:44:39,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:39,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099600514] [2020-07-01 12:44:39,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:39,118 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:39,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:39,120 INFO L82 PathProgramCache]: Analyzing trace with hash 61668, now seen corresponding path program 1 times [2020-07-01 12:44:39,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:39,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447058025] [2020-07-01 12:44:39,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:39,143 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:39,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:39,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1968292, now seen corresponding path program 1 times [2020-07-01 12:44:39,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:39,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092068483] [2020-07-01 12:44:39,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:39,164 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:39,272 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:39,273 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:39,273 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:39,273 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:39,273 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:44:39,273 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:39,273 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:39,274 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:39,274 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:44:39,274 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:39,274 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:39,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:39,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:39,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:39,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:39,429 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:39,430 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:39,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:39,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:39,447 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:44:39,448 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:39,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:39,486 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:39,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:44:39,491 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:39,526 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:39,526 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:39,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:44:39,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:39,611 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:44:39,613 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:39,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:39,635 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:39,635 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:39,635 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:44:39,635 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:39,635 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:39,635 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:39,635 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:44:39,635 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:39,636 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:39,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:39,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:39,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:39,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:39,747 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:39,753 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:39,760 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:39,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:39,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:39,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:39,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:39,769 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:44:39,770 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:44:39,776 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:39,810 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:39,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:39,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:39,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:39,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:39,816 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:44:39,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:44:39,821 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:39,855 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:39,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:39,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:44:39,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:39,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:39,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:39,859 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:44:39,860 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:44:39,862 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:39,894 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:39,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:39,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:44:39,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:39,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:39,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:39,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:44:39,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:44:39,905 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:44:39,912 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:44:39,912 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:39,917 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:44:39,917 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:44:39,917 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:44:39,918 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 12:44:39,952 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:44:39,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:39,982 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:44:39,983 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:39,997 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:44:39,997 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:44:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:40,090 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 12:44:40,090 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 12:44:40,097 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 12:44:40,098 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-07-01 12:44:40,240 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 13 states and 26 transitions. Complement of second has 10 states. [2020-07-01 12:44:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 12:44:40,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:44:40,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-07-01 12:44:40,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 12:44:40,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:40,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 12:44:40,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:40,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 12:44:40,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:40,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 26 transitions. [2020-07-01 12:44:40,257 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 12:44:40,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 10 states and 18 transitions. [2020-07-01 12:44:40,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 12:44:40,263 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 12:44:40,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 18 transitions. [2020-07-01 12:44:40,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:44:40,264 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-07-01 12:44:40,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 18 transitions. [2020-07-01 12:44:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-01 12:44:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 12:44:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2020-07-01 12:44:40,295 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-07-01 12:44:40,295 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-07-01 12:44:40,295 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:44:40,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 18 transitions. [2020-07-01 12:44:40,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 12:44:40,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:44:40,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:44:40,297 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 12:44:40,297 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:44:40,298 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 73#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 71#L22 [42] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 74#L22-2 [47] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 67#L27-1 [2020-07-01 12:44:40,298 INFO L796 eck$LassoCheckResult]: Loop: 67#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 68#L22 [35] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 76#L22-2 [40] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 67#L27-1 [2020-07-01 12:44:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:40,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1968516, now seen corresponding path program 1 times [2020-07-01 12:44:40,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:40,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214609790] [2020-07-01 