/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:36:36,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:36:36,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:36:36,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:36:36,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:36:36,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:36:36,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:36:36,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:36:36,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:36:36,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:36:36,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:36:36,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:36:36,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:36:36,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:36:36,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:36:36,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:36:36,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:36:36,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:36:36,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:36:36,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:36:36,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:36:36,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:36:36,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:36:36,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:36:36,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:36:36,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:36:36,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:36:36,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:36:36,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:36:36,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:36:36,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:36:36,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:36:36,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:36:36,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:36:36,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:36:36,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:36:36,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:36:36,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:36:36,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:36:36,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:36:36,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:36:36,425 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:36:36,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:36:36,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:36:36,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:36:36,440 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:36:36,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:36:36,440 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:36:36,440 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:36:36,440 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:36:36,440 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:36:36,441 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:36:36,441 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:36:36,441 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:36:36,441 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:36:36,441 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:36:36,441 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:36,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:36:36,442 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:36:36,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:36:36,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:36:36,442 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:36:36,442 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:36:36,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:36:36,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:36:36,443 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:36:36,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:36:36,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:36:36,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:36:36,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:36:36,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:36:36,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:36:36,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:36:36,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:36:36,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:36:36,632 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:36:36,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:36:36,699 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_7HxYU5/tmp/48d018a1653544788b4f731aa459267f/FLAG1385b8394 [2020-07-01 11:36:37,031 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:36:37,031 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:36:37,038 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_7HxYU5/tmp/48d018a1653544788b4f731aa459267f/FLAG1385b8394 [2020-07-01 11:36:37,428 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_7HxYU5/tmp/48d018a1653544788b4f731aa459267f [2020-07-01 11:36:37,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:36:37,441 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:36:37,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:36:37,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:36:37,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:36:37,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb860a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37, skipping insertion in model container [2020-07-01 11:36:37,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:36:37,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:36:37,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:36:37,701 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:36:37,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:36:37,733 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:36:37,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37 WrapperNode [2020-07-01 11:36:37,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:36:37,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:36:37,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:36:37,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:36:37,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:36:37,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:36:37,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:36:37,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:36:37,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (1/1) ... [2020-07-01 11:36:37,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:36:37,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:36:37,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:36:37,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:36:37,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (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 11:36:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:36:37,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:36:38,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:36:38,027 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-01 11:36:38,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:36:38 BoogieIcfgContainer [2020-07-01 11:36:38,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:36:38,032 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:36:38,032 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:36:38,034 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:36:38,035 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:36:38" (1/1) ... [2020-07-01 11:36:38,048 INFO L313 BlockEncoder]: Initial Icfg 11 locations, 17 edges [2020-07-01 11:36:38,050 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:36:38,050 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:36:38,051 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:36:38,051 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:36:38,053 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:36:38,054 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:36:38,054 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:36:38,069 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:36:38,086 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 11:36:38,090 INFO L70 emoveInfeasibleEdges]: Removed 3 edges and 0 locations because of local infeasibility [2020-07-01 11:36:38,092 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:36:38,107 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-07-01 11:36:38,109 INFO L70 RemoveSinkStates]: Removed 5 edges and 2 locations by removing sink states [2020-07-01 11:36:38,111 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:36:38,111 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:36:38,117 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:36:38,118 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:36:38,118 