/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/switch.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:19,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:19,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:19,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:19,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:19,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:19,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:19,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:19,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:19,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:19,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:19,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:19,470 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:19,470 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:19,470 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:19,470 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:19,470 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:19,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:19,471 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:19,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:19,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:19,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:19,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:19,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:19,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:19,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:19,472 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:19,472 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:19,472 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:19,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:19,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:19,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:19,676 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:19,677 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:19,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/switch.c.bpl [2025-04-26 18:42:19,680 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/switch.c.bpl' [2025-04-26 18:42:19,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:19,696 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:19,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:19,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:19,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:19,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,728 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:19,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:19,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:19,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:19,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:19,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,737 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:19,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:19,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:19,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:19,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/1) ... [2025-04-26 18:42:19,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:19,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:19,772 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 18:42:19,775 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 18:42:19,794 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:19,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:19,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:19,795 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:19,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:19,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:19,795 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:19,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:19,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:19,795 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 18:42:19,829 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:19,831 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:19,897 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:19,897 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:19,904 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:19,904 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:19,904 INFO L201 PluginConnector]: Adding new model switch.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:19 BoogieIcfgContainer [2025-04-26 18:42:19,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:19,906 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:19,906 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:19,911 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:19,911 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:19,912 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "switch.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:19" (1/2) ... [2025-04-26 18:42:19,913 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72071d38 and model type switch.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:19, skipping insertion in model container [2025-04-26 18:42:19,913 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:19,913 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "switch.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:19" (2/2) ... [2025-04-26 18:42:19,914 INFO L376 chiAutomizerObserver]: Analyzing ICFG switch.c.bpl [2025-04-26 18:42:19,951 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 18:42:19,982 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:19,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:19,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:19,986 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 18:42:19,988 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 18:42:20,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 25 transitions, 64 flow [2025-04-26 18:42:20,046 INFO L116 PetriNetUnfolderBase]: 4/21 cut-off events. [2025-04-26 18:42:20,047 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 18:42:20,050 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 3. Compared 25 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 18:42:20,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 25 transitions, 64 flow [2025-04-26 18:42:20,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 21 transitions, 54 flow [2025-04-26 18:42:20,053 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 24 places, 21 transitions, 54 flow [2025-04-26 18:42:20,053 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 21 transitions, 54 flow [2025-04-26 18:42:20,066 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 18:42:20,067 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 18:42:20,070 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:42:20,113 WARN L140 AmpleReduction]: Number of pruned transitions: 33 [2025-04-26 18:42:20,114 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:42:20,114 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 11 [2025-04-26 18:42:20,114 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:19 [2025-04-26 18:42:20,114 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:30 [2025-04-26 18:42:20,114 WARN L145 AmpleReduction]: Times succ was already a loop node:17 [2025-04-26 18:42:20,114 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:11 [2025-04-26 18:42:20,114 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:42:20,114 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 61 states, 60 states have (on average 1.65) internal successors, (in total 99), 60 states have internal predecessors, (99), 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 18:42:20,119 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:42:20,119 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:42:20,119 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:42:20,119 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:42:20,119 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:42:20,119 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:42:20,119 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:42:20,119 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:42:20,121 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 61 states, 60 states have (on average 1.65) internal successors, (in total 99), 60 states have internal predecessors, (99), 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 18:42:20,128 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 44 [2025-04-26 18:42:20,128 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:20,129 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:20,131 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 18:42:20,131 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:20,131 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:42:20,131 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 61 states, 60 states have (on average 1.65) internal successors, (in total 99), 60 states have internal predecessors, (99), 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 18:42:20,133 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 44 [2025-04-26 18:42:20,133 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:20,133 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:20,133 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 18:42:20,133 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:20,137 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-04-26 18:42:20,137 INFO L754 eck$LassoCheckResult]: Loop: "[58] L21-->L23: 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[]" "[60] L23-->L21: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:20,140 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash 109, now seen corresponding path program 1 times [2025-04-26 18:42:20,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:20,145 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180071251] [2025-04-26 