/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/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/2_thr/switch2.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:22,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:22,282 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:22,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:22,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:22,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:22,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:22,310 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:22,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:22,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:22,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:22,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:22,312 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:22,312 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:22,312 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:22,312 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:22,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:22,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:22,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:22,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:22,314 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:22,315 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:22,315 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:22,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:22,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:22,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:22,546 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:22,549 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:22,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/switch2.c.bpl [2025-04-26 18:42:22,552 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/switch2.c.bpl' [2025-04-26 18:42:22,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:22,569 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:22,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:22,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:22,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:22,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,600 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,607 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:22,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:22,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:22,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:22,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:22,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,619 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:22,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:22,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:22,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:22,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/1) ... [2025-04-26 18:42:22,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:22,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:22,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:22,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 18:42:22,687 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:22,687 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:22,687 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:22,688 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 18:42:22,723 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:22,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:22,810 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:22,810 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:22,817 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:22,818 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:22,818 INFO L201 PluginConnector]: Adding new model switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:22 BoogieIcfgContainer [2025-04-26 18:42:22,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:22,821 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:22,821 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:22,826 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:22,827 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:22,827 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:22" (1/2) ... [2025-04-26 18:42:22,828 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@642c4016 and model type switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:22, skipping insertion in model container [2025-04-26 18:42:22,828 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:22,828 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:22" (2/2) ... [2025-04-26 18:42:22,829 INFO L376 chiAutomizerObserver]: Analyzing ICFG switch2.c.bpl [2025-04-26 18:42:22,872 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 18:42:22,911 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:22,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:22,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:22,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:22,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 18:42:22,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 25 transitions, 64 flow [2025-04-26 18:42:22,983 INFO L116 PetriNetUnfolderBase]: 4/21 cut-off events. [2025-04-26 18:42:22,984 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 18:42:22,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 4/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 19. Up to 3 conditions per place. [2025-04-26 18:42:22,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 25 transitions, 64 flow [2025-04-26 18:42:22,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 21 transitions, 54 flow [2025-04-26 18:42:22,991 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 24 places, 21 transitions, 54 flow [2025-04-26 18:42:22,992 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 21 transitions, 54 flow [2025-04-26 18:42:23,003 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 61 states have (on average 2.180327868852459) internal successors, (in total 133), 61 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:23,003 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 62 states, 61 states have (on average 2.180327868852459) internal successors, (in total 133), 61 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:23,007 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:42:23,065 WARN L140 AmpleReduction]: Number of pruned transitions: 30 [2025-04-26 18:42:23,065 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:42:23,065 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 5 [2025-04-26 18:42:23,065 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:20 [2025-04-26 18:42:23,066 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:30 [2025-04-26 18:42:23,066 WARN L145 AmpleReduction]: Times succ was already a loop node:13 [2025-04-26 18:42:23,066 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:4 [2025-04-26 18:42:23,066 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:42:23,066 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 56 states, 55 states have (on average 1.5272727272727273) internal successors, (in total 84), 55 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:23,071 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:42:23,071 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:42:23,072 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:42:23,072 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:42:23,072 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:42:23,072 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:42:23,072 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:42:23,072 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:42:23,073 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 56 states, 55 states have (on average 1.5272727272727273) internal successors, (in total 84), 55 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:23,086 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 39 [2025-04-26 18:42:23,087 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:23,087 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:23,089 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:23,089 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 18:42:23,090 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:42:23,090 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 56 states, 55 states have (on average 1.5272727272727273) internal successors, (in total 84), 55 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:23,092 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 39 [2025-04-26 18:42:23,092 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:23,092 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:23,092 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:23,092 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 18:42:23,095 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[57] $Ultimate##0-->L29-1: Formula: (and (< 0 v_d_1) (= v_f_1 1)) InVars {d=v_d_1, f=v_f_1} OutVars{d=v_d_1, f=v_f_1} AuxVars[] AssignedVars[]" [2025-04-26 