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:36:38,118 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:36:38,119 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:36:38,119 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:36:38,119 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2020-07-01 11:36:38,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:36:38 BasicIcfg [2020-07-01 11:36:38,120 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:36:38,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:36:38,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:36:38,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:36:38,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:36:37" (1/4) ... [2020-07-01 11:36:38,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37729ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:36:38, skipping insertion in model container [2020-07-01 11:36:38,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (2/4) ... [2020-07-01 11:36:38,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37729ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:36:38, skipping insertion in model container [2020-07-01 11:36:38,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:36:38" (3/4) ... [2020-07-01 11:36:38,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37729ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:36:38, skipping insertion in model container [2020-07-01 11:36:38,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:36:38" (4/4) ... [2020-07-01 11:36:38,130 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:36:38,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:36:38,148 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:36:38,162 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:36:38,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:36:38,186 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:36:38,186 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:36:38,186 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:36:38,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:36:38,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:36:38,187 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:36:38,187 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:36:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 11:36:38,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:36:38,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 11:36:38,272 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:36:38,273 INFO L271 CegarLoopResult]: At program point L28-2(lines 28 30) the Hoare annotation is: true [2020-07-01 11:36:38,273 INFO L271 CegarLoopResult]: At program point L25-2(lines 25 32) the Hoare annotation is: true [2020-07-01 11:36:38,273 INFO L271 CegarLoopResult]: At program point L23-2(lines 23 34) the Hoare annotation is: true [2020-07-01 11:36:38,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:36:38 BasicIcfg [2020-07-01 11:36:38,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:36:38,283 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:36:38,283 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:36:38,286 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:36:38,287 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:36:38,287 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:36:37" (1/5) ... [2020-07-01 11:36:38,288 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ddc7598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:36:38, skipping insertion in model container [2020-07-01 11:36:38,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:36:38,288 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:36:37" (2/5) ... [2020-07-01 11:36:38,289 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ddc7598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:36:38, skipping insertion in model container [2020-07-01 11:36:38,289 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:36:38,289 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:36:38" (3/5) ... [2020-07-01 11:36:38,289 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ddc7598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:36:38, skipping insertion in model container [2020-07-01 11:36:38,289 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:36:38,290 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:36:38" (4/5) ... [2020-07-01 11:36:38,290 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ddc7598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:36:38, skipping insertion in model container [2020-07-01 11:36:38,290 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:36:38,290 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:36:38" (5/5) ... [2020-07-01 11:36:38,292 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:36:38,318 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:36:38,318 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:36:38,318 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:36:38,319 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:36:38,319 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:36:38,319 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:36:38,319 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:36:38,319 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:36:38,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 11:36:38,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:36:38,339 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:36:38,339 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:36:38,344 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:36:38,344 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:36:38,345 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:36:38,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 11:36:38,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:36:38,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:36:38,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:36:38,346 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:36:38,346 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:36:38,351 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue [78] ULTIMATE.startENTRY-->L23-2: Formula: (and (= 0 v_ULTIMATE.start_main_~i~0_16) (<= 0 v_ULTIMATE.start_main_~n~0_10) (<= 0 v_ULTIMATE.start_main_~m~0_11) (<= 0 v_ULTIMATE.start_main_~N~0_11)) InVars {} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_12, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_6|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_6|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_11, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_11, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res] 4#L23-2true [2020-07-01 11:36:38,351 INFO L796 eck$LassoCheckResult]: Loop: 4#L23-2true [57] L23-2-->L25-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_11 v_ULTIMATE.start_main_~n~0_9) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 6#L25-2true [75] L25-2-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 1)) (<= v_ULTIMATE.start_main_~m~0_10 v_ULTIMATE.start_main_~j~0_10)) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 4#L23-2true [2020-07-01 11:36:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:38,358 INFO L82 PathProgramCache]: Analyzing trace with hash 109, now seen corresponding path program 1 times [2020-07-01 11:36:38,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:38,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208852556] [2020-07-01 11:36:38,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:38,438 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:38,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:38,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2803, now seen corresponding path program 1 times [2020-07-01 11:36:38,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:38,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972537963] [2020-07-01 11:36:38,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:38,456 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:38,458 INFO L82 PathProgramCache]: Analyzing trace with hash 106591, now seen corresponding path program 1 times [2020-07-01 11:36:38,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:38,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008478919] [2020-07-01 11:36:38,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:38,473 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:38,521 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:38,522 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:38,522 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:38,522 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:38,522 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:36:38,522 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:38,523 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:38,523 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:38,523 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:36:38,523 