/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:32:51,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:32:51,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:32:51,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:32:51,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:32:51,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:32:51,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:32:51,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:32:51,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:32:51,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:32:51,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:32:51,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:32:51,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:32:51,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:32:51,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:32:51,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:32:51,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:32:51,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:32:51,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:32:51,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:32:51,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:32:51,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:32:51,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:32:51,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:32:51,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:32:51,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:32:51,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:32:51,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:32:51,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:32:51,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:32:51,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:32:51,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:32:51,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:32:51,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:32:51,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:32:51,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:32:51,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:32:51,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:32:51,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:32:51,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:32:51,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:32:51,356 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 12:32:51,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:32:51,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:32:51,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:32:51,372 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:32:51,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:32:51,372 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:32:51,372 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:32:51,372 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:32:51,372 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:32:51,373 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:32:51,373 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:32:51,373 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:32:51,373 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:32:51,373 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:32:51,373 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:51,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:32:51,374 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:32:51,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:32:51,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:32:51,374 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:32:51,375 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:32:51,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:32:51,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:32:51,375 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:32:51,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:32:51,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:32:51,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:32:51,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:32:51,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:32:51,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:32:51,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:32:51,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:32:51,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:32:51,563 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:32:51,563 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:32:51,625 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_AhqvO9/tmp/1150766a1b2a490fa46faca4b275785a/FLAG70a632f8b [2020-07-01 12:32:51,952 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:32:51,953 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:32:51,959 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_AhqvO9/tmp/1150766a1b2a490fa46faca4b275785a/FLAG70a632f8b [2020-07-01 12:32:52,364 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_AhqvO9/tmp/1150766a1b2a490fa46faca4b275785a [2020-07-01 12:32:52,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:32:52,377 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:32:52,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:32:52,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:32:52,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:32:52,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9e0a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52, skipping insertion in model container [2020-07-01 12:32:52,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:32:52,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:32:52,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:32:52,644 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:32:52,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:32:52,677 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:32:52,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52 WrapperNode [2020-07-01 12:32:52,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:32:52,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:32:52,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:32:52,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:32:52,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:32:52,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:32:52,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:32:52,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:32:52,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:52,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:32:52,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:32:52,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:32:52,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:32:52,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (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 12:32:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:32:52,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:32:52,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:32:52,979 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:32:52,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:32:52 BoogieIcfgContainer [2020-07-01 12:32:52,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:32:52,984 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:32:52,984 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:32:52,986 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:32:52,987 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:32:52" (1/1) ... [2020-07-01 12:32:53,000 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 12 edges [2020-07-01 12:32:53,001 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:32:53,002 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:32:53,002 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:32:53,003 