/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 12:20:52,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:20:52,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:20:52,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:20:52,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:20:52,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:20:52,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:20:52,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:20:52,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:20:52,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:20:52,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:20:52,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:20:52,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:20:52,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:20:52,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:20:52,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:20:52,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:20:52,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:20:52,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:20:52,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:20:52,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:20:52,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:20:52,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:20:52,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:20:52,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:20:52,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:20:52,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:20:52,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:20:52,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:20:52,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:20:52,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:20:52,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:20:52,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:20:52,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:20:52,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:20:52,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:20:52,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:20:52,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:20:52,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:20:52,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:20:52,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:20:52,086 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:20:52,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:20:52,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:20:52,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:20:52,102 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:20:52,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:20:52,102 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:20:52,102 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:20:52,103 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:20:52,103 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:20:52,103 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:20:52,103 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:20:52,103 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:20:52,103 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:20:52,104 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:20:52,104 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:52,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:20:52,104 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:20:52,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:20:52,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:20:52,105 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:20:52,105 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:20:52,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:20:52,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:20:52,105 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:20:52,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:20:52,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:20:52,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:20:52,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:20:52,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:20:52,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:20:52,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:20:52,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:20:52,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:20:52,294 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:20:52,295 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:20:52,363 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_TSkgQ7/tmp/54057940515d425ab409694fab189ea3/FLAGd3f46a890 [2020-07-01 12:20:52,690 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:20:52,691 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:20:52,697 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_TSkgQ7/tmp/54057940515d425ab409694fab189ea3/FLAGd3f46a890 [2020-07-01 12:20:53,097 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_TSkgQ7/tmp/54057940515d425ab409694fab189ea3 [2020-07-01 12:20:53,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:20:53,109 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:20:53,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:20:53,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:20:53,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:20:53,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36967467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53, skipping insertion in model container [2020-07-01 12:20:53,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:20:53,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:20:53,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:20:53,370 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:20:53,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:20:53,402 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:20:53,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53 WrapperNode [2020-07-01 12:20:53,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:20:53,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:20:53,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:20:53,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:20:53,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:20:53,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:20:53,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:20:53,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:20:53,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:20:53,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:20:53,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:20:53,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:20:53,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (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 12:20:53,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:20:53,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:20:53,695 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:20:53,695 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-01 12:20:53,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:20:53 BoogieIcfgContainer [2020-07-01 12:20:53,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:20:53,699 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:20:53,699 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:20:53,701 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:20:53,702 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:20:53" (1/1) ... [2020-07-01 12:20:53,715 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 13 edges [2020-07-01 12:20:53,716 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:20:53,717 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:20:53,717 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:20:53,718 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:20:53,719 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:20:53,720 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:20:53,720 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:20:53,735 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:20:53,749 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 12:20:53,754 INFO L70 emoveInfeasibleEdges]: Removed 3 edges and 0 locations because of local infeasibility [2020-07-01 12:20:53,755 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:20:53,770 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 12:20:53,772 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 12:20:53,773 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:20:53,773 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:20:53,773 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:20:53,774 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:20:53,774 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 8 edges [2020-07-01 12:20:53,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:20:53 BasicIcfg [2020-07-01 12:20:53,775 