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:38,523 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:38,543 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 11:36:38,553 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 11:36:38,558 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 11:36:38,566 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 11:36:38,663 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:38,663 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 11:36:38,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:38,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:38,682 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:36:38,682 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 11:36:38,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:38,717 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:38,721 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:36:38,721 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 11:36:38,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:38,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:38,761 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:36:38,761 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 11:36:38,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:38,795 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:38,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:36:38,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:39,007 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:36:39,010 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:39,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:39,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:39,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:39,010 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:36:39,011 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:39,011 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:39,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:39,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:36:39,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:39,011 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:39,013 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 11:36:39,018 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 11:36:39,022 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 11:36:39,030 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 11:36:39,127 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:39,133 INFO L489 LassoAnalysis]: Using template 'affine'. 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 11:36:39,140 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 11:36:39,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:39,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:39,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:39,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:39,150 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:36:39,150 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:36:39,157 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 11:36:39,194 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 11:36:39,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:39,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:39,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:39,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:39,201 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:36:39,201 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:36:39,207 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 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 11:36:39,242 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 11:36:39,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:39,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:36:39,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:39,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:39,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:39,246 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:36:39,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:36:39,249 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:39,299 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 11:36:39,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:39,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:36:39,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:39,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:39,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:39,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:36:39,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:36:39,307 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:36:39,319 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:36:39,319 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:39,326 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:36:39,326 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:36:39,326 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:36:39,327 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 11:36:39,361 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:36:39,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:39,400 INFO L264 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:36:39,401 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:39,411 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:36:39,411 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:39,431 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 11:36:39,459 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:36:39,464 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:36:39,465 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 3 states. [2020-07-01 11:36:39,502 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 3 states. Result 10 states and 16 transitions. Complement of second has 4 states. [2020-07-01 11:36:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:36:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:36:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-01 11:36:39,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:36:39,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:39,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:36:39,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:39,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:36:39,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:39,516 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 16 transitions. [2020-07-01 11:36:39,517 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-07-01 11:36:39,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 14 transitions. [2020-07-01 11:36:39,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 11:36:39,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 11:36:39,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2020-07-01 11:36:39,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:36:39,524 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-01 11:36:39,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2020-07-01 11:36:39,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-07-01 11:36:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 11:36:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2020-07-01 11:36:39,552 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-07-01 11:36:39,552 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-07-01 11:36:39,552 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:36:39,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2020-07-01 11:36:39,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:36:39,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:36:39,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:36:39,554 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:36:39,554 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:36:39,554 INFO L794 eck$LassoCheckResult]: Stem: 53#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L23-2: Formula: (and (= 0 v_ULTIMATE.start_main_~i~0_16) (<= 0 v_ULTIMATE.start_main_~n~0_10) (<= 0 v_ULTIMATE.start_main_~m~0_11) (<= 0 v_ULTIMATE.start_main_~N~0_11)) InVars {} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_12, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_6|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_6|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_11, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_11, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res] 54#L23-2 [57] L23-2-->L25-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_11 v_ULTIMATE.start_main_~n~0_9) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 52#L25-2 [62] L25-2-->L28-2: Formula: (and (= v_ULTIMATE.start_main_~k~0_7 v_ULTIMATE.start_main_~i~0_12) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 1)) (< v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~m~0_9)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0] 47#L28-2 [2020-07-01 11:36:39,554 INFO L796 eck$LassoCheckResult]: Loop: 47#L28-2 [52] L28-2-->L28-2: Formula: (and (< v_ULTIMATE.start_main_~k~0_10 v_ULTIMATE.start_main_~N~0_9) (= v_ULTIMATE.start_main_~k~0_9 (+ v_ULTIMATE.start_main_~k~0_10 1))) InVars {ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_10, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_9} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0] 47#L28-2 [2020-07-01 11:36:39,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:39,555 INFO L82 PathProgramCache]: Analyzing trace with hash 106578, now seen corresponding path program 1 times [2020-07-01 11:36:39,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:39,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530955323] [2020-07-01 11:36:39,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:39,569 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:39,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:39,570 INFO L82 PathProgramCache]: Analyzing trace with hash 83, now seen corresponding path program 1 times [2020-07-01 11:36:39,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:39,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148856993] [2020-07-01 11:36:39,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:39,577 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:39,577 INFO L82 PathProgramCache]: Analyzing trace with hash 3303970, now seen corresponding path program 1 times [2020-07-01 11:36:39,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:39,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021269626] [2020-07-01 11:36:39,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:39,592 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:39,603 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:39,603 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:39,604 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:39,604 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:39,604 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:36:39,604 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:39,604 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:39,604 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:39,604 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:36:39,604 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:39,604 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:39,606 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 11:36:39,610 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 11:36:39,617 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 11:36:39,669 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:39,670 INFO L404 LassoAnalysis]: Checking for nontermination... 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 11:36:39,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:39,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:39,685 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:36:39,685 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 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 11:36:39,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:39,722 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:39,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:36:39,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:39,929 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:36:39,931 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:39,931 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:39,931 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:39,932 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:39,932 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:36:39,932 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:39,932 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:39,932 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:39,932 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:36:39,932 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:39,932 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:39,934 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 11:36:39,938 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 11:36:39,946 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 11:36:39,991 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:39,992 INFO L489 LassoAnalysis]: Using template 'affine'. 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 11:36:40,000 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 11:36:40,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:40,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:40,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:40,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:40,007 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:36:40,007 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:36:40,012 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 11:36:40,049 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 11:36:40,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:40,051 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:36:40,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:40,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:40,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:40,053 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:36:40,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:36:40,056 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:36:40,059 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:36:40,060 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 11:36:40,065 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:36:40,065 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:36:40,065 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:36:40,065 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~N~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~N~0 Supporting invariants [] [2020-07-01 11:36:40,097 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:36:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:40,121 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:36:40,122 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:40,126 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:36:40,126 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:40,126 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 11:36:40,127 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:36:40,127 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-07-01 11:36:40,127 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 2 states. [2020-07-01 11:36:40,140 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 2 states. Result 12 states and 20 transitions. Complement of second has 4 states. [2020-07-01 11:36:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:36:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 11:36:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-01 11:36:40,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 11:36:40,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:40,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 4 letters. Loop has 1 letters. [2020-07-01 11:36:40,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:40,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:36:40,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:40,144 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 20 transitions. [2020-07-01 11:36:40,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:36:40,146 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 16 transitions. [2020-07-01 11:36:40,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 11:36:40,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 11:36:40,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 16 transitions. [2020-07-01 11:36:40,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:36:40,146 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 16 transitions. [2020-07-01 11:36:40,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 16 transitions. [2020-07-01 11:36:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-01 11:36:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 11:36:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-07-01 11:36:40,148 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-01 11:36:40,148 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-01 11:36:40,148 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:36:40,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2020-07-01 11:36:40,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:36:40,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:36:40,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:36:40,150 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:36:40,150 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:36:40,150 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L23-2: Formula: (and (= 0 v_ULTIMATE.start_main_~i~0_16) (<= 0 v_ULTIMATE.start_main_~n~0_10) (<= 0 v_ULTIMATE.start_main_~m~0_11) (<= 0 v_ULTIMATE.start_main_~N~0_11)) InVars {} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_12, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_6|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_6|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_11, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_11, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res] 106#L23-2 [57] L23-2-->L25-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_11 v_ULTIMATE.start_main_~n~0_9) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 104#L25-2 [62] L25-2-->L28-2: Formula: (and (= v_ULTIMATE.start_main_~k~0_7 v_ULTIMATE.start_main_~i~0_12) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 1)) (< v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~m~0_9)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0] 98#L28-2 [2020-07-01 11:36:40,150 INFO L796 eck$LassoCheckResult]: Loop: 98#L28-2 [77] L28-2-->L25-2: Formula: (and (<= v_ULTIMATE.start_main_~N~0_10 v_ULTIMATE.start_main_~k~0_11) (= v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~k~0_11)) InVars {ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_11, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_10} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_11, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 100#L25-2 [62] L25-2-->L28-2: Formula: (and (= v_ULTIMATE.start_main_~k~0_7 v_ULTIMATE.start_main_~i~0_12) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 1)) (< v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~m~0_9)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0] 98#L28-2 [2020-07-01 11:36:40,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash 106578, now seen corresponding path program 2 times [2020-07-01 11:36:40,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:40,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352136498] [2020-07-01 11:36:40,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,163 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:40,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:40,164 INFO L82 PathProgramCache]: Analyzing trace with hash 3410, now seen corresponding path program 1 times [2020-07-01 11:36:40,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:40,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364752153] [2020-07-01 11:36:40,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,176 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:40,176 INFO L82 PathProgramCache]: Analyzing trace with hash 102423907, now seen corresponding path program 1 times [2020-07-01 11:36:40,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:40,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398334096] [2020-07-01 11:36:40,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,193 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:40,221 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:40,221 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:40,221 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:40,221 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:40,222 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:36:40,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:40,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:40,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:40,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:36:40,222 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:40,222 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:40,224 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 11:36:40,233 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 11:36:40,237 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 11:36:40,243 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 11:36:40,303 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:40,303 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) [2020-07-01 11:36:40,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:40,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:40,316 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:36:40,316 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=-8, ULTIMATE.start_main_~i~0=-8, ULTIMATE.start_main_~N~0=-8} Honda state: {ULTIMATE.start_main_~k~0=-8, ULTIMATE.start_main_~i~0=-8, ULTIMATE.start_main_~N~0=-8} 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 11:36:40,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:40,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:40,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:36:40,355 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 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 11:36:40,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:40,390 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 11:36:40,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:36:40,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:40,578 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:36:40,580 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:40,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:40,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:40,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:40,581 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:36:40,581 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:40,581 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:40,581 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:40,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:36:40,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:40,581 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:40,583 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 11:36:40,593 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 11:36:40,600 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 11:36:40,608 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 11:36:40,675 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:40,675 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:40,680 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 11:36:40,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:40,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:36:40,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:40,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:40,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:40,684 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:36:40,684 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:36:40,686 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:40,738 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 11:36:40,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:40,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:40,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:40,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:40,745 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:36:40,745 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:36:40,751 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:40,783 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 11:36:40,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:40,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:36:40,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:40,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:40,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:40,787 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:36:40,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:36:40,789 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:36:40,794 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 11:36:40,794 INFO L444 ModelExtractionUtils]: 0 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:40,797 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:36:40,797 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:36:40,798 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:36:40,798 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-07-01 11:36:40,828 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:36:40,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:40,849 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:36:40,850 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:40,855 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:36:40,855 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:40,856 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 11:36:40,856 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:36:40,856 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-07-01 11:36:40,856 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-07-01 11:36:40,868 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 17 states and 29 transitions. Complement of second has 4 states. [2020-07-01 11:36:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:36:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:36:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-07-01 11:36:40,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:36:40,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:40,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 