18:42:20,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:20,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:20,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:42:20,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:42:20,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,200 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:20,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:42:20,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:42:20,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:20,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2819, now seen corresponding path program 1 times [2025-04-26 18:42:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:20,220 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348813587] [2025-04-26 18:42:20,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:20,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:20,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:20,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,226 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:20,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:20,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:20,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:20,230 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash 106607, now seen corresponding path program 1 times [2025-04-26 18:42:20,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:20,230 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594434909] [2025-04-26 18:42:20,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:20,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:20,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:20,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:20,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,235 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:20,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:20,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:20,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,239 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:20,275 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:20,276 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:20,276 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:20,276 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:20,276 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:20,276 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:20,276 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:20,276 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:20,277 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:20,277 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:20,277 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:20,286 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:20,337 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:20,338 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:20,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:20,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:20,341 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 18:42:20,343 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 18:42:20,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:20,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:20,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 18:42:20,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:20,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:20,421 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 18:42:20,422 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 18:42:20,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:20,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:20,490 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:20,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 18:42:20,494 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:20,494 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:20,494 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:20,494 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:20,494 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:20,494 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:20,495 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:20,495 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:20,495 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:20,495 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:20,495 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:20,496 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:20,522 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:20,525 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:20,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:20,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:20,527 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 18:42:20,528 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 18:42:20,529 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 18:42:20,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:20,556 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:20,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:20,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:20,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:20,560 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:20,560 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:20,562 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:20,568 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:42:20,568 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:20,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:20,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:20,571 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 18:42:20,572 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 18:42:20,573 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:20,576 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:42:20,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:20,577 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:20,577 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:20,577 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(w, x2) = 1*w - 1*x2 Supporting invariants [] [2025-04-26 18:42:20,585 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 18:42:20,588 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:20,610 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:20,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:42:20,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:42:20,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:20,619 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:20,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:20,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:20,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:20,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:20,644 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:20,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:20,666 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 18:42:20,699 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 18:42:20,701 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 61 states, 60 states have (on average 1.65) internal successors, (in total 99), 60 states have internal predecessors, (99), 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 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 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 18:42:20,799 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 61 states, 60 states have (on average 1.65) internal successors, (in total 99), 60 states have internal predecessors, (99), 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 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 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 138 states and 227 transitions. Complement of second has 6 states. [2025-04-26 18:42:20,801 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 18:42:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 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 18:42:20,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 35 transitions. [2025-04-26 18:42:20,813 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 35 transitions. Stem has 1 letters. Loop has 2 letters. [2025-04-26 18:42:20,813 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:20,813 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 35 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 18:42:20,814 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:20,814 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 35 transitions. Stem has 1 letters. Loop has 4 letters. [2025-04-26 18:42:20,814 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:20,814 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 227 transitions. [2025-04-26 18:42:20,819 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 24 [2025-04-26 18:42:20,822 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 61 states and 101 transitions. [2025-04-26 18:42:20,822 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2025-04-26 18:42:20,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2025-04-26 18:42:20,823 INFO L74 IsDeterministic]: Start isDeterministic. Operand 61 states and 101 transitions. [2025-04-26 18:42:20,823 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:20,823 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 101 transitions. [2025-04-26 18:42:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 101 transitions. [2025-04-26 18:42:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2025-04-26 18:42:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.6666666666666667) internal successors, (in total 90), 53 states have internal predecessors, (90), 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 18:42:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 90 transitions. [2025-04-26 18:42:20,844 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 90 transitions. [2025-04-26 18:42:20,845 INFO L438 stractBuchiCegarLoop]: Abstraction has 54 states and 90 transitions. [2025-04-26 18:42:20,845 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:42:20,845 