/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:50:37,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:50:37,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:50:37,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:50:37,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:50:37,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:50:37,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:50:37,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:50:37,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:50:37,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:50:37,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:50:37,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:50:37,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:50:37,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:50:37,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:50:37,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:50:37,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:50:37,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:50:37,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:50:37,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:50:37,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:50:37,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:50:37,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:50:37,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:50:37,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:50:37,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:50:37,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:50:37,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:50:37,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:50:37,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:50:37,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:50:37,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:50:37,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:50:37,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:50:37,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:50:37,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:50:37,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:50:37,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:50:37,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:50:37,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:50:37,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:50:37,871 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 12:50:37,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:50:37,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:50:37,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:50:37,886 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:50:37,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:50:37,887 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:50:37,887 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:50:37,887 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:50:37,887 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:50:37,887 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:50:37,888 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:50:37,888 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:50:37,888 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:50:37,888 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:50:37,888 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:37,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:50:37,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:50:37,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:50:37,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:50:37,889 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:50:37,889 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:50:37,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:50:37,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:50:37,890 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:50:37,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:50:37,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:50:37,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:50:37,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:50:37,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:50:38,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:50:38,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:50:38,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:50:38,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:50:38,073 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:50:38,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:50:38,266 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_DLZ_iP/tmp/5639b484558a4129a500b2be6c9d910a/FLAGb58c22d1d [2020-07-01 12:50:38,600 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:50:38,601 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:50:38,608 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_DLZ_iP/tmp/5639b484558a4129a500b2be6c9d910a/FLAGb58c22d1d [2020-07-01 12:50:39,181 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_DLZ_iP/tmp/5639b484558a4129a500b2be6c9d910a [2020-07-01 12:50:39,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:50:39,194 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:50:39,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:50:39,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:50:39,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:50:39,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6333e69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39, skipping insertion in model container [2020-07-01 12:50:39,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:50:39,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:50:39,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:50:39,463 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:50:39,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:50:39,494 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:50:39,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39 WrapperNode [2020-07-01 12:50:39,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:50:39,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:50:39,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:50:39,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:50:39,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:50:39,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:50:39,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:50:39,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:50:39,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:50:39,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:50:39,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:50:39,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:50:39,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:50:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:50:39,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:50:39,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:50:39,786 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:50:39,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:50:39 BoogieIcfgContainer [2020-07-01 12:50:39,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:50:39,790 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:50:39,790 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:50:39,793 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:50:39,793 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:50:39" (1/1) ... [2020-07-01 12:50:39,805 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 9 edges [2020-07-01 12:50:39,807 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:50:39,808 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:50:39,808 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:50:39,809 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:50:39,810 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:50:39,811 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:50:39,812 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:50:39,824 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:50:39,832 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 12:50:39,837 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:50:39,838 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:50:39,853 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 12:50:39,856 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 12:50:39,857 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:50:39,857 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:50:39,858 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:50:39,858 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:50:39,858 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 12:50:39,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:50:39 BasicIcfg [2020-07-01 12:50:39,859 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:50:39,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:50:39,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:50:39,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:50:39,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:50:39" (1/4) ... [2020-07-01 12:50:39,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a312f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:50:39, skipping insertion in model container [2020-07-01 12:50:39,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (2/4) ... [2020-07-01 