12:44:40,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:40,313 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:40,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:40,314 INFO L82 PathProgramCache]: Analyzing trace with hash 61668, now seen corresponding path program 2 times [2020-07-01 12:44:40,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:40,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164626903] [2020-07-01 12:44:40,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:40,327 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:40,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:40,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1485450111, now seen corresponding path program 1 times [2020-07-01 12:44:40,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:40,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084682028] [2020-07-01 12:44:40,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:44:40,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084682028] [2020-07-01 12:44:40,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034102958] [2020-07-01 12:44:40,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:44:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:40,438 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 12:44:40,439 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:44:40,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-01 12:44:40,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-07-01 12:44:40,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815397157] [2020-07-01 12:44:40,553 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:40,553 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:40,553 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:40,553 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:40,553 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:44:40,553 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:40,553 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:40,554 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:40,554 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:44:40,554 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:40,554 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:40,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:40,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:40,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:40,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:40,669 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:40,669 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:40,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:40,673 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:40,678 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:44:40,678 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:40,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:40,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:40,715 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:44:40,716 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:40,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:40,749 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:40,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:44:40,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:44,899 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:44:44,902 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:44,915 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:44,915 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:44,915 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:44,915 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:44:44,916 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:44,916 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:44,916 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:44,916 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:44:44,916 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:44,916 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:44,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:44,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:44,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:44,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:45,015 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:45,016 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:45,019 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:45,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:45,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:45,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:45,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:45,024 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:44:45,025 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:44:45,029 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:45,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:45,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:45,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:45,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:45,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:45,066 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:44:45,066 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:44:45,070 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:45,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:45,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:45,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:44:45,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:45,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:45,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:45,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:44:45,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:44:45,131 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:44:45,136 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:44:45,136 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:45,139 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:44:45,139 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:44:45,139 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:44:45,140 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 12:44:45,170 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:44:45,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:45,189 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:44:45,189 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:45,195 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:44:45,195 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:44:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:45,245 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 12:44:45,245 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 12:44:45,245 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 12:44:45,245 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states and 18 transitions. cyclomatic complexity: 10 Second operand 4 states. [2020-07-01 12:44:45,328 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states and 18 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 33 states and 63 transitions. Complement of second has 20 states. [2020-07-01 12:44:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 12:44:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:44:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-07-01 12:44:45,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 12:44:45,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:45,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 7 letters. Loop has 3 letters. [2020-07-01 12:44:45,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:45,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 12:44:45,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:45,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 63 transitions. [2020-07-01 12:44:45,335 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2020-07-01 12:44:45,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 25 states and 46 transitions. [2020-07-01 12:44:45,336 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-07-01 12:44:45,336 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-07-01 12:44:45,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 46 transitions. [2020-07-01 12:44:45,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:44:45,337 INFO L688 BuchiCegarLoop]: Abstraction has 25 states and 46 transitions. [2020-07-01 12:44:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 46 transitions. [2020-07-01 12:44:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 10. [2020-07-01 12:44:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 12:44:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2020-07-01 12:44:45,339 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-07-01 12:44:45,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:44:45,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 12:44:45,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-01 12:44:45,342 INFO L87 Difference]: Start difference. First operand 10 states and 18 transitions. Second operand 5 states. [2020-07-01 12:44:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:44:45,402 INFO L93 Difference]: Finished difference Result 21 states and 36 transitions. [2020-07-01 12:44:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-01 12:44:45,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 36 transitions. [2020-07-01 12:44:45,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2020-07-01 12:44:45,406 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 36 transitions. [2020-07-01 12:44:45,406 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-07-01 12:44:45,406 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-07-01 12:44:45,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 36 transitions. [2020-07-01 12:44:45,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:44:45,406 