/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/m11.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:47:03,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:47:03,150 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:47:03,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:47:03,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:47:03,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:47:03,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:47:03,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:47:03,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:47:03,178 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:47:03,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:47:03,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:47:03,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:47:03,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:47:03,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:47:03,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:47:03,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:47:03,180 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:47:03,180 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:47:03,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:47:03,180 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:47:03,180 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:47:03,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:47:03,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:47:03,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:47:03,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:47:03,180 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:47:03,180 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:47:03,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:47:03,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:47:03,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:47:03,440 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:47:03,440 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:47:03,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/m11.c.bpl [2025-02-17 22:47:03,443 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/m11.c.bpl' [2025-02-17 22:47:03,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:47:03,460 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:47:03,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:03,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:47:03,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:47:03,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,479 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:47:03,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:47:03,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:47:03,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:47:03,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:47:03,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,487 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,488 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:47:03,496 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:47:03,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:47:03,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:47:03,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/1) ... [2025-02-17 22:47:03,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:03,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:03,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:03,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:47:03,550 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:47:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:47:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:47:03,550 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:47:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:47:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:47:03,550 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:47:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:47:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:47:03,551 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:47:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:47:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:47:03,551 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:47:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:47:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:47:03,551 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-02-17 22:47:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-17 22:47:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-17 22:47:03,551 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-02-17 22:47:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-02-17 22:47:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-02-17 22:47:03,553 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:47:03,589 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:47:03,591 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:47:03,677 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:47:03,677 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:47:03,686 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:47:03,686 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:47:03,686 INFO L201 PluginConnector]: Adding new model m11.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:03 BoogieIcfgContainer [2025-02-17 22:47:03,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:47:03,687 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:47:03,687 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:47:03,691 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:47:03,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:03,691 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m11.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:47:03" (1/2) ... [2025-02-17 22:47:03,693 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8ea9c23 and model type m11.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:47:03, skipping insertion in model container [2025-02-17 22:47:03,693 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:47:03,693 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "m11.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:47:03" (2/2) ... [2025-02-17 22:47:03,694 INFO L363 chiAutomizerObserver]: Analyzing ICFG m11.c.bpl [2025-02-17 22:47:03,771 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-02-17 22:47:03,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 52 transitions, 146 flow [2025-02-17 22:47:03,829 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2025-02-17 22:47:03,832 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-17 22:47:03,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2025-02-17 22:47:03,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 52 transitions, 146 flow [2025-02-17 22:47:03,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 40 transitions, 116 flow [2025-02-17 22:47:03,854 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:47:03,854 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:47:03,855 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:47:03,855 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:47:03,855 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:47:03,855 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:47:03,857 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:47:03,858 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:47:03,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:47:04,897 INFO L131 ngComponentsAnalysis]: Automaton has 2024 accepting balls. 9790 [2025-02-17 22:47:04,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:04,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:04,901 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:04,902 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:04,902 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:47:04,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 10153 states, but on-demand construction may add more states [2025-02-17 22:47:05,098 INFO L131 ngComponentsAnalysis]: Automaton has 2024 accepting balls. 9790 [2025-02-17 22:47:05,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:05,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:05,099 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:47:05,101 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:05,105 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L15: Formula: (= v_f_1 0) InVars {} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[127] L15-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:47:05,105 INFO L754 eck$LassoCheckResult]: Loop: "[100] L32-->L34: Formula: (< v_x5_1 v_w_1) InVars {x5=v_x5_1, w=v_w_1} OutVars{x5=v_x5_1, w=v_w_1} AuxVars[] AssignedVars[]" "[102] L34-->L32: Formula: (= v_x5_2 (+ v_x5_3 1)) InVars {x5=v_x5_3} OutVars{x5=v_x5_2} AuxVars[] AssignedVars[x5]" [2025-02-17 22:47:05,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash 3878, now seen corresponding path program 1 times [2025-02-17 22:47:05,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:05,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070994095] [2025-02-17 22:47:05,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:05,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:05,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:05,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:05,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:05,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:05,174 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:05,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:05,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:05,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:05,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:05,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:05,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:05,197 INFO L85 PathProgramCache]: Analyzing trace with hash 4163, now seen corresponding path program 1 times [2025-02-17 22:47:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:05,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182865286] [2025-02-17 22:47:05,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:05,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:05,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:05,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:05,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:05,207 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:05,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:05,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:05,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:05,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:05,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:05,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:05,217 