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:20:53,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:20:53,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:20:53,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:20:53,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:20:53" (1/4) ... [2020-07-01 12:20:53,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63965401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:20:53, skipping insertion in model container [2020-07-01 12:20:53,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (2/4) ... [2020-07-01 12:20:53,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63965401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:20:53, skipping insertion in model container [2020-07-01 12:20:53,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:20:53" (3/4) ... [2020-07-01 12:20:53,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63965401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:20:53, skipping insertion in model container [2020-07-01 12:20:53,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:20:53" (4/4) ... [2020-07-01 12:20:53,783 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:20:53,795 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:20:53,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:20:53,817 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:20:53,841 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:20:53,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:20:53,842 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:20:53,842 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:20:53,842 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:20:53,842 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:20:53,842 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:20:53,842 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:20:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 12:20:53,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:20:53,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 12:20:53,923 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:20:53,923 INFO L271 CegarLoopResult]: At program point L13-2(lines 13 16) the Hoare annotation is: true [2020-07-01 12:20:53,923 INFO L271 CegarLoopResult]: At program point L21-2(lines 21 24) the Hoare annotation is: true [2020-07-01 12:20:53,924 INFO L268 CegarLoopResult]: For program point L21-3(lines 5 28) no Hoare annotation was computed. [2020-07-01 12:20:53,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:20:53 BasicIcfg [2020-07-01 12:20:53,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:20:53,933 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:20:53,933 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:20:53,937 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:20:53,937 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:20:53,938 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:20:53" (1/5) ... [2020-07-01 12:20:53,938 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a1a15cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:20:53, skipping insertion in model container [2020-07-01 12:20:53,938 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:20:53,939 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:20:53" (2/5) ... [2020-07-01 12:20:53,939 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a1a15cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:20:53, skipping insertion in model container [2020-07-01 12:20:53,939 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:20:53,939 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:20:53" (3/5) ... [2020-07-01 12:20:53,940 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a1a15cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:20:53, skipping insertion in model container [2020-07-01 12:20:53,940 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:20:53,940 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:20:53" (4/5) ... [2020-07-01 12:20:53,940 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a1a15cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:20:53, skipping insertion in model container [2020-07-01 12:20:53,940 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:20:53,941 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:20:53" (5/5) ... [2020-07-01 12:20:53,942 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:20:53,969 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:20:53,970 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:20:53,970 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:20:53,970 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:20:53,970 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:20:53,970 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:20:53,970 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:20:53,970 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:20:53,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 12:20:53,990 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-07-01 12:20:53,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:20:53,991 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:20:53,996 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:20:53,996 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:20:53,996 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:20:53,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 12:20:53,997 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-07-01 12:20:53,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:20:53,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:20:53,997 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:20:53,997 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 12:20:54,002 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [41] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~res~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~res~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L13-2true [2020-07-01 12:20:54,003 INFO L796 eck$LassoCheckResult]: Loop: 4#L13-2true [44] L13-2-->L13-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_8) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_8 (- 1))) (= v_ULTIMATE.start_main_~y~0_7 (+ v_ULTIMATE.start_main_~y~0_8 (- 1))) (< 0 v_ULTIMATE.start_main_~x~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L13-2true [2020-07-01 12:20:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:54,009 INFO L82 PathProgramCache]: Analyzing trace with hash 72, now seen corresponding path program 1 times [2020-07-01 12:20:54,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:54,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400012720] [2020-07-01 12:20:54,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,088 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:20:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:54,090 INFO L82 PathProgramCache]: Analyzing trace with hash 75, now seen corresponding path program 1 times [2020-07-01 12:20:54,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:54,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125179727] [2020-07-01 12:20:54,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,103 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:20:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:54,105 INFO L82 PathProgramCache]: Analyzing trace with hash 2276, now seen corresponding path program 1 times [2020-07-01 12:20:54,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:54,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281363000] [2020-07-01 12:20:54,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,120 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:20:54,168 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:20:54,169 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:20:54,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:20:54,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:20:54,169 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:20:54,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:54,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:20:54,170 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:20:54,170 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:20:54,170 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:20:54,170 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:20:54,190 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 12:20:54,202 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 12:20:54,208 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 12:20:54,218 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 12:20:54,318 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:20:54,319 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 12:20:54,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:54,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:54,336 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:20:54,336 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 