12:50:39,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a312f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:50:39, skipping insertion in model container [2020-07-01 12:50:39,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:50:39" (3/4) ... [2020-07-01 12:50:39,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a312f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:50:39, skipping insertion in model container [2020-07-01 12:50:39,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:50:39" (4/4) ... [2020-07-01 12:50:39,868 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:50:39,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:50:39,885 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:50:39,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:50:39,921 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:50:39,921 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:50:39,922 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:50:39,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:50:39,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:50:39,922 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:50:39,922 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:50:39,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:50:39,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 12:50:39,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:50:39,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 12:50:39,995 INFO L271 CegarLoopResult]: At program point L19-2(lines 18 25) the Hoare annotation is: true [2020-07-01 12:50:39,996 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:50:40,009 INFO L268 CegarLoopResult]: For program point L19(lines 19 24) no Hoare annotation was computed. [2020-07-01 12:50:40,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:50:40 BasicIcfg [2020-07-01 12:50:40,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:50:40,018 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:50:40,018 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:50:40,021 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:50:40,022 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:50:40,022 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:50:39" (1/5) ... [2020-07-01 12:50:40,023 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@361af950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:50:40, skipping insertion in model container [2020-07-01 12:50:40,023 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:50:40,023 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:50:39" (2/5) ... [2020-07-01 12:50:40,023 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@361af950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:50:40, skipping insertion in model container [2020-07-01 12:50:40,024 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:50:40,024 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:50:39" (3/5) ... [2020-07-01 12:50:40,024 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@361af950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:50:40, skipping insertion in model container [2020-07-01 12:50:40,024 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:50:40,025 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:50:39" (4/5) ... [2020-07-01 12:50:40,025 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@361af950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:50:40, skipping insertion in model container [2020-07-01 12:50:40,025 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:50:40,025 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:50:40" (5/5) ... [2020-07-01 12:50:40,027 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:50:40,055 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:50:40,055 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:50:40,056 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:50:40,056 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:50:40,056 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:50:40,056 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:50:40,056 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:50:40,056 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:50:40,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:50:40,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:50:40,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:50:40,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:50:40,083 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:50:40,084 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:50:40,084 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:50:40,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 12:50:40,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:50:40,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:50:40,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:50:40,085 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:50:40,085 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:50:40,090 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [25] ULTIMATE.startENTRY-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~N~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~j~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~i~0_1 v_ULTIMATE.start_main_~N~0_1)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0] 4#L19-2true [2020-07-01 12:50:40,091 INFO L796 eck$LassoCheckResult]: Loop: 4#L19-2true [29] L19-2-->L19: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 5#L19true [34] L19-->L19-2: Formula: (and (>= 0 v_ULTIMATE.start_main_~j~0_9) (= v_ULTIMATE.start_main_~i~0_8 (+ v_ULTIMATE.start_main_~i~0_9 (- 1))) (= v_ULTIMATE.start_main_~j~0_8 v_ULTIMATE.start_main_~N~0_6)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0] 4#L19-2true [2020-07-01 12:50:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:50:40,098 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2020-07-01 12:50:40,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:50:40,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171499619] [2020-07-01 12:50:40,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:50:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:40,181 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:50:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:50:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1894, now seen corresponding path program 1 times [2020-07-01 12:50:40,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:50:40,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345758765] [2020-07-01 12:50:40,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:50:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:40,197 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:50:40,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:50:40,199 INFO L82 PathProgramCache]: Analyzing trace with hash 54749, now seen corresponding path program 1 times [2020-07-01 12:50:40,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:50:40,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295419436] [2020-07-01 12:50:40,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:50:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:40,212 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:50:40,258 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:50:40,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:50:40,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:50:40,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:50:40,259 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:50:40,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:40,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:50:40,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:50:40,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:50:40,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:50:40,260 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:50:40,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:40,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:40,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:40,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:40,403 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:50:40,404 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:40,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:50:40,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:50:40,419 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:50:40,419 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:40,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:50:40,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:50:40,457 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:50:40,457 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:40,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:50:40,490 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:40,526 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:50:40,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:50:40,563 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:50:40,565 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:50:40,565 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:50:40,565 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:50:40,565 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:50:40,565 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:50:40,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:50:40,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:50:40,566 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:50:40,566 