/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 10:56:04,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:56:04,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:56:04,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:56:04,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:56:04,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:56:04,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:56:04,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:56:04,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:56:04,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:56:04,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:56:04,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:56:04,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:56:04,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:56:04,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:56:04,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:56:04,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:56:04,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:56:04,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:56:04,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:56:04,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:56:04,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:56:04,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:56:04,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:56:04,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:56:04,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:56:04,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:56:04,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:56:04,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:56:04,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:56:04,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:56:04,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:56:04,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:56:04,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:56:04,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:56:04,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:56:04,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:56:04,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:56:04,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:56:04,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:56:04,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:56:04,771 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 10:56:04,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:56:04,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:56:04,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:56:04,786 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:56:04,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:56:04,787 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:56:04,787 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:56:04,787 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:56:04,787 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:56:04,787 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:56:04,787 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:56:04,788 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:56:04,788 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:56:04,788 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:56:04,788 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:56:04,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:56:04,788 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:56:04,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:56:04,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:56:04,789 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:56:04,789 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:56:04,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:56:04,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:56:04,790 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:56:04,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:56:04,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:56:04,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:56:04,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:56:04,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:56:04,954 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:56:04,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:56:04,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:56:04,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:56:04,974 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:56:04,974 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:56:05,040 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_DSqmqp/tmp/54e09b9308c54aa7a2a7f318cef96818/FLAGb6b4dfb1b [2020-07-01 10:56:05,379 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:56:05,379 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 10:56:05,386 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_DSqmqp/tmp/54e09b9308c54aa7a2a7f318cef96818/FLAGb6b4dfb1b [2020-07-01 10:56:05,799 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_DSqmqp/tmp/54e09b9308c54aa7a2a7f318cef96818 [2020-07-01 10:56:05,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:56:05,812 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:56:05,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:56:05,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:56:05,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:56:05,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:56:05" (1/1) ... [2020-07-01 10:56:05,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496b959b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:05, skipping insertion in model container [2020-07-01 10:56:05,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:56:05" (1/1) ... [2020-07-01 10:56:05,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:56:05,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:56:06,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:56:06,070 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:56:06,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:56:06,100 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:56:06,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06 WrapperNode [2020-07-01 10:56:06,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:56:06,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:56:06,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:56:06,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:56:06,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:56:06,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:56:06,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:56:06,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:56:06,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:56:06,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:56:06,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:56:06,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:56:06,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (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 10:56:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:56:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:56:06,393 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:56:06,394 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-01 10:56:06,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:56:06 BoogieIcfgContainer [2020-07-01 10:56:06,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:56:06,398 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:56:06,398 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:56:06,400 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:56:06,400 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:56:06" (1/1) ... [2020-07-01 10:56:06,413 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 10:56:06,414 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:56:06,415 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:56:06,415 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:56:06,416 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:56:06,417 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:56:06,418 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:56:06,418 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:56:06,432 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:56:06,448 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 10:56:06,452 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 10:56:06,454 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:56:06,465 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 10:56:06,467 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 10:56:06,468 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:56:06,469 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:56:06,469 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:56:06,469 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:56:06,469 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 7 edges [2020-07-01 10:56:06,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:56:06 BasicIcfg [2020-07-01 10:56:06,470 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:56:06,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:56:06,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:56:06,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:56:06,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:56:05" (1/4) ... [2020-07-01 10:56:06,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72889b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:56:06, skipping