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 36 transitions. [2020-07-01 12:44:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 36 transitions. [2020-07-01 12:44:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2020-07-01 12:44:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-01 12:44:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 29 transitions. [2020-07-01 12:44:45,409 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 29 transitions. [2020-07-01 12:44:45,409 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 29 transitions. [2020-07-01 12:44:45,409 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:44:45,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 29 transitions. [2020-07-01 12:44:45,410 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-07-01 12:44:45,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:44:45,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:44:45,410 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:44:45,411 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:44:45,411 INFO L794 eck$LassoCheckResult]: Stem: 238#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 239#L27-1 [2020-07-01 12:44:45,411 INFO L796 eck$LassoCheckResult]: Loop: 239#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 237#L22 [35] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 248#L22-2 [47] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 239#L27-1 [2020-07-01 12:44:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:45,411 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 2 times [2020-07-01 12:44:45,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:45,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135574862] [2020-07-01 12:44:45,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:45,417 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:45,418 INFO L82 PathProgramCache]: Analyzing trace with hash 61675, now seen corresponding path program 1 times [2020-07-01 12:44:45,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:45,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514909134] [2020-07-01 12:44:45,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:45,428 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:45,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:45,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1968299, now seen corresponding path program 1 times [2020-07-01 12:44:45,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:45,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272329431] [2020-07-01 12:44:45,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:45,440 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:45,479 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:45,479 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:45,479 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:45,479 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:45,480 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:44:45,480 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:45,480 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:45,480 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:45,480 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:44:45,480 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:45,480 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:45,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:45,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:45,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:45,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:45,549 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:45,549 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:45,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:45,552 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:45,556 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:44:45,556 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:45,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:45,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:45,593 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:44:45,593 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:45,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:45,626 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:45,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:44:45,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:45,753 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:44:45,755 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:45,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:45,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:45,756 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:45,756 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:44:45,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:45,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:45,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:45,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:44:45,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:45,756 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:45,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:45,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:45,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:45,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:45,832 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:45,832 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:45,836 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:45,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:45,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:44:45,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:45,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:45,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:45,839 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:44:45,839 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:44:45,841 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:45,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:45,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:45,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:45,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:45,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:45,877 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:44:45,877 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:44:45,881 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:45,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:45,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:45,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:44:45,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:45,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:45,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:45,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:44:45,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:44:45,920 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:44:45,926 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 12:44:45,926 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:45,928 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:44:45,928 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:44:45,928 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:44:45,929 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:44:45,958 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:44:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:45,972 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:44:45,972 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:45,977 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 12:44:45,977 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:44:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:46,022 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 12:44:46,022 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 12:44:46,022 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 12:44:46,022 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 17 states and 29 transitions. cyclomatic complexity: 13 Second operand 4 states. [2020-07-01 12:44:46,104 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 17 states and 29 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 70 states and 121 transitions. Complement of second has 10 states. [2020-07-01 12:44:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 12:44:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:44:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-07-01 12:44:46,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 12:44:46,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:46,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 12:44:46,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:46,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 12:44:46,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:46,108 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 121 transitions. [2020-07-01 12:44:46,111 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2020-07-01 12:44:46,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 48 states and 84 transitions. [2020-07-01 12:44:46,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-07-01 12:44:46,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-07-01 12:44:46,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 84 transitions. [2020-07-01 12:44:46,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:44:46,113 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 84 transitions. [2020-07-01 12:44:46,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 84 transitions. [2020-07-01 12:44:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 24. [2020-07-01 12:44:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-01 12:44:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 43 transitions. [2020-07-01 12:44:46,117 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 43 transitions. [2020-07-01 12:44:46,117 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 43 