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:50:40,566 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:50:40,566 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:50:40,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:40,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:40,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:40,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:40,667 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:50:40,673 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:50:40,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:50:40,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:50:40,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:50:40,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:50:40,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:50:40,687 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:50:40,688 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:50:40,696 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:50:40,729 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:50:40,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:50:40,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:50:40,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:50:40,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:50:40,736 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:50:40,736 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:50:40,742 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:50:40,775 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:50:40,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:50:40,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:50:40,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:50:40,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:50:40,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:50:40,780 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:50:40,780 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:50:40,784 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:50:40,788 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 12:50:40,788 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:50:40,800 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:50:40,801 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:50:40,801 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:50:40,802 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 12:50:40,836 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:50:40,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:50:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:50:40,869 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:50:40,870 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:50:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:50:40,884 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:50:40,885 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:50:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:50:40,928 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 12:50:40,933 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 12:50:40,934 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 12:50:40,965 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 8 states and 11 transitions. Complement of second has 4 states. [2020-07-01 12:50:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 12:50:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:50:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-07-01 12:50:40,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 12:50:40,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:50:40,971 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 12:50:40,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:50:40,971 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 12:50:40,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:50:40,977 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2020-07-01 12:50:40,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:50:40,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 11 transitions. [2020-07-01 12:50:40,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 12:50:40,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 12:50:40,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-07-01 12:50:40,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:50:40,984 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-07-01 12:50:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-07-01 12:50:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-07-01 12:50:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 12:50:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-07-01 12:50:41,012 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 12:50:41,012 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 12:50:41,012 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:50:41,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-07-01 12:50:41,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 12:50:41,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:50:41,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:50:41,013 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:50:41,014 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 12:50:41,014 INFO L794 eck$LassoCheckResult]: Stem: 44#ULTIMATE.startENTRY [25] ULTIMATE.startENTRY-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~N~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~j~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~i~0_1 v_ULTIMATE.start_main_~N~0_1)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0] 45#L19-2 [29] L19-2-->L19: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 47#L19 [2020-07-01 12:50:41,014 INFO L796 eck$LassoCheckResult]: Loop: 47#L19 [30] L19-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~j~0_6 (+ v_ULTIMATE.start_main_~j~0_7 (- 1))) (< 0 v_ULTIMATE.start_main_~j~0_7)) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 46#L19-2 [29] L19-2-->L19: Formula: (< 0 v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} AuxVars[] AssignedVars[] 47#L19 [2020-07-01 12:50:41,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:50:41,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1765, now seen corresponding path program 1 times [2020-07-01 12:50:41,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:50:41,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191824637] [2020-07-01 12:50:41,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:50:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:41,023 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:50:41,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:50:41,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1920, now seen corresponding path program 1 times [2020-07-01 12:50:41,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:50:41,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169640874] [2020-07-01 12:50:41,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:50:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:41,030 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:50:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:50:41,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1697124, now seen corresponding path program 1 times [2020-07-01 12:50:41,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:50:41,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450026185] [2020-07-01 12:50:41,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:50:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:50:41,040 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:50:41,053 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:50:41,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:50:41,054 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:50:41,054 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:50:41,054 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:50:41,054 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:41,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:50:41,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:50:41,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:50:41,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:50:41,055 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:50:41,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:41,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:41,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:41,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:41,111 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:50:41,111 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:41,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:50:41,114 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:50:41,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:50:41,119 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:41,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:50:41,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:50:41,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:50:41,169 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=1} Honda state: {ULTIMATE.start_main_~i~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:41,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:50:41,204 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:50:41,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:50:41,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:50:41,278 