12:20:54,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:54,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:54,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:20:54,375 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 12:20:54,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:54,408 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 12:20:54,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:20:54,462 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:54,500 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:20:54,502 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:20:54,502 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:20:54,502 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:20:54,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:20:54,503 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:20:54,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:54,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:20:54,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:20:54,503 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:20:54,503 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:20:54,503 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:20:54,505 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 12:20:54,510 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 12:20:54,514 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 12:20:54,521 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 12:20:54,591 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:20:54,597 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 12:20:54,602 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 12:20:54,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:54,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:54,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:54,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:54,611 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:20:54,612 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:20:54,619 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 12:20:54,652 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 12:20:54,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:54,654 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:54,654 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:54,654 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:54,658 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:20:54,658 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:20:54,664 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 12:20:54,696 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 12:20:54,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:54,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:20:54,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:54,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:54,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:54,701 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:20:54,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:20:54,704 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:20:54,710 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:20:54,710 INFO L444 ModelExtractionUtils]: 0 out of 3 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 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 12:20:54,720 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:20:54,720 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:20:54,720 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:20:54,721 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 12:20:54,755 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:20:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:54,791 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:20:54,792 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:20:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:54,803 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:20:54,804 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:20:54,804 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 12:20:54,817 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 12:20:54,822 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 1 loop predicates [2020-07-01 12:20:54,823 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 2 states. [2020-07-01 12:20:54,866 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 2 states. Result 9 states and 24 transitions. Complement of second has 4 states. [2020-07-01 12:20:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 12:20:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 12:20:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 19 transitions. [2020-07-01 12:20:54,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 1 letters. Loop has 1 letters. [2020-07-01 12:20:54,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:54,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 12:20:54,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:54,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 12:20:54,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:54,880 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 24 transitions. [2020-07-01 12:20:54,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:20:54,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 24 transitions. [2020-07-01 12:20:54,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 12:20:54,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 12:20:54,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 24 transitions. [2020-07-01 12:20:54,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:20:54,888 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 24 transitions. [2020-07-01 12:20:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 24 transitions. [2020-07-01 12:20:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-07-01 12:20:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 12:20:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-07-01 12:20:54,917 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 23 transitions. [2020-07-01 12:20:54,917 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 23 transitions. [2020-07-01 12:20:54,917 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:20:54,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 23 transitions. [2020-07-01 12:20:54,918 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:20:54,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:20:54,919 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:20:54,919 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:20:54,919 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:20:54,920 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~res~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~res~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 42#L13-2 [58] L13-2-->L21-3: Formula: (>= 0 v_ULTIMATE.start_main_~x~0_6) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[] 44#L21-3 [2020-07-01 12:20:54,920 INFO L796 eck$LassoCheckResult]: Loop: 44#L21-3 [49] L21-3-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1)) (< 0 v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~res~0_6 (+ v_ULTIMATE.start_main_~res~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~y~0] 46#L21-2 [59] L21-2-->L21-3: Formula: (>= 0 v_ULTIMATE.start_main_~y~0_11) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} AuxVars[] AssignedVars[] 44#L21-3 [2020-07-01 12:20:54,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:54,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2290, now seen corresponding path program 1 times [2020-07-01 12:20:54,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:54,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149552283] [2020-07-01 12:20:54,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,928 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:20:54,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:54,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2539, now seen corresponding path program 1 times [2020-07-01 12:20:54,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:54,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061232628] [2020-07-01 12:20:54,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:54,940 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:20:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:54,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2202268, now seen corresponding path program 1 times [2020-07-01 12:20:54,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:54,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026384173] [2020-07-01 12:20:54,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:54,974 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 12:20:54,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026384173] [2020-07-01 12:20:54,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:20:54,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:20:54,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772877669] [2020-07-01 12:20:54,998 