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 90 transitions. [2025-04-26 18:42:20,845 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 24 [2025-04-26 18:42:20,845 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:20,846 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:20,846 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:42:20,846 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 18:42:20,846 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[57] L21-->L25: Formula: (<= v_w_2 v_x2_4) InVars {x2=v_x2_4, w=v_w_2} OutVars{x2=v_x2_4, w=v_w_2} AuxVars[] AssignedVars[]" "[75] L12-->$Ultimate##0: 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]" "[62] $Ultimate##0-->L39-1: Formula: (and (= v_f_2 1) (< 0 v_d_3)) InVars {d=v_d_3, f=v_f_2} OutVars{d=v_d_3, f=v_f_2} AuxVars[] AssignedVars[]" [2025-04-26 18:42:20,846 INFO L754 eck$LassoCheckResult]: Loop: "[64] L39-1-->L34: Formula: (< 0 v_f_4) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" "[66] L34-->L35: Formula: (= v_x1_5 (+ v_x1_6 v_d_4)) InVars {x1=v_x1_6, d=v_d_4} OutVars{x1=v_x1_5, d=v_d_4} AuxVars[] AssignedVars[x1]" "[68] L35-->L35-2: Formula: (< v_z_2 v_x1_2) InVars {x1=v_x1_2, z=v_z_2} OutVars{x1=v_x1_2, z=v_z_2} AuxVars[] AssignedVars[]" "[71] L35-2-->L39-1: Formula: (< v_x1_4 v_y_2) InVars {y=v_y_2, x1=v_x1_4} OutVars{y=v_y_2, x1=v_x1_4} AuxVars[] AssignedVars[]" [2025-04-26 18:42:20,847 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:20,847 INFO L85 PathProgramCache]: Analyzing trace with hash 3304383, now seen corresponding path program 1 times [2025-04-26 18:42:20,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:20,847 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224857883] [2025-04-26 18:42:20,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:20,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:20,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:20,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:20,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,855 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:20,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:20,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:20,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:20,859 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2895750, now seen corresponding path program 1 times [2025-04-26 18:42:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:20,861 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941843586] [2025-04-26 18:42:20,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:20,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:20,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:20,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,866 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:20,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:20,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:20,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,871 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:20,872 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2052682684, now seen corresponding path program 1 times [2025-04-26 18:42:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:20,872 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791453135] [2025-04-26 18:42:20,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:20,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:42:20,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:42:20,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,880 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:20,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:42:20,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:42:20,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:20,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:20,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:20,972 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:20,972 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:20,972 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:20,972 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:20,972 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:20,972 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:20,972 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:20,972 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:20,972 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch.c.bpl_petrified1_Iteration2_Lasso [2025-04-26 18:42:20,973 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:20,973 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:20,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:20,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:20,983 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:20,988 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:20,991 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:20,993 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,054 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:21,054 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:21,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,057 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 18:42:21,058 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 18:42:21,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:21,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:21,071 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:21,071 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 18:42:21,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 18:42:21,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,078 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 18:42:21,079 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 18:42:21,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:21,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:21,091 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:21,092 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 18:42:21,097 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 18:42:21,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,099 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 18:42:21,099 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 18:42:21,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:21,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:21,119 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:21,119 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f=1} Honda state: {f=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:42:21,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 18:42:21,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,126 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 18:42:21,128 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 18:42:21,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:21,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:21,146 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:21,146 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {w=0, x2=0} Honda state: {w=0, x2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:42:21,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 18:42:21,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,153 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 18:42:21,154 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 18:42:21,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:21,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:21,167 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:21,167 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 18:42:21,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 18:42:21,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,174 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 18:42:21,175 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 18:42:21,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:21,176 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:21,194 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 18:42:21,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,196 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 18:42:21,196 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 18:42:21,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:21,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:21,395 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:21,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 18:42:21,402 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:21,402 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:21,403 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:21,403 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:21,403 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:21,403 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,403 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:21,403 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:21,403 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch.c.bpl_petrified1_Iteration2_Lasso [2025-04-26 18:42:21,403 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:21,403 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:21,404 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,408 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,414 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,417 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,420 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,425 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,480 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:21,480 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:21,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,482 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 18:42:21,483 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 18:42:21,484 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 18:42:21,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:21,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:21,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:21,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:21,496 