INFO L85 PathProgramCache]: Analyzing trace with hash 3729960, now seen corresponding path program 1 times [2025-02-17 22:47:05,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:05,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617495284] [2025-02-17 22:47:05,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:05,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:05,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:05,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:05,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:05,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:05,222 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:05,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:05,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:05,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:05,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:05,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:05,274 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:05,274 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:05,274 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:05,275 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:05,275 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:05,275 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:05,275 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:05,276 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:05,276 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:05,276 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:05,276 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:05,284 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:05,384 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:05,385 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:05,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:05,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:05,388 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:05,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:47:05,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:05,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:05,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:05,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:05,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:05,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:05,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:47:05,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:05,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:05,568 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:05,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:05,573 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:05,574 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:05,574 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:05,574 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:05,574 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:05,574 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:05,574 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:05,574 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:05,574 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:47:05,574 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:05,574 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:05,575 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:05,599 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:05,602 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:05,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:05,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:05,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:05,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:47:05,609 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:05,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:05,622 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:05,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:05,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:05,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:05,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:05,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:05,630 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:05,637 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:47:05,638 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:05,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:05,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:05,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:05,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:47:05,645 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:05,645 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:05,646 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:05,646 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x5) = 1*w - 1*x5 Supporting invariants [] [2025-02-17 22:47:05,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:05,660 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:05,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:05,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:05,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:05,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:05,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:05,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:05,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:05,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:05,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:05,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:05,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:05,725 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:05,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:05,769 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:47:05,773 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 10153 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:06,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-17 22:47:06,580 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 10153 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28322 states and 181109 transitions. Complement of second has 6 states. [2025-02-17 22:47:06,585 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 [2025-02-17 22:47:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-02-17 22:47:06,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 96 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:47:06,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:06,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 96 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:47:06,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:06,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 96 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:47:06,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:06,608 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28322 states and 181109 transitions. [2025-02-17 22:47:07,236 INFO L131 ngComponentsAnalysis]: Automaton has 2382 accepting balls. 9568 [2025-02-17 22:47:07,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28322 states to 21606 states and 139533 transitions. [2025-02-17 22:47:07,757 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9866 [2025-02-17 22:47:07,900 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15736 [2025-02-17 22:47:07,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21606 states and 139533 transitions. [2025-02-17 22:47:07,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:07,901 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21606 states and 139533 transitions. [2025-02-17 22:47:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21606 states and 139533 transitions. [2025-02-17 22:47:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21606 to 15738. [2025-02-17 22:47:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15738 states, 15738 states have (on average 6.64944719786504) internal successors, (104649), 15737 states have internal predecessors, (104649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15738 states to 15738 states and 104649 transitions. [2025-02-17 22:47:09,270 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15738 states and 104649 transitions. [2025-02-17 22:47:09,270 INFO L432 stractBuchiCegarLoop]: Abstraction has 15738 states and 104649 transitions. [2025-02-17 22:47:09,270 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:47:09,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15738 states and 104649 transitions. [2025-02-17 22:47:09,541 INFO L131 ngComponentsAnalysis]: Automaton has 2382 accepting balls. 9568 [2025-02-17 22:47:09,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:09,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:09,542 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:47:09,542 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:09,543 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L15: Formula: (= v_f_1 0) InVars {} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[127] L15-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[130] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:47:09,543 INFO L754 eck$LassoCheckResult]: Loop: "[104] L41-->L43: Formula: (< v_x4_1 v_w_3) InVars {x4=v_x4_1, w=v_w_3} OutVars{x4=v_x4_1, w=v_w_3} AuxVars[] AssignedVars[]" "[106] L43-->L41: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:47:09,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash 120348, now seen corresponding path program 1 times [2025-02-17 22:47:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120663423] [2025-02-17 22:47:09,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:09,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:09,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:09,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,550 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:09,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:09,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:09,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:09,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 4291, now seen corresponding path program 1 times [2025-02-17 22:47:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:09,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931052750] [2025-02-17 22:47:09,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:09,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,555 