insertion in model container [2020-07-01 10:56:06,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (2/4) ... [2020-07-01 10:56:06,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72889b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:56:06, skipping insertion in model container [2020-07-01 10:56:06,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:56:06" (3/4) ... [2020-07-01 10:56:06,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72889b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:56:06, skipping insertion in model container [2020-07-01 10:56:06,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:56:06" (4/4) ... [2020-07-01 10:56:06,478 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:56:06,489 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:56:06,495 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:56:06,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:56:06,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:56:06,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:56:06,532 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:56:06,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:56:06,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:56:06,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:56:06,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:56:06,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:56:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 10:56:06,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:56:06,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 10:56:06,609 INFO L271 CegarLoopResult]: At program point L16-2(lines 16 18) the Hoare annotation is: true [2020-07-01 10:56:06,609 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:56:06,609 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 18) no Hoare annotation was computed. [2020-07-01 10:56:06,610 INFO L271 CegarLoopResult]: At program point L14-2(lines 14 20) the Hoare annotation is: true [2020-07-01 10:56:06,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:56:06 BasicIcfg [2020-07-01 10:56:06,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:56:06,619 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:56:06,619 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:56:06,622 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:56:06,623 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:56:06,624 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:56:05" (1/5) ... [2020-07-01 10:56:06,624 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32e306f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:56:06, skipping insertion in model container [2020-07-01 10:56:06,624 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:56:06,625 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:56:06" (2/5) ... [2020-07-01 10:56:06,625 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32e306f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:56:06, skipping insertion in model container [2020-07-01 10:56:06,625 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:56:06,625 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:56:06" (3/5) ... [2020-07-01 10:56:06,626 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32e306f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:56:06, skipping insertion in model container [2020-07-01 10:56:06,626 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:56:06,626 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:56:06" (4/5) ... [2020-07-01 10:56:06,626 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32e306f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:56:06, skipping insertion in model container [2020-07-01 10:56:06,626 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:56:06,626 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:56:06" (5/5) ... [2020-07-01 10:56:06,628 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:56:06,655 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:56:06,655 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:56:06,655 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:56:06,655 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:56:06,655 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:56:06,656 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:56:06,656 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:56:06,656 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:56:06,659 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:56:06,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:56:06,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:56:06,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:56:06,682 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:56:06,683 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:56:06,683 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:56:06,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 10:56:06,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 10:56:06,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:56:06,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:56:06,684 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:56:06,684 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 10:56:06,689 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [32] ULTIMATE.startENTRY-->L14-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~post2=|v_ULTIMATE.start_main_#t~post2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 4#L14-2true [2020-07-01 10:56:06,690 INFO L796 eck$LassoCheckResult]: Loop: 4#L14-2true [36] L14-2-->L16-2: Formula: (and (<= 2 v_ULTIMATE.start_main_~x~0_10) (= (+ v_ULTIMATE.start_main_~x~0_9 1) v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, 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_#t~post2=|v_ULTIMATE.start_main_#t~post2_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~x~0] 6#L16-2true [45] L16-2-->L16-3: Formula: (> v_ULTIMATE.start_main_~x~0_4 v_ULTIMATE.start_main_~y~0_4) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3] 5#L16-3true [37] L16-3-->L14-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_7 (+ (* v_ULTIMATE.start_main_~x~0_6 (- 1)) v_ULTIMATE.start_main_~y~0_8)) (= v_ULTIMATE.start_main_~x~0_7 (+ v_ULTIMATE.start_main_~x~0_6 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5] 4#L14-2true [2020-07-01 10:56:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:06,696 INFO L82 PathProgramCache]: Analyzing trace with hash 63, now seen corresponding path program 1 times [2020-07-01 10:56:06,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:56:06,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924434576] [2020-07-01 10:56:06,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:56:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:06,772 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:56:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:06,773 INFO L82 PathProgramCache]: Analyzing trace with hash 65819, now seen corresponding path program 1 times [2020-07-01 10:56:06,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:56:06,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762557382] [2020-07-01 10:56:06,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:56:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:06,799 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:56:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:06,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1912861, now seen corresponding path program 1 times [2020-07-01 10:56:06,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:56:06,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470332502] [2020-07-01 10:56:06,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:56:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:06,818 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:56:06,887 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:56:06,887 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:56:06,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:56:06,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:56:06,888 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:56:06,888 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:56:06,888 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:56:06,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:56:06,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:56:06,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:56:06,889 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:56:06,905 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 10:56:06,913 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 10:56:06,937 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 10:56:06,941 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 10:56:07,016 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:56:07,016 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 10:56:07,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:56:07,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:56:07,031 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 10:56:07,031 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=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 10:56:07,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:56:07,065 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 10:56:07,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:56:07,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:56:07,143 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:56:07,145 