11:36:40,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:40,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 11:36:40,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:40,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 29 transitions. [2020-07-01 11:36:40,873 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-07-01 11:36:40,873 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 28 transitions. [2020-07-01 11:36:40,874 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 11:36:40,874 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 11:36:40,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 28 transitions. [2020-07-01 11:36:40,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:36:40,874 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 28 transitions. [2020-07-01 11:36:40,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 28 transitions. [2020-07-01 11:36:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2020-07-01 11:36:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-01 11:36:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 24 transitions. [2020-07-01 11:36:40,876 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 24 transitions. [2020-07-01 11:36:40,876 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 24 transitions. [2020-07-01 11:36:40,876 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:36:40,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 24 transitions. [2020-07-01 11:36:40,877 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-07-01 11:36:40,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:36:40,878 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:36:40,878 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:36:40,878 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 11:36:40,878 INFO L794 eck$LassoCheckResult]: Stem: 168#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L23-2: Formula: (and (= 0 v_ULTIMATE.start_main_~i~0_16) (<= 0 v_ULTIMATE.start_main_~n~0_10) (<= 0 v_ULTIMATE.start_main_~m~0_11) (<= 0 v_ULTIMATE.start_main_~N~0_11)) InVars {} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_12, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_6|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_6|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_11, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_11, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res] 169#L23-2 [57] L23-2-->L25-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_11 v_ULTIMATE.start_main_~n~0_9) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 167#L25-2 [62] L25-2-->L28-2: Formula: (and (= v_ULTIMATE.start_main_~k~0_7 v_ULTIMATE.start_main_~i~0_12) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 1)) (< v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~m~0_9)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0] 158#L28-2 [2020-07-01 11:36:40,879 INFO L796 eck$LassoCheckResult]: Loop: 158#L28-2 [77] L28-2-->L25-2: Formula: (and (<= v_ULTIMATE.start_main_~N~0_10 v_ULTIMATE.start_main_~k~0_11) (= v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~k~0_11)) InVars {ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_11, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_10} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_11, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 162#L25-2 [75] L25-2-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 1)) (<= v_ULTIMATE.start_main_~m~0_10 v_ULTIMATE.start_main_~j~0_10)) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 163#L23-2 [57] L23-2-->L25-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_11 v_ULTIMATE.start_main_~n~0_9) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 164#L25-2 [62] L25-2-->L28-2: Formula: (and (= v_ULTIMATE.start_main_~k~0_7 v_ULTIMATE.start_main_~i~0_12) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 1)) (< v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~m~0_9)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0] 158#L28-2 [2020-07-01 11:36:40,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:40,879 INFO L82 PathProgramCache]: Analyzing trace with hash 106578, now seen corresponding path program 3 times [2020-07-01 11:36:40,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:40,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161710647] [2020-07-01 11:36:40,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,891 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:40,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:40,891 INFO L82 PathProgramCache]: Analyzing trace with hash 3291332, now seen corresponding path program 1 times [2020-07-01 11:36:40,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:40,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304735794] [2020-07-01 11:36:40,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,905 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:40,906 INFO L82 PathProgramCache]: Analyzing trace with hash -354858859, now seen corresponding path program 1 times [2020-07-01 11:36:40,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:40,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90198426] [2020-07-01 11:36:40,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:40,925 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:40,976 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:40,976 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:40,976 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:40,976 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:40,976 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:36:40,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:40,977 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:40,977 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:40,977 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:36:40,977 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:40,977 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:40,978 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 11:36:40,989 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 11:36:40,992 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 11:36:40,999 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 11:36:41,057 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:41,057 INFO L404 LassoAnalysis]: Checking for nontermination... 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 11:36:41,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:41,061 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 11:36:41,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:36:41,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:53,144 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-07-01 11:36:53,147 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:53,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:53,147 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:53,148 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:53,148 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:36:53,148 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:53,148 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:53,148 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:53,148 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:36:53,148 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:53,148 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:53,150 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 11:36:53,160 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 11:36:53,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:36:53,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:36:53,225 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:53,225 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:53,229 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 11:36:53,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:53,231 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:36:53,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:53,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:53,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:53,233 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:36:53,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:36:53,237 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:36:53,241 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 11:36:53,242 INFO L444 ModelExtractionUtils]: 2 out of 6 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:53,249 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:36:53,249 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:36:53,249 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:36:53,249 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2020-07-01 11:36:53,279 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:36:53,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:53,297 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:36:53,298 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:53,303 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:36:53,303 