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:32:53,004 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:32:53,005 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:32:53,005 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:32:53,020 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:32:53,038 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 12:32:53,042 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:32:53,043 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:32:53,054 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 12:32:53,056 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 12:32:53,057 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:32:53,057 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:32:53,057 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:32:53,058 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:32:53,058 INFO L313 BlockEncoder]: Encoded RCFG 5 locations, 8 edges [2020-07-01 12:32:53,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:32:53 BasicIcfg [2020-07-01 12:32:53,059 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:32:53,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:32:53,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:32:53,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:32:53,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:32:52" (1/4) ... [2020-07-01 12:32:53,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c18e3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (2/4) ... [2020-07-01 12:32:53,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c18e3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:32:52" (3/4) ... [2020-07-01 12:32:53,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c18e3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:32:53" (4/4) ... [2020-07-01 12:32:53,068 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:32:53,078 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:32:53,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:32:53,099 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:32:53,122 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:32:53,123 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:32:53,123 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:32:53,123 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:32:53,123 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:32:53,123 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:32:53,124 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:32:53,124 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:32:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-07-01 12:32:53,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:32:53,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-07-01 12:32:53,197 INFO L268 CegarLoopResult]: For program point L16(lines 16 21) no Hoare annotation was computed. [2020-07-01 12:32:53,197 INFO L268 CegarLoopResult]: For program point L16-2(lines 12 22) no Hoare annotation was computed. [2020-07-01 12:32:53,197 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:32:53,198 INFO L268 CegarLoopResult]: For program point L12(lines 12 22) no Hoare annotation was computed. [2020-07-01 12:32:53,198 INFO L271 CegarLoopResult]: At program point L11-2(lines 11 24) the Hoare annotation is: true [2020-07-01 12:32:53,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:32:53 BasicIcfg [2020-07-01 12:32:53,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:32:53,208 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:32:53,208 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:32:53,211 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:32:53,212 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,212 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:32:52" (1/5) ... [2020-07-01 12:32:53,213 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79173c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,213 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,213 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:32:52" (2/5) ... [2020-07-01 12:32:53,213 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79173c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,213 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,214 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:32:52" (3/5) ... [2020-07-01 12:32:53,214 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79173c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,214 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,214 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:32:53" (4/5) ... [2020-07-01 12:32:53,215 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79173c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:32:53, skipping insertion in model container [2020-07-01 12:32:53,215 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:32:53,215 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:32:53" (5/5) ... [2020-07-01 12:32:53,216 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:32:53,246 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:32:53,246 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:32:53,246 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:32:53,246 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:32:53,247 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:32:53,247 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:32:53,247 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:32:53,247 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:32:53,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 12:32:53,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 12:32:53,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:53,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:53,272 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:32:53,272 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:32:53,272 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:32:53,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states. [2020-07-01 12:32:53,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 12:32:53,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:53,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:53,274 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:32:53,274 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:32:53,279 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [31] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 7#L11-2true [2020-07-01 12:32:53,279 INFO L796 eck$LassoCheckResult]: Loop: 7#L11-2true [45] L11-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 5#L12true [34] L12-->L16-2: Formula: (and (< (+ v_ULTIMATE.start_main_~w~0_10 v_ULTIMATE.start_main_~i~0_15) 0) (= 1 (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~i~0_13))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 6#L16-2true [38] L16-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~w~0_8 (+ v_ULTIMATE.start_main_~w~0_9 1)) InVars {ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~w~0] 7#L11-2true [2020-07-01 12:32:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 1 times [2020-07-01 12:32:53,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:53,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930514098] [2020-07-01 12:32:53,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:53,364 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:53,366 INFO L82 PathProgramCache]: Analyzing trace with hash 74128, now seen corresponding path program 1 times [2020-07-01 12:32:53,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:53,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313527903] [2020-07-01 12:32:53,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:53,385 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:53,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:53,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1891379, now seen corresponding path program 1 times [2020-07-01 