18:42:23,096 INFO L754 eck$LassoCheckResult]: Loop: "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" "[61] L24-->L25: Formula: (= (+ v_x1_3 v_d_2) v_x1_2) InVars {x1=v_x1_3, d=v_d_2} OutVars{x1=v_x1_2, d=v_d_2} AuxVars[] AssignedVars[x1]" "[63] L25-->L25-2: Formula: (< v_z_2 v_x1_5) InVars {x1=v_x1_5, z=v_z_2} OutVars{x1=v_x1_5, z=v_z_2} AuxVars[] AssignedVars[]" "[66] L25-2-->L29-1: Formula: (< v_x1_1 v_y_1) InVars {y=v_y_1, x1=v_x1_1} OutVars{y=v_y_1, x1=v_x1_1} AuxVars[] AssignedVars[]" [2025-04-26 18:42:23,099 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:23,099 INFO L85 PathProgramCache]: Analyzing trace with hash 3436, now seen corresponding path program 1 times [2025-04-26 18:42:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:23,104 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208263481] [2025-04-26 18:42:23,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:23,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:23,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:23,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:23,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,154 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:23,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:23,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:23,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,168 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:23,172 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2741830, now seen corresponding path program 1 times [2025-04-26 18:42:23,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:23,172 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796697112] [2025-04-26 18:42:23,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:23,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:23,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:23,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,180 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:23,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:23,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:23,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,187 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:23,191 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:23,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1119930831, now seen corresponding path program 1 times [2025-04-26 18:42:23,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:23,191 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630080295] [2025-04-26 18:42:23,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:23,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:23,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:23,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:23,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,203 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:23,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:23,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:23,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:23,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:23,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:23,308 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:23,309 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:23,309 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:23,309 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:23,309 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:23,309 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,309 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:23,309 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:23,309 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration1_Lasso [2025-04-26 18:42:23,309 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:23,309 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:23,320 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,330 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,336 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,442 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:23,447 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:23,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,450 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) [2025-04-26 18:42:23,452 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 [2025-04-26 18:42:23,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:23,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:23,467 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:23,467 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:42:23,473 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 [2025-04-26 18:42:23,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,476 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) [2025-04-26 18:42:23,476 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 [2025-04-26 18:42:23,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:23,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:23,497 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:23,498 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f=1} Honda state: {f=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:42:23,503 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 [2025-04-26 18:42:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,505 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) [2025-04-26 18:42:23,506 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 [2025-04-26 18:42:23,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:23,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:23,526 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 [2025-04-26 18:42:23,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,529 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) [2025-04-26 18:42:23,530 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 [2025-04-26 18:42:23,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:23,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:23,722 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:23,729 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 [2025-04-26 18:42:23,729 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:23,729 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:23,729 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:23,729 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:23,729 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:23,729 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,729 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:23,729 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:23,730 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration1_Lasso [2025-04-26 18:42:23,730 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:23,730 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:23,731 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,737 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,740 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:23,791 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:23,794 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:23,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,815 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) [2025-04-26 18:42:23,816 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 [2025-04-26 18:42:23,822 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 [2025-04-26 18:42:23,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:23,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:23,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:23,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:23,840 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:23,840 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:23,849 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:23,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:23,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,857 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) [2025-04-26 18:42:23,857 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 [2025-04-26 18:42:23,858 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 [2025-04-26 18:42:23,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:23,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:23,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:23,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:23,871 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:23,872 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:23,877 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:23,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 18:42:23,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,887 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) [2025-04-26 18:42:23,887 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 [2025-04-26 18:42:23,890 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 [2025-04-26 18:42:23,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:23,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:23,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:23,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:23,905 