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:56:07,145 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:56:07,145 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:56:07,145 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:56:07,146 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:56:07,146 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:56:07,146 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:56:07,146 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:56:07,146 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 10:56:07,146 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:56:07,146 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:56:07,148 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 10:56:07,152 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 10:56:07,167 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 10:56:07,171 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 10:56:07,222 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:56:07,227 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:56:07,232 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 10:56:07,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:56:07,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:56:07,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:56:07,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:56:07,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:56:07,239 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:56:07,239 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:56:07,242 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 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 10:56:07,275 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 10:56:07,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:56:07,278 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:56:07,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:56:07,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:56:07,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:56:07,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:56:07,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:56:07,285 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:56:07,292 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:56:07,292 INFO L444 ModelExtractionUtils]: 1 out of 4 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 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 10:56:07,301 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:56:07,301 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:56:07,301 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:56:07,302 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 10:56:07,337 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:56:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:56:07,370 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:56:07,371 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:56:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:56:07,384 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 10:56:07,385 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:56:07,401 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 10:56:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:56:07,435 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 10:56:07,435 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:56:07,476 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-07-01 10:56:07,481 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-07-01 10:56:07,483 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 3 states. [2020-07-01 10:56:07,548 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 3 states. Result 11 states and 26 transitions. Complement of second has 6 states. [2020-07-01 10:56:07,549 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 10:56:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 10:56:07,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2020-07-01 10:56:07,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 10:56:07,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:56:07,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 10:56:07,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:56:07,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 10:56:07,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:56:07,562 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 26 transitions. [2020-07-01 10:56:07,563 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:56:07,569 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 8 states and 18 transitions. [2020-07-01 10:56:07,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-07-01 10:56:07,570 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 10:56:07,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 18 transitions. [2020-07-01 10:56:07,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:56:07,572 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 18 transitions. [2020-07-01 10:56:07,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 18 transitions. [2020-07-01 10:56:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-07-01 10:56:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 10:56:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2020-07-01 10:56:07,601 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 16 transitions. [2020-07-01 10:56:07,601 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 16 transitions. [2020-07-01 10:56:07,601 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 10:56:07,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 16 transitions. [2020-07-01 10:56:07,602 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:56:07,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:56:07,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:56:07,603 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:56:07,603 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:56:07,603 INFO L794 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRY [32] ULTIMATE.startENTRY-->L14-2: 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|)) 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=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~post2=|v_ULTIMATE.start_main_#t~post2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_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, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 65#L14-2 [36] L14-2-->L16-2: Formula: (and (<= 2 v_ULTIMATE.start_main_~x~0_10) (= (+ v_ULTIMATE.start_main_~x~0_9 1) v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, 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_#t~post2=|v_ULTIMATE.start_main_#t~post2_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~x~0] 66#L16-2 [47] L16-2-->L16-2: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet3_5|) (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_5 1)) (<= v_ULTIMATE.start_main_~x~0_5 v_ULTIMATE.start_main_~y~0_6)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 69#L16-2 [2020-07-01 10:56:07,604 INFO L796 eck$LassoCheckResult]: Loop: 69#L16-2 [48] L16-2-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_5 1)) (> 0 |v_ULTIMATE.start_main_#t~nondet3_5|) (<= v_ULTIMATE.start_main_~x~0_5 v_ULTIMATE.start_main_~y~0_6)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 69#L16-2 [2020-07-01 10:56:07,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:07,604 INFO L82 PathProgramCache]: Analyzing trace with hash 61706, now seen corresponding path program 1 times [2020-07-01 10:56:07,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:56:07,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674944923] [2020-07-01 10:56:07,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:56:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:07,617 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:56:07,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:07,618 INFO L82 PathProgramCache]: Analyzing trace with hash 79, now seen corresponding path program 1 times [2020-07-01 10:56:07,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:56:07,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138589431] [2020-07-01 10:56:07,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:56:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:07,624 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:56:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1912934, now seen corresponding path program 1 times [2020-07-01 10:56:07,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:56:07,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490023843] [2020-07-01 10:56:07,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:56:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:07,640 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:56:07,654 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:56:07,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:56:07,654 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:56:07,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:56:07,654 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:56:07,655 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:56:07,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:56:07,655 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:56:07,655 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:56:07,655 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:56:07,655 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:56:07,656 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 10:56:07,663 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 