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:20:54,998 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:20:54,998 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:20:54,998 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:20:54,998 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:20:54,998 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:54,998 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:20:54,999 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:20:54,999 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:20:54,999 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:20:54,999 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:20:55,001 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 12:20:55,004 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 12:20:55,010 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 12:20:55,019 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 12:20:55,023 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 12:20:55,090 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:20:55,090 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:55,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:55,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:55,104 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:20:55,104 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 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:55,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:55,141 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 12:20:55,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:20:55,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:55,283 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:20:55,285 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:20:55,285 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:20:55,285 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:20:55,285 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:20:55,286 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:20:55,286 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:55,286 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:20:55,286 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:20:55,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:20:55,287 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:20:55,287 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:20:55,288 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 12:20:55,293 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 12:20:55,301 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 12:20:55,305 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 12:20:55,310 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 12:20:55,371 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:20:55,371 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:55,374 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 12:20:55,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:55,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:55,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:55,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:55,380 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:20:55,381 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:20:55,385 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 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:55,420 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 12:20:55,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:55,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:20:55,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:55,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:55,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:55,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:20:55,425 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:20:55,428 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:20:55,435 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:20:55,436 INFO L444 ModelExtractionUtils]: 0 out of 3 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 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:55,443 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:20:55,443 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:20:55,443 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:20:55,443 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 12:20:55,476 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:20:55,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:55,504 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:20:55,504 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:20:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:55,511 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:20:55,512 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:20:55,542 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 12:20:55,543 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 12:20:55,543 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 2 loop predicates [2020-07-01 12:20:55,543 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 23 transitions. cyclomatic complexity: 18 Second operand 3 states. [2020-07-01 12:20:55,587 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 23 transitions. cyclomatic complexity: 18. Second operand 3 states. Result 26 states and 55 transitions. Complement of second has 6 states. [2020-07-01 12:20:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 12:20:55,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:20:55,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-07-01 12:20:55,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 12:20:55,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:55,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 12:20:55,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:55,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 12:20:55,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:55,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 55 transitions. [2020-07-01 12:20:55,594 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-07-01 12:20:55,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 55 transitions. [2020-07-01 12:20:55,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-07-01 12:20:55,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-07-01 12:20:55,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 55 transitions. [2020-07-01 12:20:55,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:20:55,597 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 55 transitions. [2020-07-01 12:20:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 55 transitions. [2020-07-01 12:20:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-07-01 12:20:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-01 12:20:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 51 transitions. [2020-07-01 12:20:55,601 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 51 transitions. [2020-07-01 12:20:55,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:20:55,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:20:55,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:20:55,604 INFO L87 Difference]: Start difference. First operand 22 states and 51 transitions. Second operand 3 states. [2020-07-01 12:20:55,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:20:55,624 INFO L93 Difference]: Finished difference Result 12 states and 23 transitions. [2020-07-01 12:20:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:20:55,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 23 transitions. [2020-07-01 12:20:55,627 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:20:55,628 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 15 transitions. [2020-07-01 12:20:55,628 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 12:20:55,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 12:20:55,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 15 transitions. [2020-07-01 12:20:55,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:20:55,629 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2020-07-01 12:20:55,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 15 transitions. [2020-07-01 12:20:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-07-01 12:20:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 12:20:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2020-07-01 12:20:55,631 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2020-07-01 12:20:55,631 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2020-07-01 12:20:55,631 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:20:55,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 15 transitions. [2020-07-01 12:20:55,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:20:55,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:20:55,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:20:55,632 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:20:55,632 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:20:55,632 INFO L794 