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:23,905 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:23,916 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:23,926 INFO L436 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-04-26 18:42:23,927 INFO L437 ModelExtractionUtils]: 7 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2025-04-26 18:42:23,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:23,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:23,932 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) [2025-04-26 18:42:23,933 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 [2025-04-26 18:42:23,933 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:23,951 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 [2025-04-26 18:42:23,951 INFO L439 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-04-26 18:42:23,952 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:23,952 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y, d, x1) = 1*y - 1*d - 1*x1 Supporting invariants [1*d - 1 >= 0] [2025-04-26 18:42:23,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:23,966 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-04-26 18:42:24,001 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:24,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-26 18:42:24,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:24,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:24,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:24,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:24,050 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 18:42:24,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:24,128 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 [2025-04-26 18:42:24,131 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 56 states, 55 states have (on average 1.5272727272727273) internal successors, (in total 84), 55 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,244 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 56 states, 55 states have (on average 1.5272727272727273) internal successors, (in total 84), 55 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 193 states and 289 transitions. Complement of second has 7 states. [2025-04-26 18:42:24,249 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2025-04-26 18:42:24,257 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 18:42:24,257 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,257 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 18:42:24,257 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,258 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 2 letters. Loop has 8 letters. [2025-04-26 18:42:24,258 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 193 states and 289 transitions. [2025-04-26 18:42:24,266 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 59 [2025-04-26 18:42:24,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 193 states to 123 states and 188 transitions. [2025-04-26 18:42:24,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2025-04-26 18:42:24,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2025-04-26 18:42:24,271 INFO L74 IsDeterministic]: Start isDeterministic. Operand 123 states and 188 transitions. [2025-04-26 18:42:24,271 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:24,271 INFO L218 hiAutomatonCegarLoop]: Abstraction has 123 states and 188 transitions. [2025-04-26 18:42:24,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 188 transitions. [2025-04-26 18:42:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 97. [2025-04-26 18:42:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 97 states have (on average 1.556701030927835) internal successors, (in total 151), 96 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 151 transitions. [2025-04-26 18:42:24,291 INFO L240 hiAutomatonCegarLoop]: Abstraction has 97 states and 151 transitions. [2025-04-26 18:42:24,291 INFO L438 stractBuchiCegarLoop]: Abstraction has 97 states and 151 transitions. [2025-04-26 18:42:24,291 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:42:24,291 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 151 transitions. [2025-04-26 18:42:24,292 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 51 [2025-04-26 18:42:24,292 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:24,292 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:24,292 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:24,292 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:24,293 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[75] L12-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-04-26 18:42:24,293 INFO L754 eck$LassoCheckResult]: Loop: "[69] L39-->L41: Formula: (< v_x2_1 v_w_1) InVars {x2=v_x2_1, w=v_w_1} OutVars{x2=v_x2_1, w=v_w_1} AuxVars[] AssignedVars[]" "[71] L41-->L39: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:24,293 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash 3454, now seen corresponding path program 1 times [2025-04-26 18:42:24,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,293 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97024733] [2025-04-26 18:42:24,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,296 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 3171, now seen corresponding path program 1 times [2025-04-26 18:42:24,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,303 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725270243] [2025-04-26 18:42:24,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,310 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,316 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash 3321504, now seen corresponding path program 1 times [2025-04-26 18:42:24,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,316 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659104850] [2025-04-26 18:42:24,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:24,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:24,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,319 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:24,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:24,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,333 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:24,334 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:24,334 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:24,334 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:24,334 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:24,334 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,334 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:24,334 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:24,334 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:24,334 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:24,334 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:24,334 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,349 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:24,349 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:24,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,351 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) [2025-04-26 18:42:24,353 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 [2025-04-26 18:42:24,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:24,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:24,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:24,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,374 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) [2025-04-26 18:42:24,374 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 [2025-04-26 18:42:24,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:24,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:24,442 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:24,447 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 [2025-04-26 18:42:24,447 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:24,447 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:24,447 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:24,447 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:24,447 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:24,447 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,447 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:24,447 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:24,447 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:24,447 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:24,447 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:24,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,466 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:24,466 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:24,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,468 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) [2025-04-26 18:42:24,469 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 [2025-04-26 18:42:24,470 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 [2025-04-26 