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:53,342 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 11:36:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:53,360 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 11:36:53,360 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:36:53,361 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 11:36:53,361 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 13 states and 24 transitions. cyclomatic complexity: 13 Second operand 5 states. [2020-07-01 11:36:53,492 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 13 states and 24 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 92 transitions. Complement of second has 22 states. [2020-07-01 11:36:53,493 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 11:36:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:36:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 22 transitions. [2020-07-01 11:36:53,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 22 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 11:36:53,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:53,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 22 transitions. Stem has 7 letters. Loop has 4 letters. [2020-07-01 11:36:53,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:53,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 22 transitions. Stem has 3 letters. Loop has 8 letters. [2020-07-01 11:36:53,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:53,497 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 92 transitions. [2020-07-01 11:36:53,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:36:53,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 35 states and 74 transitions. [2020-07-01 11:36:53,503 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 11:36:53,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 11:36:53,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 74 transitions. [2020-07-01 11:36:53,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:36:53,504 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 74 transitions. [2020-07-01 11:36:53,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 74 transitions. [2020-07-01 11:36:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2020-07-01 11:36:53,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-01 11:36:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 47 transitions. [2020-07-01 11:36:53,507 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 47 transitions. [2020-07-01 11:36:53,507 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 47 transitions. [2020-07-01 11:36:53,507 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:36:53,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 47 transitions. [2020-07-01 11:36:53,508 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:36:53,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:36:53,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:36:53,509 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:36:53,509 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:36:53,509 INFO L794 eck$LassoCheckResult]: Stem: 302#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L23-2: Formula: (and (= 0 v_ULTIMATE.start_main_~i~0_16) (<= 0 v_ULTIMATE.start_main_~n~0_10) (<= 0 v_ULTIMATE.start_main_~m~0_11) (<= 0 v_ULTIMATE.start_main_~N~0_11)) InVars {} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_12, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#t~nondet4=|v_ULTIMATE.start_main_#t~nondet4_6|, ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_6|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_11, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_16, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_11, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet4, ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~m~0, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res] 303#L23-2 [57] L23-2-->L25-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_11 v_ULTIMATE.start_main_~n~0_9) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 305#L25-2 [62] L25-2-->L28-2: Formula: (and (= v_ULTIMATE.start_main_~k~0_7 v_ULTIMATE.start_main_~i~0_12) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~j~0_9 1)) (< v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~m~0_9)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0] 290#L28-2 [77] L28-2-->L25-2: Formula: (and (<= v_ULTIMATE.start_main_~N~0_10 v_ULTIMATE.start_main_~k~0_11) (= v_ULTIMATE.start_main_~i~0_15 v_ULTIMATE.start_main_~k~0_11)) InVars {ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_11, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_10} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_11, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 298#L25-2 [2020-07-01 11:36:53,510 INFO L796 eck$LassoCheckResult]: Loop: 298#L25-2 [75] L25-2-->L23-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 1)) (<= v_ULTIMATE.start_main_~m~0_10 v_ULTIMATE.start_main_~j~0_10)) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~m~0=v_ULTIMATE.start_main_~m~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 299#L23-2 [57] L23-2-->L25-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_11 v_ULTIMATE.start_main_~n~0_9) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_9, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 298#L25-2 [2020-07-01 11:36:53,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:53,510 INFO L82 PathProgramCache]: Analyzing trace with hash 3303995, now seen corresponding path program 2 times [2020-07-01 11:36:53,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:53,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955397799] [2020-07-01 11:36:53,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:53,521 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:53,521 INFO L82 PathProgramCache]: Analyzing trace with hash 3343, now seen corresponding path program 2 times [2020-07-01 11:36:53,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:53,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536112307] [2020-07-01 11:36:53,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:53,528 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:53,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1119825719, now seen corresponding path program 2 times [2020-07-01 11:36:53,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:36:53,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322347272] [2020-07-01 11:36:53,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:36:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:36:53,541 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:36:53,566 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:53,566 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:53,566 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:53,566 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:53,566 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:36:53,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:53,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:53,567 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:53,567 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 11:36:53,567 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:53,567 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:53,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:36:53,579 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 11:36:53,582 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 11:36:53,585 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 11:36:53,626 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:53,626 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:53,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:36:53,630 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:36:53,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:36:53,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:36:54,136 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:36:54,138 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:36:54,139 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:36:54,139 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:36:54,139 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:36:54,139 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:36:54,139 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:54,139 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:36:54,139 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:36:54,139 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2020-07-01 11:36:54,139 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:36:54,140 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:36:54,141 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 11:36:54,144 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 11:36:54,149 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 11:36:54,155 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 