transitions. [2020-07-01 12:44:46,117 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 12:44:46,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 43 transitions. [2020-07-01 12:44:46,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-07-01 12:44:46,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:44:46,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:44:46,118 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:44:46,118 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:44:46,119 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 373#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 374#L22 [2020-07-01 12:44:46,119 INFO L796 eck$LassoCheckResult]: Loop: 374#L22 [42] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 375#L22-2 [47] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 385#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 374#L22 [2020-07-01 12:44:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:46,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2047, now seen corresponding path program 1 times [2020-07-01 12:44:46,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:46,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368316613] [2020-07-01 12:44:46,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:46,126 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:46,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:46,126 INFO L82 PathProgramCache]: Analyzing trace with hash 71642, now seen corresponding path program 1 times [2020-07-01 12:44:46,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:46,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118029232] [2020-07-01 12:44:46,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:46,137 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:46,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:46,137 INFO L82 PathProgramCache]: Analyzing trace with hash 61024028, now seen corresponding path program 2 times [2020-07-01 12:44:46,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:46,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166015949] [2020-07-01 12:44:46,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:46,149 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:46,187 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:46,188 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:46,188 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:46,188 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:46,188 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:44:46,188 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:46,188 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:46,188 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:46,188 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 12:44:46,188 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:46,189 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:46,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:46,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:46,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:46,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:46,254 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:46,254 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:46,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:46,257 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:46,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:44:46,260 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:46,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:46,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:46,296 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:44:46,297 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:46,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:46,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:46,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:44:46,333 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:46,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:46,364 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:46,401 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:44:46,401 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:58,465 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-07-01 12:44:58,470 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:58,470 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:58,470 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:58,470 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:58,471 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:44:58,471 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:58,471 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:58,471 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:58,471 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 12:44:58,471 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:58,471 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:58,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:58,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:58,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:58,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:58,539 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:58,540 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:58,542 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:58,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:58,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:44:58,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:58,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:58,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:58,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:44:58,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:44:58,547 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:58,579 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:58,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:58,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:44:58,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:58,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:58,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:58,582 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:44:58,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:44:58,586 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:44:58,591 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:44:58,591 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:58,593 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:44:58,594 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:44:58,594 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:44:58,594 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:44:58,623 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:44:58,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:58,637 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:44:58,638 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:58,642 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:44:58,643 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:44:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:58,661 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:44:58,662 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:58,698 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-07-01 12:44:58,698 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-07-01 12:44:58,698 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 24 states and 43 transitions. cyclomatic complexity: 21 Second operand 4 states. [2020-07-01 12:44:58,803 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 24 states and 43 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 107 states and 184 transitions. Complement of second has 21 states. [2020-07-01 12:44:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 2 accepting loop states [2020-07-01 12:44:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:44:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 22 transitions. [2020-07-01 12:44:58,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-01 12:44:58,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:58,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-01 12:44:58,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:58,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-01 12:44:58,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:44:58,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 184 transitions. [2020-07-01 12:44:58,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2020-07-01 12:44:58,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 50 states and 82 transitions. [2020-07-01 12:44:58,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 12:44:58,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-07-01 12:44:58,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 82 transitions. [2020-07-01 12:44:58,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:44:58,812 INFO L688 BuchiCegarLoop]: Abstraction has 50 states and 82 transitions. [2020-07-01 12:44:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 82 transitions. [2020-07-01 12:44:58,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 25. [2020-07-01 12:44:58,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-01 12:44:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 46 transitions. [2020-07-01 12:44:58,816 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 46 transitions. [2020-07-01 12:44:58,816 INFO L591 BuchiCegarLoop]: Abstraction has 25 states and 46 transitions. [2020-07-01 12:44:58,816 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 12:44:58,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 46 transitions. [2020-07-01 12:44:58,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2020-07-01 12:44:58,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:44:58,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:44:58,817 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 12:44:58,817 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-07-01 