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:09,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:09,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash 115657758, now seen corresponding path program 1 times [2025-02-17 22:47:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826079331] [2025-02-17 22:47:09,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:09,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:09,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:09,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,564 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:09,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:09,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:09,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:09,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:09,586 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:09,586 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:09,586 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:09,586 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:09,586 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:09,586 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,586 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:09,586 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:09,586 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:47:09,586 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:09,586 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:09,586 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:09,607 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:09,608 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:09,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:09,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:09,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:47:09,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:09,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:09,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:47:09,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:09,633 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:09,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:47:09,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:09,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:09,699 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:09,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:47:09,704 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:09,704 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:09,704 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:09,704 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:09,704 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:09,704 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,704 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:09,704 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:09,704 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:47:09,704 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:09,704 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:09,705 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:09,728 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:09,728 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:09,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:09,730 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:09,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:47:09,732 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:09,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:09,741 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:09,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:09,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:09,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:09,742 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:09,742 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:09,744 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:09,749 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:09,749 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:09,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:09,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:09,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:09,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:47:09,753 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:09,753 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:09,754 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:09,754 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x4) = 1*w - 1*x4 Supporting invariants [] [2025-02-17 22:47:09,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:09,759 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:09,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:09,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:47:09,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:47:09,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:09,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:09,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:09,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:09,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:09,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:09,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:09,791 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:09,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:09,808 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:47:09,809 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15738 states and 104649 transitions. cyclomatic complexity: 91825 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:10,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-02-17 22:47:10,889 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15738 states and 104649 transitions. cyclomatic complexity: 91825. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48332 states and 334313 transitions. Complement of second has 6 states. [2025-02-17 22:47:10,889 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 [2025-02-17 22:47:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-17 22:47:10,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:47:10,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:10,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:47:10,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:10,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:47:10,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:10,890 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48332 states and 334313 transitions. [2025-02-17 22:47:11,945 INFO L131 ngComponentsAnalysis]: Automaton has 2786 accepting balls. 9056 [2025-02-17 22:47:12,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48332 states to 36210 states and 252013 transitions. [2025-02-17 22:47:12,609 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12968 [2025-02-17 22:47:12,688 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19819 [2025-02-17 22:47:12,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36210 states and 252013 transitions. [2025-02-17 22:47:12,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:12,689 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36210 states and 252013 transitions. [2025-02-17 22:47:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36210 states and 252013 transitions. [2025-02-17 22:47:13,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36210 to 29359. [2025-02-17 22:47:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29359 states, 29359 states have (on average 7.243468782996696) internal successors, (212661), 29358 states have internal predecessors, (212661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29359 states to 29359 states and 212661 transitions. [2025-02-17 22:47:14,370 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29359 states and 212661 transitions. [2025-02-17 22:47:14,370 INFO L432 stractBuchiCegarLoop]: Abstraction has 29359 states and 212661 transitions. [2025-02-17 22:47:14,370 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:47:14,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29359 states and 212661 transitions. [2025-02-17 22:47:14,724 INFO L131 ngComponentsAnalysis]: Automaton has 2786 accepting balls. 9056 [2025-02-17 22:47:14,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:14,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:14,725 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:47:14,725 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:14,726 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L15: Formula: (= v_f_1 0) InVars {} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[127] L15-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[130] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[133] L16-->L50: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:47:14,726 INFO L754 eck$LassoCheckResult]: Loop: "[108] L50-->L52: Formula: (< v_x2_1 v_w_5) InVars {x2=v_x2_1, w=v_w_5} OutVars{x2=v_x2_1, w=v_w_5} AuxVars[] AssignedVars[]" "[110] L52-->L50: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-02-17 22:47:14,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash 3730921, now seen corresponding path program 1 times [2025-02-17 22:47:14,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:14,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191516505] [2025-02-17 22:47:14,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:14,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:14,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:14,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:14,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:14,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:14,731 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:14,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:14,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:14,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:14,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:14,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:14,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash 4419, now seen corresponding path program 1 times [2025-02-17 22:47:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:14,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724473742] [2025-02-17 22:47:14,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:14,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:14,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:14,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:14,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:14,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:14,738 