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:21,496 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:21,499 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:21,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 18:42:21,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,507 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 18:42:21,509 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 18:42:21,510 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 18:42:21,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:21,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:21,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:21,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:21,521 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:21,521 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:21,524 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:21,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:21,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,532 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 18:42:21,534 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 18:42:21,535 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 18:42:21,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:21,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:21,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:21,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:21,546 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:21,547 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:21,551 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:21,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:21,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,559 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 18:42:21,559 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 18:42:21,563 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 18:42:21,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:21,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:21,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:21,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:21,576 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:21,576 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:21,579 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:21,585 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 18:42:21,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,588 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 18:42:21,589 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 18:42:21,590 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 18:42:21,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:21,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:21,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:21,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:21,604 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:21,605 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:21,608 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:21,614 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 18:42:21,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,616 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 18:42:21,617 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 18:42:21,618 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 18:42:21,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:21,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:21,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:21,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:21,631 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:21,631 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:21,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:21,642 INFO L436 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-04-26 18:42:21,642 INFO L437 ModelExtractionUtils]: 9 out of 16 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:21,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:21,644 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 18:42:21,646 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 18:42:21,647 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:21,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:21,664 INFO L439 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-04-26 18:42:21,664 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:21,664 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 18:42:21,670 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 18:42:21,673 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-04-26 18:42:21,695 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:21,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:21,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:21,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:21,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-26 18:42:21,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:21,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:21,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:21,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:21,707 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 18:42:21,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:21,741 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 18:42:21,741 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 18:42:21,741 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 90 transitions. cyclomatic complexity: 43 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 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 18:42:21,786 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 90 transitions. cyclomatic complexity: 43. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 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 152 states and 244 transitions. Complement of second has 7 states. [2025-04-26 18:42:21,786 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 18:42:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 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 18:42:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2025-04-26 18:42:21,787 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 18:42:21,787 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:21,787 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 8 letters. Loop has 4 letters. [2025-04-26 18:42:21,787 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:21,787 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 4 letters. Loop has 8 letters. [2025-04-26 18:42:21,787 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:21,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152 states and 244 transitions. [2025-04-26 18:42:21,789 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 42 [2025-04-26 18:42:21,790 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152 states to 152 states and 244 transitions. [2025-04-26 18:42:21,790 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2025-04-26 18:42:21,791 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2025-04-26 18:42:21,791 INFO L74 IsDeterministic]: Start isDeterministic. Operand 152 states and 244 transitions. [2025-04-26 18:42:21,791 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:21,791 INFO L218 hiAutomatonCegarLoop]: Abstraction has 152 states and 244 transitions. [2025-04-26 18:42:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states and 244 transitions. [2025-04-26 18:42:21,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2025-04-26 18:42:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 130 states have (on average 1.6153846153846154) internal successors, (in total 210), 129 states have internal predecessors, (210), 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 18:42:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 210 transitions. [2025-04-26 18:42:21,796 INFO L240 hiAutomatonCegarLoop]: Abstraction has 130 states and 210 transitions. [2025-04-26 18:42:21,796 INFO L438 stractBuchiCegarLoop]: Abstraction has 130 states and 210 transitions. [2025-04-26 18:42:21,796 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:42:21,796 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 130 states and 210 transitions. [2025-04-26 18:42:21,797 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 42 [2025-04-26 18:42:21,797 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:21,797 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:21,798 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:42:21,798 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2025-04-26 18:42:21,798 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[57] L21-->L25: Formula: (<= v_w_2 v_x2_4) InVars {x2=v_x2_4, w=v_w_2} OutVars{x2=v_x2_4, w=v_w_2} AuxVars[] AssignedVars[]" "[75] L12-->$Ultimate##0: 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]" "[62] $Ultimate##0-->L39-1: Formula: (and (= v_f_2 1) (< 0 v_d_3)) InVars {d=v_d_3, f=v_f_2} OutVars{d=v_d_3, f=v_f_2} AuxVars[] AssignedVars[]" "[64] L39-1-->L34: Formula: (< 0 v_f_4) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" [2025-04-26 18:42:21,798 INFO L754 eck$LassoCheckResult]: Loop: "[66] L34-->L35: Formula: (= v_x1_5 (+ v_x1_6 v_d_4)) InVars {x1=v_x1_6, d=v_d_4} OutVars{x1=v_x1_5, d=v_d_4} AuxVars[] AssignedVars[x1]" "[68] L35-->L35-2: Formula: (< v_z_2 v_x1_2) InVars {x1=v_x1_2, z=v_z_2} OutVars{x1=v_x1_2, z=v_z_2} AuxVars[] AssignedVars[]" "[70] L35-2-->L41: Formula: (<= v_y_1 v_x1_3) InVars {y=v_y_1, x1=v_x1_3} OutVars{y=v_y_1, x1=v_x1_3} AuxVars[] AssignedVars[]" "[72] L41-->L39-1: Formula: (= v_f_3 0) InVars {} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[64] L39-1-->L34: Formula: (< 0 v_f_4) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" [2025-04-26 18:42:21,798 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash 102435937, now seen corresponding path program 1 times [2025-04-26 18:42:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:21,799 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017766084] [2025-04-26 