12:44:58,818 INFO L794 eck$LassoCheckResult]: Stem: 576#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 570#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 571#L22 [42] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 581#L22-2 [40] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 582#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 593#L22 [2020-07-01 12:44:58,818 INFO L796 eck$LassoCheckResult]: Loop: 593#L22 [35] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 592#L22-2 [47] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 574#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 571#L22 [35] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 581#L22-2 [40] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 582#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 593#L22 [2020-07-01 12:44:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:58,818 INFO L82 PathProgramCache]: Analyzing trace with hash 61023811, now seen corresponding path program 1 times [2020-07-01 12:44:58,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:58,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92384203] [2020-07-01 12:44:58,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:58,830 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:58,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:58,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1933917672, now seen corresponding path program 1 times [2020-07-01 12:44:58,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:58,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915587651] [2020-07-01 12:44:58,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:44:58,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915587651] [2020-07-01 12:44:58,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:44:58,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 12:44:58,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347612272] [2020-07-01 12:44:58,860 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 12:44:58,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:44:58,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 12:44:58,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-01 12:44:58,860 INFO L87 Difference]: Start difference. First operand 25 states and 46 transitions. cyclomatic complexity: 23 Second operand 5 states. [2020-07-01 12:44:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:44:58,940 INFO L93 Difference]: Finished difference Result 38 states and 59 transitions. [2020-07-01 12:44:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-01 12:44:58,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 59 transitions. [2020-07-01 12:44:58,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2020-07-01 12:44:58,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 37 states and 57 transitions. [2020-07-01 12:44:58,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 12:44:58,944 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-07-01 12:44:58,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 57 transitions. [2020-07-01 12:44:58,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:44:58,944 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-07-01 12:44:58,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 57 transitions. [2020-07-01 12:44:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 20. [2020-07-01 12:44:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-01 12:44:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2020-07-01 12:44:58,947 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 34 transitions. [2020-07-01 12:44:58,947 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 34 transitions. [2020-07-01 12:44:58,947 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 12:44:58,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 34 transitions. [2020-07-01 12:44:58,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2020-07-01 12:44:58,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:44:58,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:44:58,949 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 12:44:58,949 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2020-07-01 12:44:58,949 INFO L794 eck$LassoCheckResult]: Stem: 651#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 652#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 659#L22 [35] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 657#L22-2 [46] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 645#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 646#L22 [2020-07-01 12:44:58,949 INFO L796 eck$LassoCheckResult]: Loop: 646#L22 [42] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 654#L22-2 [40] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 655#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 661#L22 [35] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 653#L22-2 [46] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 656#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 646#L22 [2020-07-01 12:44:58,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:58,950 INFO L82 PathProgramCache]: Analyzing trace with hash 61017270, now seen corresponding path program 1 times [2020-07-01 12:44:58,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:58,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595875155] [2020-07-01 12:44:58,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:58,961 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:58,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2127857268, now seen corresponding path program 1 times [2020-07-01 12:44:58,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:58,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954901447] [2020-07-01 12:44:58,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:58,975 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:58,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:58,976 INFO L82 PathProgramCache]: Analyzing trace with hash 767981417, now seen corresponding path program 1 times [2020-07-01 12:44:58,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:44:58,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562274578] [2020-07-01 12:44:58,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:44:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:58,997 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:44:59,072 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:59,073 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:59,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:59,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:59,073 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:44:59,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:59,073 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:59,073 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:59,073 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 12:44:59,073 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:59,074 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:59,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:59,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:59,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:59,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:59,165 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:59,165 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:59,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:44:59,172 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:44:59,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:44:59,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:44:59,518 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:44:59,520 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:44:59,520 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:44:59,520 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:44:59,521 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:44:59,521 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:44:59,521 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:59,521 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:44:59,521 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:44:59,521 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 12:44:59,521 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:44:59,521 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:44:59,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:59,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:59,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:59,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:44:59,622 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:44:59,623 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:59,627 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:44:59,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:44:59,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:44:59,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:44:59,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:44:59,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:44:59,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:44:59,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:44:59,635 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:44:59,639 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:44:59,639 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:44:59,643 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:44:59,644 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:44:59,644 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:44:59,644 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 12:44:59,673 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:44:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:44:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:59,689 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:44:59,690 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:59,696 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 