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:50:41,280 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:50:41,281 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:50:41,281 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:50:41,281 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:50:41,281 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:50:41,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:50:41,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:50:41,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:50:41,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:50:41,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:50:41,282 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:50:41,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:41,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:41,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:41,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:50:41,363 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:50:41,363 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:50:41,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:50:41,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:50:41,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:50:41,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:50:41,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:50:41,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:50:41,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:50:41,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:50:41,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:50:41,403 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:50:41,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:50:41,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:50:41,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:50:41,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:50:41,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:50:41,407 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:50:41,407 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:50:41,410 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:50:41,418 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:50:41,419 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:50:41,430 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:50:41,430 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:50:41,430 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:50:41,430 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-07-01 12:50:41,461 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:50:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:50:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:50:41,481 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:50:41,482 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:50:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:50:41,487 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:50:41,487 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:50:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:50:41,542 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:50:41,542 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 3 loop predicates [2020-07-01 12:50:41,542 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-07-01 12:50:41,554 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 15 transitions. Complement of second has 4 states. [2020-07-01 12:50:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 12:50:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:50:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-07-01 12:50:41,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 12:50:41,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:50:41,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 12:50:41,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:50:41,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 12:50:41,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:50:41,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 15 transitions. [2020-07-01 12:50:41,559 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:50:41,560 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-07-01 12:50:41,560 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:50:41,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:50:41,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:50:41,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:50:41,560 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:50:41,560 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:50:41,560 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:50:41,561 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:50:41,561 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:50:41,561 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:50:41,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:50:41,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:50:41 BasicIcfg [2020-07-01 12:50:41,567 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:50:41,570 INFO L168 Benchmark]: Toolchain (without parser) took 2375.42 ms. Allocated memory was 514.9 MB in the beginning and 587.2 MB in the end (delta: 72.4 MB). Free memory was 435.9 MB in the beginning and 505.8 MB in the end (delta: -70.0 MB). Peak memory consumption was 2.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:50:41,571 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 514.9 MB. Free memory is still 455.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:50:41,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.92 ms. Allocated memory was 514.9 MB in the beginning and 559.4 MB in the end (delta: 44.6 MB). Free memory was 435.9 MB in the beginning and 529.2 MB in the end (delta: -93.3 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-07-01 12:50:41,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.50 ms. Allocated memory is still 559.4 MB. Free memory was 529.2 MB in the beginning and 527.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:50:41,573 INFO L168 Benchmark]: Boogie Preprocessor took 20.64 ms. Allocated memory is still 559.4 MB. Free memory was 527.5 MB in the beginning and 526.7 MB in the end (delta: 821.7 kB). Peak memory consumption was 821.7 kB. Max. memory is 50.3 GB. [2020-07-01 12:50:41,573 INFO L168 Benchmark]: RCFGBuilder took 238.71 ms. Allocated memory is still 559.4 MB. Free memory was 525.9 MB in the beginning and 514.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:50:41,574 INFO L168 Benchmark]: BlockEncodingV2 took 68.89 ms. Allocated memory is still 559.4 MB. Free memory was 514.7 MB in the beginning and 510.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:50:41,574 INFO L168 Benchmark]: TraceAbstraction took 156.98 ms. Allocated memory is still 559.4 MB. Free memory was 509.7 MB in the beginning and 501.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:50:41,575 INFO L168 Benchmark]: BuchiAutomizer took 1549.84 ms. Allocated memory was 559.4 MB in the beginning and 587.2 MB in the end (delta: 27.8 MB). Free memory was 501.3 MB in the beginning and 505.8 MB in the end (delta: -4.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:50:41,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 9 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 514.9 MB. Free memory is still 455.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 299.92 ms. Allocated memory was 514.9 MB in the beginning and 559.4 MB in the end (delta: 44.6 MB). Free memory was 435.9 MB in the beginning and 529.2 MB in the end (delta: -93.3 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.50 ms. Allocated memory is still 559.4 MB. Free memory was 529.2 MB in the beginning and 527.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.64 ms. Allocated memory is still 559.4 MB. Free memory was 527.5 MB in the beginning and 526.7 MB in the end (delta: 821.7 kB). Peak memory consumption was 821.7 kB. Max. memory is 50.3 GB. * RCFGBuilder took 238.71 ms. Allocated memory is still 559.4 MB. Free memory was 525.9 MB in the beginning and 514.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 68.89 ms. Allocated memory is still 559.4 MB. Free memory was 514.7 MB in the beginning and 510.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 156.98 ms. Allocated memory is still 559.4 MB. Free memory was 509.7 MB in the beginning and 501.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1549.84 ms. Allocated memory was 559.4 MB in the beginning and 587.2 MB in the end (delta: 27.8 MB). Free memory was 501.3 MB in the beginning and 505.8 MB in the end (delta: -4.5 MB). Peak memory consumption was 23.3 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: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 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=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function j and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. 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 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 12 SDslu, 4 SDs, 0 SdLazy, 15 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax183 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:50:35.641 ----------------------------------------------- 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/sandbox2/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/sandbox2/tmp/BenchExec_run_DLZ_iP/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:50:42.013 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check