10:56:07,666 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 10:56:07,702 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:56:07,703 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:56:07,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:56:07,707 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:56:07,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:56:07,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:56:07,970 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:56:07,973 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:56:07,973 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:56:07,973 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:56:07,973 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:56:07,973 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:56:07,974 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:56:07,974 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:56:07,974 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:56:07,974 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 10:56:07,974 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:56:07,975 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:56:07,976 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 10:56:07,984 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 10:56:07,988 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 10:56:08,021 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:56:08,021 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:56:08,025 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 10:56:08,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:56:08,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:56:08,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:56:08,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:56:08,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:56:08,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:56:08,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:56:08,033 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:56:08,037 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:56:08,037 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:56:08,044 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:56:08,044 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:56:08,044 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:56:08,044 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-07-01 10:56:08,076 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:56:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:56:08,122 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:56:08,123 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:56:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:56:08,128 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:56:08,129 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:56:08,129 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 10:56:08,129 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 10:56:08,130 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 10:56:08,130 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 16 transitions. cyclomatic complexity: 11 Second operand 2 states. [2020-07-01 10:56:08,163 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 16 transitions. cyclomatic complexity: 11. Second operand 2 states. Result 12 states and 27 transitions. Complement of second has 4 states. [2020-07-01 10:56:08,164 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 10:56:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 10:56:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-07-01 10:56:08,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 10:56:08,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:56:08,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 1 letters. [2020-07-01 10:56:08,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:56:08,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 10:56:08,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:56:08,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 27 transitions. [2020-07-01 10:56:08,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:56:08,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 9 states and 19 transitions. [2020-07-01 10:56:08,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-07-01 10:56:08,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-07-01 10:56:08,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 19 transitions. [2020-07-01 10:56:08,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 10:56:08,170 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 19 transitions. [2020-07-01 10:56:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 19 transitions. [2020-07-01 10:56:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2020-07-01 10:56:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 10:56:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 14 transitions. [2020-07-01 10:56:08,172 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 14 transitions. [2020-07-01 10:56:08,172 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 14 transitions. [2020-07-01 10:56:08,172 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 10:56:08,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 14 transitions. [2020-07-01 10:56:08,173 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:56:08,173 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:56:08,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:56:08,173 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 10:56:08,173 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:56:08,174 INFO L794 eck$LassoCheckResult]: Stem: 114#ULTIMATE.startENTRY [32] ULTIMATE.startENTRY-->L14-2: 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|)) 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=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~post2=|v_ULTIMATE.start_main_#t~post2_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~post5=|v_ULTIMATE.start_main_#t~post5_1|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_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, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~post5, ULTIMATE.start_main_#t~post4] 115#L14-2 [36] L14-2-->L16-2: Formula: (and (<= 2 v_ULTIMATE.start_main_~x~0_10) (= (+ v_ULTIMATE.start_main_~x~0_9 1) v_ULTIMATE.start_main_~x~0_10) (= v_ULTIMATE.start_main_~y~0_9 (+ v_ULTIMATE.start_main_~y~0_10 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, 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_#t~post2=|v_ULTIMATE.start_main_#t~post2_2|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post2, ULTIMATE.start_main_~x~0] 116#L16-2 [48] L16-2-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_5 1)) (> 0 |v_ULTIMATE.start_main_#t~nondet3_5|) (<= v_ULTIMATE.start_main_~x~0_5 v_ULTIMATE.start_main_~y~0_6)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 119#L16-2 [2020-07-01 10:56:08,174 INFO L796 eck$LassoCheckResult]: Loop: 119#L16-2 [48] L16-2-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_5 1)) (> 0 |v_ULTIMATE.start_main_#t~nondet3_5|) (<= v_ULTIMATE.start_main_~x~0_5 v_ULTIMATE.start_main_~y~0_6)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_4|, ULTIMATE.start_main_#t~post4=|v_ULTIMATE.start_main_#t~post4_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_#t~post4] 119#L16-2 [2020-07-01 10:56:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:08,174 INFO L82 PathProgramCache]: Analyzing trace with hash 61707, now seen corresponding path program 1 times [2020-07-01 10:56:08,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:56:08,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648583712] [2020-07-01 10:56:08,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:56:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:08,188 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:56:08,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:08,188 INFO L82 PathProgramCache]: Analyzing trace with hash 79, now seen corresponding path program 2 times [2020-07-01 10:56:08,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:56:08,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194827764] [2020-07-01 10:56:08,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:56:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:08,195 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:56:08,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1912965, now seen corresponding path program 2 times [2020-07-01 10:56:08,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:56:08,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446246708] [2020-07-01 10:56:08,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:56:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:56:08,210 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:56:08,227 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:56:08,227 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:56:08,227 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:56:08,227 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:56:08,228 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 10:56:08,228 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:56:08,228 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:56:08,228 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:56:08,228 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:56:08,228 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:56:08,229 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:56:08,230 