11:36:54,198 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:36:54,198 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:54,202 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 11:36:54,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:54,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:54,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:54,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:54,207 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:36:54,207 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:36:54,211 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:54,243 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 11:36:54,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:36:54,245 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:36:54,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:36:54,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:36:54,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:36:54,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:36:54,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:36:54,249 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:36:54,253 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:36:54,253 INFO L444 ModelExtractionUtils]: 0 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:36:54,257 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:36:54,257 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:36:54,257 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:36:54,258 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 11:36:54,287 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:36:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:36:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:54,304 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:36:54,305 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:36:54,309 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:36:54,309 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:36:54,317 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 11:36:54,317 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:36:54,317 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 11:36:54,317 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 20 states and 47 transitions. cyclomatic complexity: 32 Second operand 3 states. [2020-07-01 11:36:54,339 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 20 states and 47 transitions. cyclomatic complexity: 32. Second operand 3 states. Result 34 states and 75 transitions. Complement of second has 6 states. [2020-07-01 11:36:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 11:36:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:36:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-07-01 11:36:54,340 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:36:54,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:54,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2020-07-01 11:36:54,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:54,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 4 letters. [2020-07-01 11:36:54,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:36:54,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 75 transitions. [2020-07-01 11:36:54,344 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:36:54,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 0 states and 0 transitions. [2020-07-01 11:36:54,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:36:54,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:36:54,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:36:54,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:36:54,345 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:36:54,345 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:36:54,345 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:36:54,345 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 11:36:54,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:36:54,345 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:36:54,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:36:54,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:36:54 BasicIcfg [2020-07-01 11:36:54,351 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:36:54,354 INFO L168 Benchmark]: Toolchain (without parser) took 16911.68 ms. Allocated memory was 649.6 MB in the beginning and 736.6 MB in the end (delta: 87.0 MB). Free memory was 562.7 MB in the beginning and 495.9 MB in the end (delta: 66.8 MB). Peak memory consumption was 153.8 MB. Max. memory is 50.3 GB. [2020-07-01 11:36:54,354 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 584.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:36:54,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.32 ms. Allocated memory was 649.6 MB in the beginning and 651.2 MB in the end (delta: 1.6 MB). Free memory was 562.7 MB in the beginning and 614.6 MB in the end (delta: -51.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:36:54,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.12 ms. Allocated memory is still 651.2 MB. Free memory was 614.6 MB in the beginning and 611.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:36:54,356 INFO L168 Benchmark]: Boogie Preprocessor took 20.52 ms. Allocated memory is still 651.2 MB. Free memory was 611.9 MB in the beginning and 610.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:36:54,356 INFO L168 Benchmark]: RCFGBuilder took 242.20 ms. Allocated memory is still 651.2 MB. Free memory was 610.5 MB in the beginning and 593.8 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:36:54,357 INFO L168 Benchmark]: BlockEncodingV2 took 88.61 ms. Allocated memory is still 651.2 MB. Free memory was 593.8 MB in the beginning and 587.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:36:54,357 INFO L168 Benchmark]: TraceAbstraction took 160.46 ms. Allocated memory is still 651.2 MB. Free memory was 587.1 MB in the beginning and 577.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:36:54,358 INFO L168 Benchmark]: BuchiAutomizer took 16068.62 ms. Allocated memory was 651.2 MB in the beginning and 736.6 MB in the end (delta: 85.5 MB). Free memory was 577.7 MB in the beginning and 495.9 MB in the end (delta: 81.7 MB). Peak memory consumption was 167.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:36:54,361 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 11 locations, 17 edges - StatisticsResult: Encoded RCFG 4 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 584.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 291.32 ms. Allocated memory was 649.6 MB in the beginning and 651.2 MB in the end (delta: 1.6 MB). Free memory was 562.7 MB in the beginning and 614.6 MB in the end (delta: -51.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.12 ms. Allocated memory is still 651.2 MB. Free memory was 614.6 MB in the beginning and 611.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.52 ms. Allocated memory is still 651.2 MB. Free memory was 611.9 MB in the beginning and 610.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 242.20 ms. Allocated memory is still 651.2 MB. Free memory was 610.5 MB in the beginning and 593.8 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 88.61 ms. Allocated memory is still 651.2 MB. Free memory was 593.8 MB in the beginning and 587.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 160.46 ms. Allocated memory is still 651.2 MB. Free memory was 587.1 MB in the beginning and 577.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 16068.62 ms. Allocated memory was 651.2 MB in the beginning and 736.6 MB in the end (delta: 85.5 MB). Free memory was 577.7 MB in the beginning and 495.9 MB in the end (delta: 81.7 MB). Peak memory consumption was 167.2 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 3 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (0 trivial, 0 deterministic, 5 nondeterministic). One nondeterministic module has affine ranking function n + -1 * i and consists of 3 locations. One nondeterministic module has affine ranking function -1 * k + N and consists of 3 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 3 locations. One nondeterministic module has affine ranking function n + -1 * k and consists of 8 locations. One nondeterministic module has affine ranking function n + -1 * i and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 15.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 4. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 40 SDtfs, 47 SDslu, 7 SDs, 0 SdLazy, 65 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax175 hnf100 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf92 smp100 dnf100 smp100 tf112 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 13.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:36:34.149 ----------------------------------------------- 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_7HxYU5/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:36:55.195 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check