12:32:53,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:53,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107724406] [2020-07-01 12:32:53,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:53,402 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:53,450 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:53,451 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:53,451 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:53,451 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:53,451 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:32:53,452 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:53,452 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:53,452 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:53,452 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:32:53,452 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:53,453 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:53,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:32:53,484 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 12:32:53,495 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 12:32:53,616 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:53,617 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 12:32:53,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:53,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:53,633 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:53,634 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 12:32:53,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:53,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:53,672 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:53,673 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 12:32:53,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:53,705 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 12:32:53,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:32:53,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:53,789 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:32:53,791 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:53,791 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:53,792 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:53,792 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:53,792 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:32:53,792 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:53,792 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:53,792 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:53,792 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:32:53,792 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:53,793 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:53,795 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 12:32:53,799 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 12:32:53,803 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 12:32:53,879 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:53,885 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 12:32:53,889 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 12:32:53,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:53,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:53,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:53,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:53,899 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:32:53,899 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:32:53,906 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 12:32:53,938 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 12:32:53,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:53,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:53,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:53,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:53,945 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:32:53,945 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:32:53,952 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 12:32:53,984 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 12:32:53,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:53,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:32:53,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:53,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:53,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:53,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:32:53,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:32:53,994 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:32:54,003 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:32:54,003 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/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 12:32:54,015 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:32:54,016 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:32:54,016 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:32:54,017 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 12:32:54,052 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:32:54,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:54,096 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:32:54,097 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:32:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:54,109 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:32:54,109 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:32:54,147 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 12:32:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:54,207 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:32:54,208 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:32:54,214 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 12:32:54,219 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 12:32:54,221 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states. Second operand 4 states. [2020-07-01 12:32:54,451 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states.. Second operand 4 states. Result 46 states and 73 transitions. Complement of second has 14 states. [2020-07-01 12:32:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 5 non-accepting loop states 2 accepting loop states [2020-07-01 12:32:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:32:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 43 transitions. [2020-07-01 12:32:54,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 43 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 12:32:54,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:54,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 43 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 12:32:54,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:54,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 43 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 12:32:54,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:54,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 73 transitions. [2020-07-01 12:32:54,472 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-07-01 12:32:54,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 26 states and 42 transitions. [2020-07-01 12:32:54,480 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-07-01 12:32:54,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2020-07-01 12:32:54,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 42 transitions. [2020-07-01 12:32:54,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:32:54,481 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 42 transitions. [2020-07-01 12:32:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 42 transitions. [2020-07-01 12:32:54,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2020-07-01 12:32:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-01 12:32:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2020-07-01 12:32:54,513 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2020-07-01 12:32:54,513 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2020-07-01 12:32:54,513 