18:42:21,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:21,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:21,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:21,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:21,802 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:21,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:21,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:21,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:21,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:21,805 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:21,805 INFO L85 PathProgramCache]: Analyzing trace with hash 91676891, now seen corresponding path program 1 times [2025-04-26 18:42:21,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:21,805 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628711716] [2025-04-26 18:42:21,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:21,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:21,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:21,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:21,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:21,827 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 18:42:21,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:42:21,827 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628711716] [2025-04-26 18:42:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628711716] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:42:21,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:42:21,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 18:42:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802668522] [2025-04-26 18:42:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:42:21,831 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-04-26 18:42:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:42:21,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:42:21,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:42:21,832 INFO L87 Difference]: Start difference. First operand 130 states and 210 transitions. cyclomatic complexity: 95 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 18:42:21,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:42:21,847 INFO L93 Difference]: Finished difference Result 177 states and 269 transitions. [2025-04-26 18:42:21,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 269 transitions. [2025-04-26 18:42:21,849 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2025-04-26 18:42:21,849 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 49 states and 76 transitions. [2025-04-26 18:42:21,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2025-04-26 18:42:21,850 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2025-04-26 18:42:21,850 INFO L74 IsDeterministic]: Start isDeterministic. Operand 49 states and 76 transitions. [2025-04-26 18:42:21,850 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:21,850 INFO L218 hiAutomatonCegarLoop]: Abstraction has 49 states and 76 transitions. [2025-04-26 18:42:21,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 76 transitions. [2025-04-26 18:42:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-04-26 18:42:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (in total 76), 48 states have internal predecessors, (76), 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 18:42:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 76 transitions. [2025-04-26 18:42:21,852 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 76 transitions. [2025-04-26 18:42:21,852 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:42:21,852 INFO L438 stractBuchiCegarLoop]: Abstraction has 49 states and 76 transitions. [2025-04-26 18:42:21,853 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:42:21,853 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 76 transitions. [2025-04-26 18:42:21,853 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2025-04-26 18:42:21,853 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:21,853 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:21,854 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 18:42:21,854 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 18:42:21,854 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->L21: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[57] L21-->L25: Formula: (<= v_w_2 v_x2_4) InVars {x2=v_x2_4, w=v_w_2} OutVars{x2=v_x2_4, w=v_w_2} AuxVars[] AssignedVars[]" "[75] L12-->$Ultimate##0: 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]" "[62] $Ultimate##0-->L39-1: Formula: (and (= v_f_2 1) (< 0 v_d_3)) InVars {d=v_d_3, f=v_f_2} OutVars{d=v_d_3, f=v_f_2} AuxVars[] AssignedVars[]" "[64] L39-1-->L34: Formula: (< 0 v_f_4) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" "[59] L25-->thread1FINAL: Formula: (= (+ v_d_2 v_d_1) 0) InVars {d=v_d_2} OutVars{d=v_d_1} AuxVars[] AssignedVars[d]" [2025-04-26 18:42:21,854 INFO L754 eck$LassoCheckResult]: Loop: "[66] L34-->L35: Formula: (= v_x1_5 (+ v_x1_6 v_d_4)) InVars {x1=v_x1_6, d=v_d_4} OutVars{x1=v_x1_5, d=v_d_4} AuxVars[] AssignedVars[x1]" "[68] L35-->L35-2: Formula: (< v_z_2 v_x1_2) InVars {x1=v_x1_2, z=v_z_2} OutVars{x1=v_x1_2, z=v_z_2} AuxVars[] AssignedVars[]" "[71] L35-2-->L39-1: Formula: (< v_x1_4 v_y_2) InVars {y=v_y_2, x1=v_x1_4} OutVars{y=v_y_2, x1=v_x1_4} AuxVars[] AssignedVars[]" "[64] L39-1-->L34: Formula: (< 0 v_f_4) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" [2025-04-26 18:42:21,854 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1119453190, now seen corresponding path program 1 times [2025-04-26 18:42:21,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:21,854 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677465872] [2025-04-26 18:42:21,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:21,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:21,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:21,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:21,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:21,858 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:21,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:21,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:21,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:21,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:21,861 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2957340, now seen corresponding path program 2 times [2025-04-26 18:42:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:21,861 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024948952] [2025-04-26 18:42:21,862 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 18:42:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:21,863 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:21,864 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:21,865 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 18:42:21,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:21,865 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:21,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:21,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:21,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:21,867 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:21,868 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1244595307, now seen corresponding path program 1 times [2025-04-26 18:42:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:21,868 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316560009] [2025-04-26 18:42:21,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:21,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:21,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 18:42:21,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 18:42:21,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:21,872 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:21,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 18:42:21,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 18:42:21,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:21,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:21,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:21,960 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:21,961 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:21,961 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:21,961 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:21,961 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:21,961 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:21,961 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:21,961 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:21,961 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch.c.bpl_petrified1_Iteration4_Lasso [2025-04-26 18:42:21,961 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:21,961 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:21,962 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,964 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,978 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:21,984 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:22,043 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:22,044 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:22,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:22,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:22,046 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 18:42:22,048 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 18:42:22,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:22,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:22,060 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:22,061 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 18:42:22,066 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 18:42:22,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:22,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:22,068 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 18:42:22,069 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 18:42:22,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:22,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:22,081 