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:14,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:14,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:14,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:14,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:14,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:14,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash -709548757, now seen corresponding path program 1 times [2025-02-17 22:47:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:14,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294236842] [2025-02-17 22:47:14,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:14,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:14,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:14,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:14,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:14,747 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:14,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:14,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:14,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:14,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:14,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:14,780 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:14,780 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:14,780 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:14,780 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:14,780 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:14,780 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:14,780 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:14,780 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:14,780 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:14,780 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:14,780 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:14,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:14,806 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:14,806 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:14,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:14,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:14,812 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:14,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:47:14,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:14,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:14,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:14,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:14,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:14,844 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:14,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:47:14,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:14,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:14,912 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:14,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:47:14,916 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:14,916 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:14,916 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:14,916 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:14,917 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:14,917 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:14,917 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:14,917 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:14,917 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:14,917 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:14,917 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:14,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:14,936 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:14,936 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:14,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:14,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:14,939 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:14,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:47:14,943 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:14,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:14,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:14,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:14,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:14,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:14,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:14,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:14,958 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:14,962 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:47:14,962 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:14,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:14,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:14,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:47:14,967 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:14,967 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:14,967 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:14,967 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x2) = 1*w - 1*x2 Supporting invariants [] [2025-02-17 22:47:14,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:47:14,974 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:14,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:14,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:14,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:14,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:14,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:14,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:14,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:15,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:15,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:15,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:15,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:15,006 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:15,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:15,021 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:47:15,021 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29359 states and 212661 transitions. cyclomatic complexity: 187730 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:15,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-17 22:47:16,620 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29359 states and 212661 transitions. cyclomatic complexity: 187730. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 92713 states and 687130 transitions. Complement of second has 6 states. [2025-02-17 22:47:16,620 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 [2025-02-17 22:47:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-02-17 22:47:16,621 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 102 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:47:16,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:16,621 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 102 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:47:16,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:16,621 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 102 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:47:16,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:16,621 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92713 states and 687130 transitions. [2025-02-17 22:47:18,874 INFO L131 ngComponentsAnalysis]: Automaton has 3006 accepting balls. 8012 [2025-02-17 22:47:20,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92713 states to 66231 states and 491550 transitions. [2025-02-17 22:47:20,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18906 [2025-02-17 22:47:20,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25649 [2025-02-17 22:47:20,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66231 states and 491550 transitions. [2025-02-17 22:47:20,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:20,147 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66231 states and 491550 transitions. [2025-02-17 22:47:20,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66231 states and 491550 transitions. [2025-02-17 22:47:21,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66231 to 55709. [2025-02-17 22:47:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55709 states, 55709 states have (on average 7.686065088226319) internal successors, (428183), 55708 states have internal predecessors, (428183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55709 states to 55709 states and 428183 transitions. [2025-02-17 22:47:22,979 INFO L240 hiAutomatonCegarLoop]: Abstraction has 55709 states and 428183 transitions. [2025-02-17 22:47:22,979 INFO L432 stractBuchiCegarLoop]: Abstraction has 55709 states and 428183 transitions. [2025-02-17 22:47:22,979 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:47:22,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55709 states and 428183 transitions. [2025-02-17 22:47:23,828 INFO L131 ngComponentsAnalysis]: Automaton has 3006 accepting balls. 8012 [2025-02-17 22:47:23,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:23,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:23,829 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:47:23,829 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:23,830 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L15: Formula: (= v_f_1 0) InVars {} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[127] L15-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[130] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[133] L16-->L50: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[136] L17-->L59: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-02-17 22:47:23,830 INFO L754 eck$LassoCheckResult]: Loop: "[112] L59-->L61: Formula: (< v_x3_1 v_w_7) InVars {w=v_w_7, x3=v_x3_1} OutVars{w=v_w_7, x3=v_x3_1} AuxVars[] AssignedVars[]" "[114] L61-->L59: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:47:23,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash 115658687, now seen corresponding path program 1 times [2025-02-17 22:47:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123333120] [2025-02-17 22:47:23,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:23,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:23,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:23,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:23,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:23,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:23,835 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:23,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:23,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:23,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:23,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:23,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:23,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:23,839 