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:32:54,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2020-07-01 12:32:54,514 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2020-07-01 12:32:54,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:54,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:54,515 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:32:54,515 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:32:54,516 INFO L794 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 120#L11-2 [46] L11-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 127#L12 [2020-07-01 12:32:54,516 INFO L796 eck$LassoCheckResult]: Loop: 127#L12 [34] L12-->L16-2: Formula: (and (< (+ v_ULTIMATE.start_main_~w~0_10 v_ULTIMATE.start_main_~i~0_15) 0) (= 1 (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~i~0_13))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 116#L16-2 [38] L16-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~w~0_8 (+ v_ULTIMATE.start_main_~w~0_9 1)) InVars {ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~w~0] 129#L11-2 [45] L11-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 127#L12 [2020-07-01 12:32:54,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1968, now seen corresponding path program 1 times [2020-07-01 12:32:54,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:54,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499325560] [2020-07-01 12:32:54,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,525 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash 63688, now seen corresponding path program 2 times [2020-07-01 12:32:54,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:54,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883728612] [2020-07-01 12:32:54,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:54,536 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:54,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:54,537 INFO L82 PathProgramCache]: Analyzing trace with hash 58662585, now seen corresponding path program 1 times [2020-07-01 12:32:54,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:54,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963045454] [2020-07-01 12:32:54,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:32:54,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963045454] [2020-07-01 12:32:54,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:32:54,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:32:54,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703028373] [2020-07-01 12:32:54,611 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:54,612 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:54,612 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:54,612 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:54,612 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:32:54,612 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:54,612 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:54,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:54,613 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:32:54,613 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:54,613 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:54,614 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 12:32:54,619 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 12:32:54,623 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 12:32:54,689 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:54,690 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 12:32:54,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:54,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:54,709 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:54,709 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 12:32:54,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:54,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:54,747 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:54,747 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/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 12:32:54,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:54,781 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 12:32:54,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:32:54,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:54,956 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:32:54,960 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:54,960 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:54,960 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:54,961 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:54,961 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:32:54,961 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:54,961 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:54,961 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:54,961 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:32:54,961 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:54,961 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:54,963 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 12:32:54,969 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 12:32:54,975 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 12:32:55,045 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:55,045 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 12:32:55,050 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 12:32:55,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:55,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:55,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:55,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:55,056 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:32:55,056 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:32:55,060 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 12:32:55,093 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 12:32:55,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:55,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:55,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:55,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:55,099 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 12:32:55,099 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 12:32:55,105 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 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 12:32:55,138 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:32:55,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:32:55,140 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:32:55,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:32:55,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:32:55,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:32:55,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:32:55,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:32:55,166 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:32:55,171 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:32:55,172 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/sandbox2/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:32:55,174 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:32:55,174 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:32:55,175 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:32:55,175 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~w~0) = -1*ULTIMATE.start_main_~w~0 Supporting invariants [] [2020-07-01 12:32:55,205 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:32:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:55,234 INFO L264 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:32:55,234 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:32:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:55,239 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 12:32:55,239 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:32:55,264 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 