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:22,081 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 18:42:22,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 18:42:22,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:22,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:22,089 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 18:42:22,091 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 18:42:22,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:22,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:22,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:22,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:22,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:22,111 INFO L229 MonitoredProcess]: Starting monitored process 24 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 18:42:22,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 18:42:22,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:22,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:22,318 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:22,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-04-26 18:42:22,325 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:22,326 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:22,326 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:22,326 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:22,326 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:22,326 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:22,326 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:22,326 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:22,326 INFO L132 ssoRankerPreferences]: Filename of dumped script: switch.c.bpl_petrified1_Iteration4_Lasso [2025-04-26 18:42:22,326 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:22,326 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:22,327 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:22,337 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:22,339 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:22,344 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:22,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:22,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:22,415 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:22,415 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:22,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:22,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:22,417 INFO L229 MonitoredProcess]: Starting monitored process 25 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 18:42:22,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 18:42:22,420 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 18:42:22,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:22,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:22,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:22,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:22,433 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 18:42:22,433 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 18:42:22,438 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:22,444 INFO L436 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-04-26 18:42:22,444 INFO L437 ModelExtractionUtils]: 7 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2025-04-26 18:42:22,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:22,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:22,446 INFO L229 MonitoredProcess]: Starting monitored process 26 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 18:42:22,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 18:42:22,447 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:22,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-04-26 18:42:22,463 INFO L439 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2025-04-26 18:42:22,463 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:22,463 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 18:42:22,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 18:42:22,471 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2025-04-26 18:42:22,505 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:22,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:22,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:22,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:22,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:22,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:22,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:22,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:42:22,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:42:22,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:22,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:22,532 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 18:42:22,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:22,580 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 18:42:22,580 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 18:42:22,580 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 49 states and 76 transitions. cyclomatic complexity: 36 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 18:42:22,620 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 49 states and 76 transitions. cyclomatic complexity: 36. 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 67 states and 98 transitions. Complement of second has 7 states. [2025-04-26 18:42:22,624 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 18:42:22,625 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 18:42:22,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2025-04-26 18:42:22,625 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 18:42:22,625 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:22,626 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2025-04-26 18:42:22,626 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:22,626 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 8 letters. [2025-04-26 18:42:22,626 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:22,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 98 transitions. [2025-04-26 18:42:22,627 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:22,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 0 states and 0 transitions. [2025-04-26 18:42:22,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:42:22,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:42:22,627 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:42:22,627 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:42:22,627 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:22,627 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:22,627 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:22,627 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 18:42:22,627 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:42:22,627 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:22,627 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:42:22,637 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 18:42:22,638 INFO L201 PluginConnector]: Adding new model switch.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:42:22 BoogieIcfgContainer [2025-04-26 18:42:22,638 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:42:22,639 INFO L158 Benchmark]: Toolchain (without parser) took 2942.43ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 84.6MB in the beginning and 97.8MB in the end (delta: -13.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:22,639 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.81ms. Allocated memory is still 159.4MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:22,639 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.37ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 82.8MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:42:22,639 INFO L158 Benchmark]: Boogie Preprocessor took 18.37ms. Allocated memory is still 159.4MB. Free memory was 82.8MB in the beginning and 81.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:22,639 INFO L158 Benchmark]: RCFGBuilder took 154.87ms. Allocated memory is still 159.4MB. Free memory was 81.8MB in the beginning and 73.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 18:42:22,640 INFO L158 Benchmark]: BuchiAutomizer took 2731.57ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 72.8MB in the beginning and 97.8MB in the end (delta: -25.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:22,640 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 0.81ms. Allocated memory is still 159.4MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.37ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 82.8MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.37ms. Allocated memory is still 159.4MB. Free memory was 82.8MB in the beginning and 81.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 154.87ms. Allocated memory is still 159.4MB. Free memory was 81.8MB in the beginning and 73.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2731.57ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 72.8MB in the beginning and 97.8MB in the end (delta: -25.0MB). 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 2.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. 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, 29 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, 85 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 136 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 70 mSDtfsCounter, 63 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital31 mio100 ax100 hnf100 lsp69 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf95 smp100 dnf100 smp100 tf103 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 138, Number of transitions in reduction automaton: 99, Number of states in reduction automaton: 61, 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 w + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * d + -1 * x1 + y 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 18:42:22,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...