INFO L85 PathProgramCache]: Analyzing trace with hash 4547, now seen corresponding path program 1 times [2025-02-17 22:47:23,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:23,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137219318] [2025-02-17 22:47:23,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:23,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:23,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:23,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:23,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:23,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:23,842 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:23,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:23,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:23,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:23,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:23,848 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:23,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash -521147903, now seen corresponding path program 1 times [2025-02-17 22:47:23,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:23,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848025884] [2025-02-17 22:47:23,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:23,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:23,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:47:23,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:47:23,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:23,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:23,855 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:23,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:47:23,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:47:23,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:23,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:23,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:23,871 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:23,871 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:23,871 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:23,871 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:23,871 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:23,871 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:23,872 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:23,872 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:23,872 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:23,872 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:23,872 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:23,872 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:23,885 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:23,885 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:23,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:23,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:23,887 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:23,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-17 22:47:23,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:23,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:23,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:47:23,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:23,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:23,907 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:23,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-17 22:47:23,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:23,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:23,975 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:23,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-17 22:47:23,980 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:23,980 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:23,980 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:23,980 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:23,980 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:23,980 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:23,980 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:23,980 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:23,980 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:23,980 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:23,980 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:23,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:23,995 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:23,995 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:23,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:23,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:23,997 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:23,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-17 22:47:24,000 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:24,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:24,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:24,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:24,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:24,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:24,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:24,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:24,012 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:24,015 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:47:24,015 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:24,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:24,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:24,017 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:24,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-17 22:47:24,020 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:24,020 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:24,020 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:24,020 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x3) = 1*w - 1*x3 Supporting invariants [] [2025-02-17 22:47:24,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-17 22:47:24,026 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:24,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:24,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:47:24,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:47:24,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:24,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:24,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:24,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:24,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:24,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:24,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:24,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:24,062 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:24,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:24,075 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:47:24,075 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 55709 states and 428183 transitions. cyclomatic complexity: 379266 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:24,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:27,317 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 55709 states and 428183 transitions. cyclomatic complexity: 379266. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 167882 states and 1302513 transitions. Complement of second has 6 states. [2025-02-17 22:47:27,318 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 [2025-02-17 22:47:27,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-02-17 22:47:27,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 106 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:47:27,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:27,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 106 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:47:27,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:27,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 106 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:47:27,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:27,319 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167882 states and 1302513 transitions. [2025-02-17 22:47:32,046 INFO L131 ngComponentsAnalysis]: Automaton has 2644 accepting balls. 5970 [2025-02-17 22:47:34,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167882 states to 111294 states and 862097 transitions. [2025-02-17 22:47:34,537 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26764 [2025-02-17 22:47:34,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32760 [2025-02-17 22:47:34,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111294 states and 862097 transitions. [2025-02-17 22:47:34,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:34,660 INFO L218 hiAutomatonCegarLoop]: Abstraction has 111294 states and 862097 transitions. [2025-02-17 22:47:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111294 states and 862097 transitions. [2025-02-17 22:47:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111294 to 96600. [2025-02-17 22:47:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96600 states, 96600 states have (on average 7.971604554865425) internal successors, (770057), 96599 states have internal predecessors, (770057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96600 states to 96600 states and 770057 transitions. [2025-02-17 22:47:39,170 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96600 states and 770057 transitions. [2025-02-17 22:47:39,170 INFO L432 stractBuchiCegarLoop]: Abstraction has 96600 states and 770057 transitions. [2025-02-17 22:47:39,170 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:47:39,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96600 states and 770057 transitions. [2025-02-17 22:47:40,499 INFO L131 ngComponentsAnalysis]: Automaton has 2644 accepting balls. 