12:32:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,301 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 12:32:55,301 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 12:32:55,301 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 12:32:55,301 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 18 states and 28 transitions. cyclomatic complexity: 13 Second operand 4 states. [2020-07-01 12:32:55,446 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 18 states and 28 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 85 states and 132 transitions. Complement of second has 30 states. [2020-07-01 12:32:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 5 non-accepting loop states 2 accepting loop states [2020-07-01 12:32:55,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:32:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 30 transitions. [2020-07-01 12:32:55,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-01 12:32:55,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:55,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-01 12:32:55,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:55,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-01 12:32:55,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:32:55,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 132 transitions. [2020-07-01 12:32:55,455 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2020-07-01 12:32:55,457 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 69 states and 108 transitions. [2020-07-01 12:32:55,457 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-07-01 12:32:55,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2020-07-01 12:32:55,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 108 transitions. [2020-07-01 12:32:55,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:32:55,458 INFO L688 BuchiCegarLoop]: Abstraction has 69 states and 108 transitions. [2020-07-01 12:32:55,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states and 108 transitions. [2020-07-01 12:32:55,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 43. [2020-07-01 12:32:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-01 12:32:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 72 transitions. [2020-07-01 12:32:55,464 INFO L711 BuchiCegarLoop]: Abstraction has 43 states and 72 transitions. [2020-07-01 12:32:55,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:32:55,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:32:55,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:32:55,468 INFO L87 Difference]: Start difference. First operand 43 states and 72 transitions. Second operand 4 states. [2020-07-01 12:32:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:32:55,509 INFO L93 Difference]: Finished difference Result 44 states and 64 transitions. [2020-07-01 12:32:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:32:55,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 64 transitions. [2020-07-01 12:32:55,512 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2020-07-01 12:32:55,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 64 transitions. [2020-07-01 12:32:55,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2020-07-01 12:32:55,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2020-07-01 12:32:55,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 64 transitions. [2020-07-01 12:32:55,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:32:55,514 INFO L688 BuchiCegarLoop]: Abstraction has 44 states and 64 transitions. [2020-07-01 12:32:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 64 transitions. [2020-07-01 12:32:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-01 12:32:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-01 12:32:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2020-07-01 12:32:55,518 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2020-07-01 12:32:55,518 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2020-07-01 12:32:55,518 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:32:55,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 58 transitions. [2020-07-01 12:32:55,519 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2020-07-01 12:32:55,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:55,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:55,520 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 12:32:55,520 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 12:32:55,520 INFO L794 eck$LassoCheckResult]: Stem: 383#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 384#L11-2 [46] L11-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 407#L12 [43] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_11) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} AuxVars[] AssignedVars[] 385#L16 [2020-07-01 12:32:55,520 INFO L796 eck$LassoCheckResult]: Loop: 385#L16 [32] L16-->L16-2: Formula: (and (= 0 (+ v_ULTIMATE.start_main_~i~0_6 v_ULTIMATE.start_main_~i~0_8 1)) (< v_ULTIMATE.start_main_~w~0_6 v_ULTIMATE.start_main_~i~0_8)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 386#L16-2 [38] L16-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~w~0_8 (+ v_ULTIMATE.start_main_~w~0_9 1)) InVars {ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~w~0] 392#L11-2 [45] L11-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 419#L12 [43] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_11) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} AuxVars[] AssignedVars[] 385#L16 [2020-07-01 12:32:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,521 INFO L82 PathProgramCache]: Analyzing trace with hash 61051, now seen corresponding path program 1 times [2020-07-01 12:32:55,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610641197] [2020-07-01 12:32:55,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,528 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:55,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1914789, now seen corresponding path program 1 times [2020-07-01 12:32:55,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703556557] [2020-07-01 12:32:55,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:55,549 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 12:32:55,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703556557] [2020-07-01 12:32:55,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:32:55,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:32:55,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346385071] [2020-07-01 12:32:55,550 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 12:32:55,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:32:55,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:32:55,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:32:55,551 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. cyclomatic complexity: 23 Second operand 4 states. [2020-07-01 12:32:55,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:32:55,575 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2020-07-01 12:32:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:32:55,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 69 transitions. [2020-07-01 12:32:55,578 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2020-07-01 12:32:55,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 49 states and 65 transitions. [2020-07-01 12:32:55,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-07-01 12:32:55,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-07-01 12:32:55,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2020-07-01 12:32:55,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:32:55,579 INFO L688 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2020-07-01 12:32:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2020-07-01 12:32:55,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2020-07-01 12:32:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-01 12:32:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2020-07-01 12:32:55,583 INFO L711 