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 10:56:08,250 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 10:56:08,257 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 10:56:08,283 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:56:08,283 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:56:08,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 10:56:08,287 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:56:08,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 10:56:08,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 10:56:08,562 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 10:56:08,564 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 10:56:08,565 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 10:56:08,565 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 10:56:08,565 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 10:56:08,565 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 10:56:08,565 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 10:56:08,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 10:56:08,566 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 10:56:08,566 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 10:56:08,566 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 10:56:08,566 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 10:56:08,567 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 10:56:08,574 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 10:56:08,578 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 10:56:08,603 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 10:56:08,603 INFO L489 LassoAnalysis]: Using template 'affine'. 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 10:56:08,606 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 10:56:08,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 10:56:08,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 10:56:08,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 10:56:08,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 10:56:08,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 10:56:08,611 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 10:56:08,611 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 10:56:08,614 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 10:56:08,618 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 10:56:08,618 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 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 10:56:08,625 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 10:56:08,625 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 10:56:08,626 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 10:56:08,626 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 10:56:08,656 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 10:56:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:56:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:56:08,680 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 10:56:08,680 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:56:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 10:56:08,685 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 10:56:08,686 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 10:56:08,686 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 10:56:08,686 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 10:56:08,686 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 10:56:08,687 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 14 transitions. cyclomatic complexity: 9 Second operand 2 states. [2020-07-01 10:56:08,710 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 14 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 11 states and 22 transitions. Complement of second has 4 states. [2020-07-01 10:56:08,710 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 10:56:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 10:56:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-07-01 10:56:08,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 10:56:08,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:56:08,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 1 letters. [2020-07-01 10:56:08,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:56:08,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 10:56:08,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 10:56:08,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 22 transitions. [2020-07-01 10:56:08,714 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:56:08,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-07-01 10:56:08,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 10:56:08,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 10:56:08,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 10:56:08,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 10:56:08,715 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:56:08,715 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:56:08,715 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 10:56:08,715 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 10:56:08,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 10:56:08,716 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 10:56:08,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 10:56:08,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:56:08 BasicIcfg [2020-07-01 10:56:08,722 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:56:08,724 INFO L168 Benchmark]: Toolchain (without parser) took 2911.47 ms. Allocated memory was 649.6 MB in the beginning and 682.1 MB in the end (delta: 32.5 MB). Free memory was 562.7 MB in the beginning and 417.7 MB in the end (delta: 145.0 MB). Peak memory consumption was 177.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:56:08,725 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 584.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:56:08,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.71 ms. Allocated memory was 649.6 MB in the beginning and 682.1 MB in the end (delta: 32.5 MB). Free memory was 562.7 MB in the beginning and 645.5 MB in the end (delta: -82.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:56:08,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.12 ms. Allocated memory is still 682.1 MB. Free memory was 645.5 MB in the beginning and 644.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:56:08,726 INFO L168 Benchmark]: Boogie Preprocessor took 20.69 ms. Allocated memory is still 682.1 MB. Free memory was 644.2 MB in the beginning and 642.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:56:08,727 INFO L168 Benchmark]: RCFGBuilder took 238.74 ms. Allocated memory is still 682.1 MB. Free memory was 642.8 MB in the beginning and 626.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 50.3 GB. [2020-07-01 10:56:08,728 INFO L168 Benchmark]: BlockEncodingV2 took 72.63 ms. Allocated memory is still 682.1 MB. Free memory was 626.0 MB in the beginning and 620.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:56:08,728 INFO L168 Benchmark]: TraceAbstraction took 147.02 ms. Allocated memory is still 682.1 MB. Free memory was 620.6 MB in the beginning and 612.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:56:08,729 INFO L168 Benchmark]: BuchiAutomizer took 2103.07 ms. Allocated memory is still 682.1 MB. Free memory was 611.1 MB in the beginning and 417.7 MB in the end (delta: 193.4 MB). Peak memory consumption was 193.4 MB. Max. memory is 50.3 GB. [2020-07-01 10:56:08,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 4 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 584.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 287.71 ms. Allocated memory was 649.6 MB in the beginning and 682.1 MB in the end (delta: 32.5 MB). Free memory was 562.7 MB in the beginning and 645.5 MB in the end (delta: -82.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 36.12 ms. Allocated memory is still 682.1 MB. Free memory was 645.5 MB in the beginning and 644.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.69 ms. Allocated memory is still 682.1 MB. Free memory was 644.2 MB in the beginning and 642.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 238.74 ms. Allocated memory is still 682.1 MB. Free memory was 642.8 MB in the beginning and 626.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 72.63 ms. Allocated memory is still 682.1 MB. Free memory was 626.0 MB in the beginning and 620.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 147.02 ms. Allocated memory is still 682.1 MB. Free memory was 620.6 MB in the beginning and 612.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2103.07 ms. Allocated memory is still 682.1 MB. Free memory was 611.1 MB in the beginning and 417.7 MB in the end (delta: 193.4 MB). Peak memory consumption was 193.4 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: 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 3 terminating modules (0 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 2 * y + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 9 SDtfs, 29 SDslu, 7 SDs, 0 SdLazy, 61 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp84 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf94 smp100 dnf100 smp100 tf110 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 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 10:56:02.526 ----------------------------------------------- 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_DSqmqp/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:56:09.568 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check