12:44:59,697 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:44:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:59,732 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 12:44:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:59,738 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 12:44:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:44:59,743 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 12:44:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:44:59,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 12:44:59,750 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:44:59,805 INFO L98 LoopCannibalizer]: 5 predicates before loop cannibalization 7 predicates after loop cannibalization [2020-07-01 12:44:59,806 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2020-07-01 12:44:59,806 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 20 states and 34 transitions. cyclomatic complexity: 15 Second operand 6 states. [2020-07-01 12:45:00,047 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 20 states and 34 transitions. cyclomatic complexity: 15. Second operand 6 states. Result 107 states and 183 transitions. Complement of second has 30 states. [2020-07-01 12:45:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 1 stem states 8 non-accepting loop states 2 accepting loop states [2020-07-01 12:45:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 12:45:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 26 transitions. [2020-07-01 12:45:00,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 26 transitions. Stem has 5 letters. Loop has 6 letters. [2020-07-01 12:45:00,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:45:00,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 26 transitions. Stem has 11 letters. Loop has 6 letters. [2020-07-01 12:45:00,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:45:00,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 26 transitions. Stem has 5 letters. Loop has 12 letters. [2020-07-01 12:45:00,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:45:00,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 183 transitions. [2020-07-01 12:45:00,055 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2020-07-01 12:45:00,057 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 85 states and 142 transitions. [2020-07-01 12:45:00,057 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-07-01 12:45:00,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2020-07-01 12:45:00,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 142 transitions. [2020-07-01 12:45:00,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:45:00,057 INFO L688 BuchiCegarLoop]: Abstraction has 85 states and 142 transitions. [2020-07-01 12:45:00,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 142 transitions. [2020-07-01 12:45:00,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 50. [2020-07-01 12:45:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-01 12:45:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 95 transitions. [2020-07-01 12:45:00,062 INFO L711 BuchiCegarLoop]: Abstraction has 50 states and 95 transitions. [2020-07-01 12:45:00,062 INFO L591 BuchiCegarLoop]: Abstraction has 50 states and 95 transitions. [2020-07-01 12:45:00,062 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 12:45:00,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 95 transitions. [2020-07-01 12:45:00,064 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2020-07-01 12:45:00,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:45:00,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:45:00,064 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 12:45:00,064 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-07-01 12:45:00,065 INFO L794 eck$LassoCheckResult]: Stem: 895#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 889#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 891#L22 [42] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 899#L22-2 [40] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 933#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 935#L22 [2020-07-01 12:45:00,065 INFO L796 eck$LassoCheckResult]: Loop: 935#L22 [42] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 910#L22-2 [47] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 937#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 898#L22 [42] L22-->L22-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 899#L22-2 [40] L22-2-->L27-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 933#L27-1 [32] L27-1-->L22: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 935#L22 [2020-07-01 12:45:00,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:45:00,065 INFO L82 PathProgramCache]: Analyzing trace with hash 61023811, now seen corresponding path program 2 times [2020-07-01 12:45:00,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:45:00,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879154121] [2020-07-01 12:45:00,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:45:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:45:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:45:00,076 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:45:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:45:00,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2134328456, now seen corresponding path program 1 times [2020-07-01 12:45:00,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:45:00,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113802898] [2020-07-01 12:45:00,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:45:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:45:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:45:00,088 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:45:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:45:00,089 INFO L82 PathProgramCache]: Analyzing trace with hash -859754166, now seen corresponding path program 1 times [2020-07-01 12:45:00,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:45:00,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998931694] [2020-07-01 12:45:00,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:45:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:45:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 12:45:00,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998931694] [2020-07-01 12:45:00,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869119724] [2020-07-01 12:45:00,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:45:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:45:00,139 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 12:45:00,140 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:45:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 12:45:00,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-01 12:45:00,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-07-01 12:45:00,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797493200] [2020-07-01 12:45:00,245 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:45:00,245 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:45:00,246 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:45:00,246 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:45:00,246 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:45:00,246 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:45:00,246 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:45:00,246 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:45:00,246 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 12:45:00,246 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:45:00,246 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:45:00,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:45:00,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:45:00,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:45:00,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:45:00,312 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:45:00,312 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:45:00,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:45:00,320 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:45:00,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:45:00,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:45:00,849 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:45:00,852 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:45:00,852 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:45:00,852 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:45:00,853 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:45:00,853 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:45:00,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:45:00,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:45:00,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:45:00,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 12:45:00,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:45:00,853 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:45:00,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:45:00,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:45:00,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:45:00,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:45:00,922 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:45:00,922 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:45:00,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:45:00,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:45:00,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:45:00,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:45:00,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:45:00,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:45:00,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:45:00,929 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:45:00,932 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:45:00,936 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:45:00,936 