eck$LassoCheckResult]: Stem: 145#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~res~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~res~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 146#L13-2 [57] L13-2-->L21-3: Formula: (>= 0 v_ULTIMATE.start_main_~y~0_6) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6} AuxVars[] AssignedVars[] 148#L21-3 [2020-07-01 12:20:55,633 INFO L796 eck$LassoCheckResult]: Loop: 148#L21-3 [49] L21-3-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1)) (< 0 v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~res~0_6 (+ v_ULTIMATE.start_main_~res~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~y~0] 150#L21-2 [59] L21-2-->L21-3: Formula: (>= 0 v_ULTIMATE.start_main_~y~0_11) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} AuxVars[] AssignedVars[] 148#L21-3 [2020-07-01 12:20:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:55,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2289, now seen corresponding path program 1 times [2020-07-01 12:20:55,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:55,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761948784] [2020-07-01 12:20:55,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:55,641 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:20:55,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:55,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2539, now seen corresponding path program 2 times [2020-07-01 12:20:55,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:55,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924224371] [2020-07-01 12:20:55,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:55,650 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:20:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:55,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2201307, now seen corresponding path program 1 times [2020-07-01 12:20:55,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:55,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486774398] [2020-07-01 12:20:55,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:55,664 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:20:55,692 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:20:55,692 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:20:55,692 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:20:55,692 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:20:55,692 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:20:55,692 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:55,693 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:20:55,693 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:20:55,693 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:20:55,693 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:20:55,693 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:20:55,695 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 12:20:55,698 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 12:20:55,701 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 12:20:55,707 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 12:20:55,711 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 12:20:55,777 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:20:55,777 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:55,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:55,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:55,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:20:55,787 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 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:55,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:55,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:55,825 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:20:55,825 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:55,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:55,858 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:55,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:20:55,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:55,988 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:20:55,990 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:20:55,991 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:20:55,991 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:20:55,991 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:20:55,991 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:20:55,992 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:55,992 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:20:55,992 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:20:55,992 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:20:55,992 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:20:55,992 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:20:55,994 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 12:20:55,997 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 12:20:56,004 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 12:20:56,010 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 12:20:56,017 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 12:20:56,089 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:20:56,089 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:56,095 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 12:20:56,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:56,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:20:56,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:56,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:56,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:56,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:20:56,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:20:56,105 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 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:56,138 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 12:20:56,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:56,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:56,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:56,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:56,143 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:20:56,143 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:20:56,151 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 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:56,184 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 12:20:56,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:56,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:20:56,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:56,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:56,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:56,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:20:56,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:20:56,190 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:20:56,194 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:20:56,194 INFO L444 ModelExtractionUtils]: 0 out of 3 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 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:56,199 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:20:56,199 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:20:56,199 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:20:56,199 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 12:20:56,229 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:20:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:56,250 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:20:56,250 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:20:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:56,254 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:20:56,254 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:20:56,277 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 12:20:56,278 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 12:20:56,278 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 2 loop predicates [2020-07-01 12:20:56,278 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 15 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-07-01 12:20:56,304 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 15 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 6 states. [2020-07-01 12:20:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 12:20:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:20:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-01 12:20:56,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 12:20:56,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:56,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 12:20:56,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:56,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 12:20:56,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:56,307 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2020-07-01 12:20:56,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:20:56,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 