18:42:24,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:24,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:24,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:24,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:24,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:24,482 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:24,482 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:24,483 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:24,485 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:24,485 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:42:24,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,488 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) [2025-04-26 18:42:24,489 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 [2025-04-26 18:42:24,490 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:24,493 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:42:24,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:24,494 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:24,494 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:24,494 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x2) = 1*w - 1*x2 Supporting invariants [] [2025-04-26 18:42:24,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:24,502 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:24,512 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:24,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:24,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:24,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:24,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:24,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:24,522 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:24,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:24,535 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 [2025-04-26 18:42:24,535 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 97 states and 151 transitions. cyclomatic complexity: 70 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,558 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 97 states and 151 transitions. cyclomatic complexity: 70. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 200 states and 316 transitions. Complement of second has 6 states. [2025-04-26 18:42:24,559 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:24,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2025-04-26 18:42:24,560 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 18:42:24,560 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,560 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:42:24,560 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,560 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 18:42:24,560 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:24,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 316 transitions. [2025-04-26 18:42:24,562 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 42 [2025-04-26 18:42:24,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 119 states and 185 transitions. [2025-04-26 18:42:24,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2025-04-26 18:42:24,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2025-04-26 18:42:24,564 INFO L74 IsDeterministic]: Start isDeterministic. Operand 119 states and 185 transitions. [2025-04-26 18:42:24,564 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:24,564 INFO L218 hiAutomatonCegarLoop]: Abstraction has 119 states and 185 transitions. [2025-04-26 18:42:24,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 185 transitions. [2025-04-26 18:42:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2025-04-26 18:42:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 114 states have (on average 1.5614035087719298) internal successors, (in total 178), 113 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 178 transitions. [2025-04-26 18:42:24,572 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 178 transitions. [2025-04-26 18:42:24,572 INFO L438 stractBuchiCegarLoop]: Abstraction has 114 states and 178 transitions. [2025-04-26 18:42:24,573 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:42:24,573 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 178 transitions. [2025-04-26 18:42:24,573 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 42 [2025-04-26 18:42:24,573 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:24,573 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:24,574 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 18:42:24,574 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2025-04-26 18:42:24,574 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[57] $Ultimate##0-->L29-1: Formula: (and (< 0 v_d_1) (= v_f_1 1)) InVars {d=v_d_1, f=v_f_1} OutVars{d=v_d_1, f=v_f_1} AuxVars[] AssignedVars[]" "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-04-26 18:42:24,574 INFO L754 eck$LassoCheckResult]: Loop: "[61] L24-->L25: Formula: (= (+ v_x1_3 v_d_2) v_x1_2) InVars {x1=v_x1_3, d=v_d_2} OutVars{x1=v_x1_2, d=v_d_2} AuxVars[] AssignedVars[x1]" "[63] L25-->L25-2: Formula: (< v_z_2 v_x1_5) InVars {x1=v_x1_5, z=v_z_2} OutVars{x1=v_x1_5, z=v_z_2} AuxVars[] AssignedVars[]" "[65] L25-2-->L31: Formula: (<= v_y_2 v_x1_6) InVars {y=v_y_2, x1=v_x1_6} OutVars{y=v_y_2, x1=v_x1_6} AuxVars[] AssignedVars[]" "[67] L31-->L29-1: Formula: (= v_f_2 0) InVars {} OutVars{f=v_f_2} AuxVars[] AssignedVars[f]" "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-04-26 18:42:24,574 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash 106575, now seen corresponding path program 1 times [2025-04-26 18:42:24,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,575 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945447678] [2025-04-26 18:42:24,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:24,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:24,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,581 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:24,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:24,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,584 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,584 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 86905366, now seen corresponding path program 1 times [2025-04-26 18:42:24,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,585 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895812780] [2025-04-26 18:42:24,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:24,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:24,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:24,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:42:24,611 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895812780] [2025-04-26 18:42:24,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895812780] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:42:24,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:42:24,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 18:42:24,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403810623] [2025-04-26 18:42:24,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:42:24,614 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-04-26 18:42:24,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:42:24,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:42:24,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:42:24,616 INFO L87 Difference]: Start difference. First operand 114 states and 178 transitions. cyclomatic complexity: 80 Second operand has 3 states, 2 states have (on average 2.5) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:42:24,626 INFO L93 Difference]: Finished difference Result 155 states and 209 transitions. [2025-04-26 18:42:24,627 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 209 transitions. [2025-04-26 18:42:24,632 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-04-26 18:42:24,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 40 states and 58 transitions. [2025-04-26 18:42:24,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2025-04-26 18:42:24,632 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2025-04-26 18:42:24,632 INFO L74 IsDeterministic]: Start isDeterministic. Operand 40 states and 58 transitions. [2025-04-26 18:42:24,632 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:24,632 INFO L218 hiAutomatonCegarLoop]: Abstraction has 40 states and 58 transitions. [2025-04-26 18:42:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 58 transitions. [2025-04-26 18:42:24,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-04-26 18:42:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.45) internal successors, (in total 58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2025-04-26 18:42:24,634 INFO L240 hiAutomatonCegarLoop]: Abstraction has 40 states and 58 transitions. [2025-04-26 18:42:24,636 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:42:24,637 INFO L438 stractBuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2025-04-26 18:42:24,637 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:42:24,637 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 58 transitions. [2025-04-26 18:42:24,638 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-04-26 18:42:24,638 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:24,638 