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-07-01 12:32:55,583 INFO L591 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-07-01 12:32:55,583 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 12:32:55,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 57 transitions. [2020-07-01 12:32:55,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-07-01 12:32:55,585 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:55,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:55,585 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 12:32:55,585 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 12:32:55,586 INFO L794 eck$LassoCheckResult]: Stem: 483#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 484#L11-2 [46] L11-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 511#L12 [43] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_11) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} AuxVars[] AssignedVars[] 485#L16 [2020-07-01 12:32:55,586 INFO L796 eck$LassoCheckResult]: Loop: 485#L16 [44] L16-->L16-2: Formula: (and (>= v_ULTIMATE.start_main_~w~0_7 v_ULTIMATE.start_main_~i~0_10) (= v_ULTIMATE.start_main_~i~0_9 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 487#L16-2 [38] L16-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~w~0_8 (+ v_ULTIMATE.start_main_~w~0_9 1)) InVars {ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~w~0] 523#L11-2 [46] L11-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 498#L12 [43] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_11) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} AuxVars[] AssignedVars[] 485#L16 [2020-07-01 12:32:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,586 INFO L82 PathProgramCache]: Analyzing trace with hash 61051, now seen corresponding path program 2 times [2020-07-01 12:32:55,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149916079] [2020-07-01 12:32:55,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,594 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2272312, now seen corresponding path program 1 times [2020-07-01 12:32:55,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958022874] [2020-07-01 12:32:55,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:55,609 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 12:32:55,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958022874] [2020-07-01 12:32:55,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:32:55,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:32:55,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619609145] [2020-07-01 12:32:55,610 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 12:32:55,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:32:55,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:32:55,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:32:55,610 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-07-01 12:32:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:32:55,623 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-07-01 12:32:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:32:55,624 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 58 transitions. [2020-07-01 12:32:55,625 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-07-01 12:32:55,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 57 transitions. [2020-07-01 12:32:55,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2020-07-01 12:32:55,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-07-01 12:32:55,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 57 transitions. [2020-07-01 12:32:55,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:32:55,627 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-07-01 12:32:55,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 57 transitions. [2020-07-01 12:32:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-01 12:32:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-01 12:32:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2020-07-01 12:32:55,630 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 53 transitions. [2020-07-01 12:32:55,630 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 53 transitions. [2020-07-01 12:32:55,630 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 12:32:55,630 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 53 transitions. [2020-07-01 12:32:55,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-07-01 12:32:55,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:55,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:55,632 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 12:32:55,632 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 12:32:55,632 INFO L794 eck$LassoCheckResult]: Stem: 575#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 576#L11-2 [46] L11-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 605#L12 [43] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_11) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} AuxVars[] AssignedVars[] 577#L16 [2020-07-01 12:32:55,632 INFO L796 eck$LassoCheckResult]: Loop: 577#L16 [44] L16-->L16-2: Formula: (and (>= v_ULTIMATE.start_main_~w~0_7 v_ULTIMATE.start_main_~i~0_10) (= v_ULTIMATE.start_main_~i~0_9 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 579#L16-2 [38] L16-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~w~0_8 (+ v_ULTIMATE.start_main_~w~0_9 1)) InVars {ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~w~0] 613#L11-2 [45] L11-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 612#L12 [43] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_11) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} AuxVars[] AssignedVars[] 577#L16 [2020-07-01 12:32:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,633 INFO L82 PathProgramCache]: Analyzing trace with hash 61051, now seen corresponding path program 3 times [2020-07-01 12:32:55,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156083212] [2020-07-01 12:32:55,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,640 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2272281, now seen corresponding path program 1 times [2020-07-01 12:32:55,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078867727] [2020-07-01 12:32:55,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:32:55,658 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 12:32:55,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078867727] [2020-07-01 12:32:55,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:32:55,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:32:55,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722897897] [2020-07-01 12:32:55,659 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 12:32:55,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:32:55,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:32:55,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:32:55,660 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. cyclomatic complexity: 16 Second operand 3 states. [2020-07-01 12:32:55,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:32:55,673 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-07-01 12:32:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:32:55,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 50 transitions. [2020-07-01 12:32:55,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 12:32:55,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 28 states and 33 transitions. [2020-07-01 12:32:55,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-07-01 12:32:55,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-07-01 12:32:55,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 33 transitions. [2020-07-01 12:32:55,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:32:55,677 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-07-01 12:32:55,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 33 transitions. [2020-07-01 12:32:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2020-07-01 12:32:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-01 