23 transitions. [2020-07-01 12:20:56,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 12:20:56,309 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 12:20:56,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 23 transitions. [2020-07-01 12:20:56,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:20:56,309 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-07-01 12:20:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 23 transitions. [2020-07-01 12:20:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-01 12:20:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-01 12:20:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2020-07-01 12:20:56,311 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-07-01 12:20:56,311 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-07-01 12:20:56,311 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 12:20:56,311 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2020-07-01 12:20:56,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:20:56,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:20:56,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:20:56,313 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-07-01 12:20:56,313 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:20:56,313 INFO L794 eck$LassoCheckResult]: Stem: 210#ULTIMATE.startENTRY [41] ULTIMATE.startENTRY-->L13-2: 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|) (= v_ULTIMATE.start_main_~res~0_1 0)) 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_~res~0=v_ULTIMATE.start_main_~res~0_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_~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_~res~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 211#L13-2 [57] L13-2-->L21-3: Formula: (>= 0 v_ULTIMATE.start_main_~y~0_6) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6} AuxVars[] AssignedVars[] 212#L21-3 [49] L21-3-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1)) (< 0 v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~res~0_6 (+ v_ULTIMATE.start_main_~res~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~y~0] 224#L21-2 [52] L21-2-->L21-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_13) (< 0 v_ULTIMATE.start_main_~x~0_13) (= v_ULTIMATE.start_main_~x~0_12 (+ v_ULTIMATE.start_main_~x~0_13 (- 1))) (= v_ULTIMATE.start_main_~y~0_12 (+ v_ULTIMATE.start_main_~y~0_13 (- 1)))) 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_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 221#L21-2 [52] L21-2-->L21-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_13) (< 0 v_ULTIMATE.start_main_~x~0_13) (= v_ULTIMATE.start_main_~x~0_12 (+ v_ULTIMATE.start_main_~x~0_13 (- 1))) (= v_ULTIMATE.start_main_~y~0_12 (+ v_ULTIMATE.start_main_~y~0_13 (- 1)))) 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_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 219#L21-2 [59] L21-2-->L21-3: Formula: (>= 0 v_ULTIMATE.start_main_~y~0_11) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} AuxVars[] AssignedVars[] 214#L21-3 [2020-07-01 12:20:56,313 INFO L796 eck$LassoCheckResult]: Loop: 214#L21-3 [49] L21-3-->L21-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 1)) (< 0 v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~res~0_6 (+ v_ULTIMATE.start_main_~res~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~y~0] 215#L21-2 [59] L21-2-->L21-3: Formula: (>= 0 v_ULTIMATE.start_main_~y~0_11) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11} AuxVars[] AssignedVars[] 214#L21-3 [2020-07-01 12:20:56,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:56,314 INFO L82 PathProgramCache]: Analyzing trace with hash 2115450971, now seen corresponding path program 1 times [2020-07-01 12:20:56,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:56,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691579510] [2020-07-01 12:20:56,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:56,342 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 12:20:56,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691579510] [2020-07-01 12:20:56,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:20:56,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 12:20:56,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053505569] [2020-07-01 12:20:56,344 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 12:20:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:56,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2539, now seen corresponding path program 3 times [2020-07-01 12:20:56,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:20:56,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696616903] [2020-07-01 12:20:56,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:20:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:20:56,351 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:20:56,368 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:20:56,368 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:20:56,368 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:20:56,368 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:20:56,369 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:20:56,369 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:56,369 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:20:56,369 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:20:56,369 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 12:20:56,369 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:20:56,369 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:20:56,371 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 12:20:56,374 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 12:20:56,377 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 12:20:56,382 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 12:20:56,385 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 12:20:56,428 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:20:56,428 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:56,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:56,431 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:56,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:20:56,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:56,485 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:20:56,486 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=6}, {ULTIMATE.start_main_~res~0=1}, {ULTIMATE.start_main_~res~0=-6}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:56,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:56,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:56,521 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:20:56,521 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:20:56,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:20:56,553 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 12:20:56,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:20:56,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:20:56,681 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:20:56,683 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:20:56,683 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:20:56,683 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:20:56,683 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:20:56,683 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:20:56,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:56,684 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:20:56,684 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:20:56,684 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 12:20:56,684 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:20:56,684 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:20:56,686 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 12:20:56,689 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 12:20:56,692 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 12:20:56,698 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 12:20:56,701 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 12:20:56,748 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:20:56,748 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:56,751 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 12:20:56,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:56,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:20:56,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:56,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:56,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:56,755 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:20:56,755 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:20:56,758 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 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:56,790 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 12:20:56,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:56,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:20:56,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:56,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:56,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:56,793 