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:45:00,939 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:45:00,939 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:45:00,939 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:45:00,939 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 12:45:00,968 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:45:00,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:45:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:45:00,983 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:45:00,984 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:45:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:45:00,990 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-01 12:45:00,990 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:45:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:45:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:45:01,026 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 12:45:01,027 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:45:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:45:01,168 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 12:45:01,169 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:45:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:45:01,196 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 12:45:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:45:01,204 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-01 12:45:01,204 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:45:01,264 INFO L98 LoopCannibalizer]: 5 predicates before loop cannibalization 13 predicates after loop cannibalization [2020-07-01 12:45:01,265 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 13 loop predicates [2020-07-01 12:45:01,265 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 50 states and 95 transitions. cyclomatic complexity: 48 Second operand 6 states. [2020-07-01 12:45:01,863 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 50 states and 95 transitions. cyclomatic complexity: 48. Second operand 6 states. Result 411 states and 745 transitions. Complement of second has 54 states. [2020-07-01 12:45:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 9 non-accepting loop states 3 accepting loop states [2020-07-01 12:45:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 12:45:01,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 37 transitions. [2020-07-01 12:45:01,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 37 transitions. Stem has 5 letters. Loop has 6 letters. [2020-07-01 12:45:01,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:45:01,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 37 transitions. Stem has 11 letters. Loop has 6 letters. [2020-07-01 12:45:01,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:45:01,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 37 transitions. Stem has 5 letters. Loop has 12 letters. [2020-07-01 12:45:01,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:45:01,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 411 states and 745 transitions. [2020-07-01 12:45:01,875 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:45:01,876 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 411 states to 0 states and 0 transitions. [2020-07-01 12:45:01,876 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:45:01,876 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:45:01,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:45:01,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:45:01,876 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:45:01,876 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:45:01,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:45:01,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 12:45:01,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-01 12:45:01,877 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-07-01 12:45:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:45:01,878 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-01 12:45:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-01 12:45:01,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-01 12:45:01,879 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:45:01,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 12:45:01,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:45:01,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:45:01,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:45:01,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:45:01,880 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:45:01,880 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:45:01,880 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:45:01,880 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2020-07-01 12:45:01,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:45:01,880 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:45:01,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:45:01,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:45:01 BasicIcfg [2020-07-01 12:45:01,887 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:45:01,889 INFO L168 Benchmark]: Toolchain (without parser) took 23762.66 ms. Allocated memory was 649.6 MB in the beginning and 776.5 MB in the end (delta: 126.9 MB). Free memory was 562.7 MB in the beginning and 385.8 MB in the end (delta: 176.8 MB). Peak memory consumption was 303.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:45:01,890 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:45:01,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.13 ms. Allocated memory was 649.6 MB in the beginning and 684.7 MB in the end (delta: 35.1 MB). Free memory was 562.7 MB in the beginning and 649.2 MB in the end (delta: -86.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:45:01,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.20 ms. Allocated memory is still 684.7 MB. Free memory was 649.2 MB in the beginning and 647.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:45:01,892 INFO L168 Benchmark]: Boogie Preprocessor took 19.90 ms. Allocated memory is still 684.7 MB. Free memory was 647.9 MB in the beginning and 646.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:45:01,892 INFO L168 Benchmark]: RCFGBuilder took 251.92 ms. Allocated memory is still 684.7 MB. Free memory was 646.5 MB in the beginning and 629.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 50.3 GB. [2020-07-01 12:45:01,892 INFO L168 Benchmark]: BlockEncodingV2 took 71.56 ms. Allocated memory is still 684.7 MB. Free memory was 629.7 MB in the beginning and 625.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. [2020-07-01 12:45:01,893 INFO L168 Benchmark]: TraceAbstraction took 144.27 ms. Allocated memory is still 684.7 MB. Free memory was 624.3 MB in the beginning and 616.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:45:01,893 INFO L168 Benchmark]: BuchiAutomizer took 22930.42 ms. Allocated memory was 684.7 MB in the beginning and 776.5 MB in the end (delta: 91.8 MB). Free memory was 616.2 MB in the beginning and 385.8 MB in the end (delta: 230.4 MB). Peak memory consumption was 322.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:45:01,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 4 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 303.13 ms. Allocated memory was 649.6 MB in the beginning and 684.7 MB in the end (delta: 35.1 MB). Free memory was 562.7 MB in the beginning and 649.2 MB in the end (delta: -86.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.20 ms. Allocated memory is still 684.7 MB. Free memory was 649.2 MB in the beginning and 647.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.90 ms. Allocated memory is still 684.7 MB. Free memory was 647.9 MB in the beginning and 646.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 251.92 ms. Allocated memory is still 684.7 MB. Free memory was 646.5 MB in the beginning and 629.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.56 ms. Allocated memory is still 684.7 MB. Free memory was 629.7 MB in the beginning and 625.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 50.3 GB. * TraceAbstraction took 144.27 ms. Allocated memory is still 684.7 MB. Free memory was 624.3 MB in the beginning and 616.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 22930.42 ms. Allocated memory was 684.7 MB in the beginning and 776.5 MB in the end (delta: 91.8 MB). Free memory was 616.2 MB in the beginning and 385.8 MB in the end (delta: 230.4 MB). Peak memory consumption was 322.1 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 9 terminating modules (3 trivial, 0 deterministic, 6 nondeterministic). One nondeterministic module has affine ranking function y and consists of 6 locations. One nondeterministic module has affine ranking function y and consists of 6 locations. One nondeterministic module has affine ranking function x and consists of 6 locations. One nondeterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 11 locations. One nondeterministic module has affine ranking function y and consists of 14 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 22.8s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 20.5s. Construction of modules took 0.3s. Büchi inclusion checks took 1.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 120 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 50 states and ocurred in iteration 6. Nontrivial modules had stage [6, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/6 HoareTripleCheckerStatistics: 35 SDtfs, 124 SDslu, 4 SDs, 0 SdLazy, 436 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital27 mio100 ax143 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf93 smp100 dnf100 smp100 tf104 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 17.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:44:34.854 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_Xo7eku/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:45:02.944 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check