12:32:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-07-01 12:32:55,679 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-07-01 12:32:55,679 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-07-01 12:32:55,679 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 12:32:55,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 24 transitions. [2020-07-01 12:32:55,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 12:32:55,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:32:55,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:32:55,680 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 12:32:55,681 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2020-07-01 12:32:55,681 INFO L794 eck$LassoCheckResult]: Stem: 667#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L11-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~w~0_1 5)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~w~0] 668#L11-2 [45] L11-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 679#L12 [34] L12-->L16-2: Formula: (and (< (+ v_ULTIMATE.start_main_~w~0_10 v_ULTIMATE.start_main_~i~0_15) 0) (= 1 (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~i~0_13))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 670#L16-2 [2020-07-01 12:32:55,681 INFO L796 eck$LassoCheckResult]: Loop: 670#L16-2 [38] L16-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~w~0_8 (+ v_ULTIMATE.start_main_~w~0_9 1)) InVars {ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~w~0] 673#L11-2 [46] L11-2-->L12: Formula: (< 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 675#L12 [43] L12-->L16: Formula: (>= (+ v_ULTIMATE.start_main_~i~0_16 v_ULTIMATE.start_main_~w~0_11) 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_11} AuxVars[] AssignedVars[] 663#L16 [32] L16-->L16-2: Formula: (and (= 0 (+ v_ULTIMATE.start_main_~i~0_6 v_ULTIMATE.start_main_~i~0_8 1)) (< v_ULTIMATE.start_main_~w~0_6 v_ULTIMATE.start_main_~i~0_8)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 664#L16-2 [38] L16-2-->L11-2: Formula: (= v_ULTIMATE.start_main_~w~0_8 (+ v_ULTIMATE.start_main_~w~0_9 1)) InVars {ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_9} OutVars{ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~w~0] 681#L11-2 [45] L11-2-->L12: Formula: (> 0 v_ULTIMATE.start_main_~i~0_12) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} AuxVars[] AssignedVars[] 669#L12 [34] L12-->L16-2: Formula: (and (< (+ v_ULTIMATE.start_main_~w~0_10 v_ULTIMATE.start_main_~i~0_15) 0) (= 1 (+ v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~i~0_13))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13, ULTIMATE.start_main_~w~0=v_ULTIMATE.start_main_~w~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 670#L16-2 [2020-07-01 12:32:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,682 INFO L82 PathProgramCache]: Analyzing trace with hash 61011, now seen corresponding path program 1 times [2020-07-01 12:32:55,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468313620] [2020-07-01 12:32:55,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,690 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:55,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1829111843, now seen corresponding path program 1 times [2020-07-01 12:32:55,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420993056] [2020-07-01 12:32:55,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,701 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:55,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:32:55,702 INFO L82 PathProgramCache]: Analyzing trace with hash 819046731, now seen corresponding path program 1 times [2020-07-01 12:32:55,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:32:55,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689543671] [2020-07-01 12:32:55,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:32:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:32:55,717 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:32:55,754 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:55,754 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:55,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:55,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:55,755 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:32:55,755 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,755 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:55,755 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:55,755 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 12:32:55,755 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:55,755 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:55,757 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 12:32:55,759 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 12:32:55,768 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 12:32:55,809 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:55,809 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,833 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,833 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,866 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:32:55,901 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,944 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=4, ULTIMATE.start_main_~w~0=-5} Honda state: {ULTIMATE.start_main_~i~0=4, ULTIMATE.start_main_~w~0=-5} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~w~0=0}, {ULTIMATE.start_main_~i~0=1, ULTIMATE.start_main_~w~0=1}, {ULTIMATE.start_main_~i~0=1, ULTIMATE.start_main_~w~0=1}] Lambdas: [0, 0, 1] Nus: [0, 1] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:55,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:55,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:55,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:55,981 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 12:32:56,030 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:32:56,030 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:32:56,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:32:56,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:32:56,031 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:32:56,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:56,031 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:32:56,031 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:32:56,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Lasso [2020-07-01 12:32:56,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:32:56,032 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:32:56,033 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 12:32:56,035 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 12:32:56,037 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 12:32:56,040 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 12:32:56,052 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 12:32:56,109 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:32:56,109 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:56,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:56,113 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:56,116 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:56,116 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:56,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:56,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:56,152 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:56,153 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:56,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:56,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:56,188 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:56,188 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_6=1} Honda state: {v_rep~unnamed0~0~true_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:56,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:56,220 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:56,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:32:56,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:56,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:56,349 