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:24,638 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 18:42:24,638 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 18:42:24,639 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[57] $Ultimate##0-->L29-1: Formula: (and (< 0 v_d_1) (= v_f_1 1)) InVars {d=v_d_1, f=v_f_1} OutVars{d=v_d_1, f=v_f_1} AuxVars[] AssignedVars[]" "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" "[75] L12-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[68] L39-->L43: Formula: (<= v_w_2 v_x2_4) InVars {x2=v_x2_4, w=v_w_2} OutVars{x2=v_x2_4, w=v_w_2} AuxVars[] AssignedVars[]" "[70] L43-->thread2FINAL: Formula: (= (+ v_d_3 v_d_4) 0) InVars {d=v_d_4} OutVars{d=v_d_3} AuxVars[] AssignedVars[d]" [2025-04-26 18:42:24,639 INFO L754 eck$LassoCheckResult]: Loop: "[61] L24-->L25: Formula: (= (+ v_x1_3 v_d_2) v_x1_2) InVars {x1=v_x1_3, d=v_d_2} OutVars{x1=v_x1_2, d=v_d_2} AuxVars[] AssignedVars[x1]" "[63] L25-->L25-2: Formula: (< v_z_2 v_x1_5) InVars {x1=v_x1_5, z=v_z_2} OutVars{x1=v_x1_5, z=v_z_2} AuxVars[] AssignedVars[]" "[66] L25-2-->L29-1: Formula: (< v_x1_1 v_y_1) InVars {y=v_y_1, x1=v_x1_1} OutVars{y=v_y_1, x1=v_x1_1} AuxVars[] AssignedVars[]" "[59] L29-1-->L24: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-04-26 18:42:24,639 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1119917218, now seen corresponding path program 1 times [2025-04-26 18:42:24,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,639 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063008544] [2025-04-26 18:42:24,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:24,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:24,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,648 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:24,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:24,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,651 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2803420, now seen corresponding path program 2 times [2025-04-26 18:42:24,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,652 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110078632] [2025-04-26 18:42:24,652 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 18:42:24,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,657 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:24,658 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:24,658 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 18:42:24,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,658 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:24,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:24,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,661 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash -287622215, now seen corresponding path program 1 times [2025-04-26 18:42:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:24,661 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605550888] [2025-04-26 18:42:24,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:24,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:24,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 18:42:24,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 18:42:24,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,665 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:24,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 18:42:24,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 18:42:24,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:24,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:24,669 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:24,746 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:24,746 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:24,746 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:24,746 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:24,746 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:24,746 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,746 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:24,747 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:24,747 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration4_Lasso [2025-04-26 18:42:24,747 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:24,747 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:24,747 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,751 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,753 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,756 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,767 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,771 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:24,820 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:24,820 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:24,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,822 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) [2025-04-26 18:42:24,824 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 [2025-04-26 18:42:24,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:24,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:24,836 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:24,836 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork0_thidvar1=0} Honda state: {thread2Thread1of1ForFork0_thidvar1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:42:24,842 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 [2025-04-26 18:42:24,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,844 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) [2025-04-26 18:42:24,845 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 [2025-04-26 18:42:24,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:24,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:24,857 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:24,857 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork0_thidvar0=0} Honda state: {thread2Thread1of1ForFork0_thidvar0=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:42:24,862 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 [2025-04-26 18:42:24,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,864 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) [2025-04-26 18:42:24,865 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 [2025-04-26 18:42:24,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:24,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:24,876 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:24,876 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork1_thidvar0=0} Honda state: {thread1Thread1of1ForFork1_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:42:24,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 18:42:24,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,884 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) [2025-04-26 18:42:24,886 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 [2025-04-26 18:42:24,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:24,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:24,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 18:42:24,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:24,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:24,908 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) [2025-04-26 18:42:24,909 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 [2025-04-26 18:42:24,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:24,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:25,109 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:25,116 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 [2025-04-26 18:42:25,116 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:25,116 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:25,116 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:25,116 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:25,116 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:25,116 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:25,116 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:25,116 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:25,117 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch2.c.bpl_petrified1_Iteration4_Lasso [2025-04-26 18:42:25,117 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:25,117 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:25,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:25,120 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:25,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:25,131 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:25,134 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:25,136 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:25,184 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:25,184 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:25,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:25,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:25,186 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) [2025-04-26 18:42:25,188 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 [2025-04-26 18:42:25,188 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 [2025-04-26 18:42:25,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:25,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:25,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:25,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:25,201 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:25,201 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:25,203 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:25,213 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 [2025-04-26 18:42:25,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:25,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:25,215 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) [2025-04-26 18:42:25,215 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 [2025-04-26 18:42:25,216 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 [2025-04-26 18:42:25,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:25,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:25,226 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:25,226 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:25,228 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:25,228 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:25,230 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:25,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:25,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:25,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:25,238 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2025-04-26 18:42:25,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 18:42:25,241 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 [2025-04-26 18:42:25,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:25,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:25,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:25,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:25,256 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:25,256 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:25,262 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:25,271 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:42:25,271 INFO L437 ModelExtractionUtils]: 9 out of 16 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:25,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:25,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:25,276 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2025-04-26 18:42:25,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 18:42:25,277 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:25,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-04-26 18:42:25,294 INFO L439 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-04-26 18:42:25,294 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:25,294 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(d, z, x1) = 1*d - 1*z + 1*x1 Supporting invariants [-1*d - 1 >= 0] [2025-04-26 18:42:25,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:25,303 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-04-26 18:42:25,321 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:25,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:25,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:25,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:25,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:25,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:25,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:25,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:25,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:25,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:25,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:25,357 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 18:42:25,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:25,403 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2025-04-26 18:42:25,403 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 58 transitions. cyclomatic complexity: 26 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (in total 10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:25,466 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 58 transitions. cyclomatic complexity: 26. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (in total 10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 49 states and 68 transitions. Complement of second has 7 states. [2025-04-26 18:42:25,469 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (in total 10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2025-04-26 18:42:25,470 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 18:42:25,470 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:25,470 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 10 letters. Loop has 4 letters. [2025-04-26 18:42:25,470 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:25,470 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 6 letters. Loop has 8 letters. [2025-04-26 18:42:25,470 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:25,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 68 transitions. [2025-04-26 18:42:25,471 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:25,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 0 states and 0 transitions. [2025-04-26 18:42:25,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:42:25,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:42:25,471 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:42:25,471 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:42:25,471 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:25,471 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:25,471 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:25,471 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 18:42:25,471 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:42:25,471 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:25,471 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:42:25,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 18:42:25,481 INFO L201 PluginConnector]: Adding new model switch2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:42:25 BoogieIcfgContainer [2025-04-26 18:42:25,482 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:42:25,482 INFO L158 Benchmark]: Toolchain (without parser) took 2913.59ms. Allocated memory was 167.8MB in the beginning and 142.6MB in the end (delta: -25.2MB). Free memory was 95.2MB in the beginning and 102.1MB in the end (delta: -6.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:25,482 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.30ms. Allocated memory is still 167.8MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:25,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.43ms. Allocated memory is still 167.8MB. Free memory was 95.2MB in the beginning and 93.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:25,483 INFO L158 Benchmark]: Boogie Preprocessor took 26.81ms. Allocated memory is still 167.8MB. Free memory was 93.3MB in the beginning and 92.4MB in the end (delta: 929.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:25,483 INFO L158 Benchmark]: RCFGBuilder took 183.25ms. Allocated memory is still 167.8MB. Free memory was 92.4MB in the beginning and 83.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 18:42:25,483 INFO L158 Benchmark]: BuchiAutomizer took 2660.73ms. Allocated memory was 167.8MB in the beginning and 142.6MB in the end (delta: -25.2MB). Free memory was 83.3MB in the beginning and 102.1MB in the end (delta: -18.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:25,484 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.30ms. Allocated memory is still 167.8MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.43ms. Allocated memory is still 167.8MB. Free memory was 95.2MB in the beginning and 93.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 26.81ms. Allocated memory is still 167.8MB. Free memory was 93.3MB in the beginning and 92.4MB in the end (delta: 929.3kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 183.25ms. Allocated memory is still 167.8MB. Free memory was 92.4MB in the beginning and 83.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2660.73ms. Allocated memory was 167.8MB in the beginning and 142.6MB in the end (delta: -25.2MB). Free memory was 83.3MB in the beginning and 102.1MB in the end (delta: -18.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 31 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 86 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital28 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf95 smp100 dnf100 smp100 tf103 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 54ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 159, Number of transitions in reduction automaton: 84, Number of states in reduction automaton: 56, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * d + -1 * x1 + y and consists of 4 locations. One deterministic module has affine ranking function w + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * z + x1 + d and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 18:42:25,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...