5970 [2025-02-17 22:47:40,500 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:40,500 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:40,501 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:47:40,501 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:40,502 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L15: Formula: (= v_f_1 0) InVars {} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[127] L15-->L32: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[130] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[133] L16-->L50: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[136] L17-->L59: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" "[139] L18-->L68: Formula: (and (= v_thread5Thread1of1ForFork4_thidvar4_2 5) (= v_thread5Thread1of1ForFork4_thidvar1_2 5) (= v_thread5Thread1of1ForFork4_thidvar0_2 5) (= v_thread5Thread1of1ForFork4_thidvar3_2 5) (= v_thread5Thread1of1ForFork4_thidvar2_2 5)) InVars {} OutVars{thread5Thread1of1ForFork4_thidvar0=v_thread5Thread1of1ForFork4_thidvar0_2, thread5Thread1of1ForFork4_thidvar1=v_thread5Thread1of1ForFork4_thidvar1_2, thread5Thread1of1ForFork4_thidvar2=v_thread5Thread1of1ForFork4_thidvar2_2, thread5Thread1of1ForFork4_thidvar3=v_thread5Thread1of1ForFork4_thidvar3_2, thread5Thread1of1ForFork4_thidvar4=v_thread5Thread1of1ForFork4_thidvar4_2} AuxVars[] AssignedVars[thread5Thread1of1ForFork4_thidvar0, thread5Thread1of1ForFork4_thidvar1, thread5Thread1of1ForFork4_thidvar2, thread5Thread1of1ForFork4_thidvar3, thread5Thread1of1ForFork4_thidvar4]" [2025-02-17 22:47:40,502 INFO L754 eck$LassoCheckResult]: Loop: "[116] L68-->L70: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[118] L70-->L68: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:47:40,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:40,502 INFO L85 PathProgramCache]: Analyzing trace with hash -709547860, now seen corresponding path program 1 times [2025-02-17 22:47:40,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:40,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617785844] [2025-02-17 22:47:40,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:40,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:40,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:40,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:40,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:40,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:40,507 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:40,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:40,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:40,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:40,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:40,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:40,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash 4675, now seen corresponding path program 1 times [2025-02-17 22:47:40,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:40,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204521657] [2025-02-17 22:47:40,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:40,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:40,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:40,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:40,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:40,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:40,514 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:40,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:40,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:40,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:40,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:40,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:40,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1024310318, now seen corresponding path program 1 times [2025-02-17 22:47:40,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:40,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321296124] [2025-02-17 22:47:40,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:40,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:40,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:47:40,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:47:40,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:40,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:40,520 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:40,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:47:40,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:47:40,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:40,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:40,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:40,536 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:40,536 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:40,536 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:40,536 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:40,536 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:40,536 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:40,536 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:40,536 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:40,536 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:47:40,536 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:40,536 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:40,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:40,560 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:40,561 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:40,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:40,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:40,563 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:40,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-17 22:47:40,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:40,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:40,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:40,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:40,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:40,586 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:40,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-17 22:47:40,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:40,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:40,770 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:40,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-02-17 22:47:40,773 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:40,774 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:40,774 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:40,774 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:40,774 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:40,774 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:40,774 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:40,774 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:40,774 INFO L132 ssoRankerPreferences]: Filename of dumped script: m11.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:47:40,774 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:40,774 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:40,774 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:40,785 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:40,785 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:40,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:40,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:40,787 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:40,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-17 22:47:40,789 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:47:40,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:40,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:40,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:40,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:40,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:40,799 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:40,799 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:40,804 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:40,806 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:47:40,807 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:40,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:40,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:40,808 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:40,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-17 22:47:40,811 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:40,811 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:40,811 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:40,811 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:47:40,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-17 22:47:40,817 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:40,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:40,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:40,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:40,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:40,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:40,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:40,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:40,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:40,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:40,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:40,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:40,851 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:40,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:47:40,865 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:47:40,865 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96600 states and 770057 transitions. cyclomatic complexity: 683411 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:41,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-17 22:47:46,659 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96600 states and 770057 transitions. cyclomatic complexity: 683411. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 323207 states and 2538730 transitions. Complement of second has 7 states. [2025-02-17 22:47:46,659 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 [2025-02-17 22:47:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:47:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2025-02-17 22:47:46,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:47:46,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:46,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:47:46,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:46,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:47:46,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:46,660 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 323207 states and 2538730 transitions. [2025-02-17 22:47:55,024 INFO L131 ngComponentsAnalysis]: Automaton has 2047 accepting balls. 4776 [2025-02-17 22:47:59,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 323207 states to 207736 states and 1639499 transitions. [2025-02-17 22:47:59,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48164 [2025-02-17 22:47:59,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52341 [2025-02-17 22:47:59,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207736 states and 1639499 transitions. [2025-02-17 22:47:59,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:59,917 INFO L218 hiAutomatonCegarLoop]: Abstraction has 207736 states and 1639499 transitions. [2025-02-17 22:48:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207736 states and 1639499 transitions.