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:20:56,793 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:20:56,795 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 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:56,827 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 12:20:56,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:20:56,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:20:56,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:20:56,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:20:56,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:20:56,831 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:20:56,831 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:20:56,834 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:20:56,837 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:20:56,837 INFO L444 ModelExtractionUtils]: 0 out of 3 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 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:20:56,839 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:20:56,840 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:20:56,840 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:20:56,840 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 12:20:56,869 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:20:56,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:20:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:56,887 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:20:56,888 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:20:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:20:56,892 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:20:56,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:20:56,902 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 12:20:56,902 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 12:20:56,903 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 2 loop predicates [2020-07-01 12:20:56,903 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 15 states and 23 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-07-01 12:20:56,929 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 15 states and 23 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 37 states and 57 transitions. Complement of second has 8 states. [2020-07-01 12:20:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 12:20:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:20:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-01 12:20:56,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 2 letters. [2020-07-01 12:20:56,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:56,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 2 letters. [2020-07-01 12:20:56,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:56,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 4 letters. [2020-07-01 12:20:56,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:20:56,932 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 57 transitions. [2020-07-01 12:20:56,934 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:20:56,934 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 0 states and 0 transitions. [2020-07-01 12:20:56,934 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:20:56,934 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:20:56,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:20:56,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:20:56,935 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:20:56,935 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:20:56,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:20:56,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:20:56,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:20:56,935 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-07-01 12:20:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:20:56,936 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-01 12:20:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-01 12:20:56,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-01 12:20:56,937 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:20:56,937 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 12:20:56,937 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:20:56,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:20:56,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:20:56,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:20:56,937 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:20:56,938 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:20:56,938 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:20:56,938 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 12:20:56,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:20:56,938 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:20:56,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:20:56,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:20:56 BasicIcfg [2020-07-01 12:20:56,944 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:20:56,946 INFO L168 Benchmark]: Toolchain (without parser) took 3836.49 ms. Allocated memory was 649.6 MB in the beginning and 760.7 MB in the end (delta: 111.1 MB). Free memory was 563.9 MB in the beginning and 602.2 MB in the end (delta: -38.3 MB). Peak memory consumption was 72.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:20:56,947 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:20:56,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.47 ms. Allocated memory was 649.6 MB in the beginning and 693.1 MB in the end (delta: 43.5 MB). Free memory was 563.9 MB in the beginning and 655.9 MB in the end (delta: -92.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:20:56,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.48 ms. Allocated memory is still 693.1 MB. Free memory was 655.9 MB in the beginning and 654.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:20:56,949 INFO L168 Benchmark]: Boogie Preprocessor took 20.86 ms. Allocated memory is still 693.1 MB. Free memory was 654.8 MB in the beginning and 653.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:20:56,949 INFO L168 Benchmark]: RCFGBuilder took 238.62 ms. Allocated memory is still 693.1 MB. Free memory was 653.7 MB in the beginning and 638.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:20:56,950 INFO L168 Benchmark]: BlockEncodingV2 took 75.75 ms. Allocated memory is still 693.1 MB. Free memory was 637.0 MB in the beginning and 632.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:20:56,950 INFO L168 Benchmark]: TraceAbstraction took 156.73 ms. Allocated memory is still 693.1 MB. Free memory was 631.6 MB in the beginning and 622.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:20:56,951 INFO L168 Benchmark]: BuchiAutomizer took 3010.79 ms. Allocated memory was 693.1 MB in the beginning and 760.7 MB in the end (delta: 67.6 MB). Free memory was 622.9 MB in the beginning and 602.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 88.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:20:56,955 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 13 edges - StatisticsResult: Encoded RCFG 4 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 292.47 ms. Allocated memory was 649.6 MB in the beginning and 693.1 MB in the end (delta: 43.5 MB). Free memory was 563.9 MB in the beginning and 655.9 MB in the end (delta: -92.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.48 ms. Allocated memory is still 693.1 MB. Free memory was 655.9 MB in the beginning and 654.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.86 ms. Allocated memory is still 693.1 MB. Free memory was 654.8 MB in the beginning and 653.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 238.62 ms. Allocated memory is still 693.1 MB. Free memory was 653.7 MB in the beginning and 638.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 75.75 ms. Allocated memory is still 693.1 MB. Free memory was 637.0 MB in the beginning and 632.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. * TraceAbstraction took 156.73 ms. Allocated memory is still 693.1 MB. Free memory was 631.6 MB in the beginning and 622.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 3010.79 ms. Allocated memory was 693.1 MB in the beginning and 760.7 MB in the end (delta: 67.6 MB). Free memory was 622.9 MB in the beginning and 602.2 MB in the end (delta: 20.8 MB). Peak memory consumption was 88.4 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: 13]: Loop Invariant Derived loop invariant: 1 - 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 0 deterministic, 4 nondeterministic). One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 38 SDslu, 6 SDs, 0 SdLazy, 66 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:20:49.862 ----------------------------------------------- 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_TSkgQ7/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:20:57.588 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check