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~w~0=0, ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~w~0=5, ULTIMATE.start_main_~i~0=22} Generalized eigenvectors: [{ULTIMATE.start_main_~w~0=2, ULTIMATE.start_main_~i~0=2}, {ULTIMATE.start_main_~w~0=0, ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~w~0=0, ULTIMATE.start_main_~i~0=0}] Lambdas: [1, 8, 11] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:32:56,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:32:56,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:32:56,385 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:32:56,386 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 12:32:56,422 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,423 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,424 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,424 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,424 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,425 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:32:56 BasicIcfg [2020-07-01 12:32:56,436 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:32:56,438 INFO L168 Benchmark]: Toolchain (without parser) took 4060.66 ms. Allocated memory was 514.9 MB in the beginning and 599.8 MB in the end (delta: 84.9 MB). Free memory was 438.5 MB in the beginning and 518.0 MB in the end (delta: -79.5 MB). Peak memory consumption was 130.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,439 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 514.9 MB. Free memory is still 458.5 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:32:56,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.18 ms. Allocated memory was 514.9 MB in the beginning and 563.6 MB in the end (delta: 48.8 MB). Free memory was 438.5 MB in the beginning and 531.1 MB in the end (delta: -92.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.79 ms. Allocated memory is still 563.6 MB. Free memory was 531.1 MB in the beginning and 529.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,440 INFO L168 Benchmark]: Boogie Preprocessor took 20.65 ms. Allocated memory is still 563.6 MB. Free memory was 529.0 MB in the beginning and 528.3 MB in the end (delta: 673.7 kB). Peak memory consumption was 673.7 kB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,441 INFO L168 Benchmark]: RCFGBuilder took 248.01 ms. Allocated memory is still 563.6 MB. Free memory was 528.3 MB in the beginning and 516.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,442 INFO L168 Benchmark]: BlockEncodingV2 took 74.85 ms. Allocated memory is still 563.6 MB. Free memory was 516.1 MB in the beginning and 510.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,442 INFO L168 Benchmark]: TraceAbstraction took 147.04 ms. Allocated memory is still 563.6 MB. Free memory was 510.1 MB in the beginning and 501.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,443 INFO L168 Benchmark]: BuchiAutomizer took 3228.12 ms. Allocated memory was 563.6 MB in the beginning and 599.8 MB in the end (delta: 36.2 MB). Free memory was 501.1 MB in the beginning and 518.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 144.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:32:56,446 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 12 edges - StatisticsResult: Encoded RCFG 5 locations, 8 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 458.5 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 300.18 ms. Allocated memory was 514.9 MB in the beginning and 563.6 MB in the end (delta: 48.8 MB). Free memory was 438.5 MB in the beginning and 531.1 MB in the end (delta: -92.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.79 ms. Allocated memory is still 563.6 MB. Free memory was 531.1 MB in the beginning and 529.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.65 ms. Allocated memory is still 563.6 MB. Free memory was 529.0 MB in the beginning and 528.3 MB in the end (delta: 673.7 kB). Peak memory consumption was 673.7 kB. Max. memory is 50.3 GB. * RCFGBuilder took 248.01 ms. Allocated memory is still 563.6 MB. Free memory was 528.3 MB in the beginning and 516.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 74.85 ms. Allocated memory is still 563.6 MB. Free memory was 516.1 MB in the beginning and 510.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 147.04 ms. Allocated memory is still 563.6 MB. Free memory was 510.1 MB in the beginning and 501.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 3228.12 ms. Allocated memory was 563.6 MB in the beginning and 599.8 MB in the end (delta: 36.2 MB). Free memory was 501.1 MB in the beginning and 518.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 144.7 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false * 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: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 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=5occurred 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 6 terminating modules (4 trivial, 0 deterministic, 2 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function -1 * i and consists of 9 locations. One nondeterministic module has affine ranking function -1 * w and consists of 8 locations. 4 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 19 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 56 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 42 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 23 SDtfs, 61 SDslu, 12 SDs, 0 SdLazy, 207 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax155 hnf100 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp100 dnf100 smp100 tf105 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 11]: Nontermination argument in form of an infinite program execution. [2020-07-01 12:32:56,455 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,456 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,456 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,456 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,457 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,457 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,457 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,457 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,458 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,458 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2020-07-01 12:32:56,458 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2020-07-01 12:32:56,459 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false Nontermination argument in form of an infinite execution State at position 0 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ddff307=0, \result=0, w=0, ~unnamed0~0~true=1, ~unnamed0~0~false=0, i=0} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ddff307=0, \result=0, w=5, ~unnamed0~0~true=1, ~unnamed0~0~false=0, i=22} For i>1, the state at position i is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ddff307=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, w=5 + sum_{k=0}^i 2, ~unnamed0~0~true=1 + sum_{k=0}^i 0, ~unnamed0~0~false=0 + sum_{k=0}^i 0, i=22 + sum_{k=0}^i 2} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [1, 8, 11] Mus: [0, 0] - NonterminatingLassoResult [Line: 12]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int w; [L8] i = __VERIFIER_nondet_int() [L9] w = 5 [L11] COND TRUE i != 0 [L12] COND TRUE i < -w [L13] i = i-1 [L14] i = i*(-1) Loop: [L23] w = w+1 [L11] COND TRUE i != 0 [L12] COND FALSE !(i < -w) [L16] COND TRUE i > w [L17] i = i+1 [L18] i = i*(-1) [L23] w = w+1 [L11] COND TRUE i != 0 [L12] COND TRUE i < -w [L13] i = i-1 [L14] i = i*(-1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 12:32:49.125 ----------------------------------------------- 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_AhqvO9/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:32:56.686 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check