/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/4_plus_thr/pp6.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:44:16,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:44:16,385 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:44:16,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:44:16,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:44:16,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:44:16,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:44:16,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:44:16,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:44:16,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:44:16,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:44:16,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:44:16,411 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:44:16,411 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:44:16,412 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:44:16,412 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:44:16,412 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:44:16,412 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:44:16,412 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:44:16,412 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:44:16,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:44:16,412 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:44:16,412 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:44:16,412 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:44:16,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:44:16,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:44:16,413 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:44:16,414 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:44:16,414 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:44:16,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:44:16,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:44:16,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:44:16,672 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:44:16,673 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:44:16,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pp6.c.bpl [2025-04-26 18:44:16,674 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pp6.c.bpl' [2025-04-26 18:44:16,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:44:16,700 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:44:16,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:44:16,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:44:16,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:44:16,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,738 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:44:16,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:44:16,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:44:16,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:44:16,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:44:16,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,751 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:44:16,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:44:16,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:44:16,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:44:16,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/1) ... [2025-04-26 18:44:16,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:44:16,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:16,803 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 18:44:16,807 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 18:44:16,829 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:44:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:44:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:44:16,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:44:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:44:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:44:16,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:44:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:44:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:44:16,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:44:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:44:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:44:16,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 18:44:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 18:44:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 18:44:16,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 18:44:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 18:44:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 18:44:16,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 18:44:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 18:44:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 18:44:16,831 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 18:44:16,872 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:44:16,874 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:44:17,001 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:44:17,002 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:44:17,012 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:44:17,012 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:44:17,013 INFO L201 PluginConnector]: Adding new model pp6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:44:17 BoogieIcfgContainer [2025-04-26 18:44:17,013 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:44:17,013 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:44:17,013 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:44:17,020 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:44:17,021 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:44:17,021 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:44:16" (1/2) ... [2025-04-26 18:44:17,022 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5890976d and model type pp6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:44:17, skipping insertion in model container [2025-04-26 18:44:17,022 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:44:17,022 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pp6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:44:17" (2/2) ... [2025-04-26 18:44:17,023 INFO L376 chiAutomizerObserver]: Analyzing ICFG pp6.c.bpl [2025-04-26 18:44:17,089 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-26 18:44:17,122 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:44:17,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:44:17,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:17,124 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 18:44:17,125 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 18:44:17,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 62 transitions, 166 flow [2025-04-26 18:44:17,212 INFO L116 PetriNetUnfolderBase]: 6/50 cut-off events. [2025-04-26 18:44:17,214 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-26 18:44:17,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 50 events. 6/50 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2025-04-26 18:44:17,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 62 transitions, 166 flow [2025-04-26 18:44:17,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 136 flow [2025-04-26 18:44:17,225 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 63 places, 50 transitions, 136 flow [2025-04-26 18:44:17,226 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 50 transitions, 136 flow [2025-04-26 18:44:19,570 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65320 states, 65319 states have (on average 5.942834397342274) internal successors, (in total 388180), 65319 states have internal predecessors, (388180), 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 18:44:19,710 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 65320 states, 65319 states have (on average 5.942834397342274) internal successors, (in total 388180), 65319 states have internal predecessors, (388180), 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 18:44:19,712 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:44:23,724 WARN L140 AmpleReduction]: Number of pruned transitions: 230031 [2025-04-26 18:44:23,724 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:44:23,725 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 16276 [2025-04-26 18:44:23,725 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:44 [2025-04-26 18:44:23,725 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:48999 [2025-04-26 18:44:23,725 WARN L145 AmpleReduction]: Times succ was already a loop node:11332 [2025-04-26 18:44:23,725 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:44496 [2025-04-26 18:44:23,725 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:44:23,845 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 65320 states, 65319 states have (on average 2.421179136239073) internal successors, (in total 158149), 65319 states have internal predecessors, (158149), 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 18:44:23,852 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:44:23,853 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:44:23,853 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:44:23,853 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:44:23,853 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:44:23,853 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:44:23,853 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:44:23,853 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:44:23,986 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 65320 states, 65319 states have (on average 2.421179136239073) internal successors, (in total 158149), 65319 states have internal predecessors, (158149), 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 18:44:25,175 INFO L131 ngComponentsAnalysis]: Automaton has 3318 accepting balls. 48846 [2025-04-26 18:44:25,176 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:25,176 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:25,182 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:44:25,182 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:25,182 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:44:25,284 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 65320 states, 65319 states have (on average 2.421179136239073) internal successors, (in total 158149), 65319 states have internal predecessors, (158149), 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 18:44:26,064 INFO L131 ngComponentsAnalysis]: Automaton has 3318 accepting balls. 48846 [2025-04-26 18:44:26,065 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:26,065 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:26,066 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:44:26,066 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:26,072 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[162] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" [2025-04-26 18:44:26,072 INFO L754 eck$LassoCheckResult]: Loop: "[119] L34-->L36: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[121] L36-->L37: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[123] L37-->L34: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 18:44:26,078 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:26,079 INFO L85 PathProgramCache]: Analyzing trace with hash 3913, now seen corresponding path program 1 times [2025-04-26 18:44:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:26,085 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490008725] [2025-04-26 18:44:26,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:26,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:26,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:26,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:26,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:26,141 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:26,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:26,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:26,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:26,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:26,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:26,162 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash 148024, now seen corresponding path program 1 times [2025-04-26 18:44:26,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:26,163 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722268480] [2025-04-26 18:44:26,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:26,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:26,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:26,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:26,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:26,174 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:26,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:26,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:26,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:26,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:26,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:26,181 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash 116690416, now seen corresponding path program 1 times [2025-04-26 18:44:26,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:26,182 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826961945] [2025-04-26 18:44:26,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:26,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:26,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:44:26,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:44:26,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:26,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:26,190 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:26,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:44:26,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:44:26,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:26,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:26,196 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:26,304 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:26,306 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:26,306 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:26,306 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:26,306 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:26,306 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:26,306 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:26,306 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:26,306 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:44:26,306 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:26,306 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:26,328 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:26,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:26,407 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:26,408 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:26,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:26,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:26,423 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 18:44:26,431 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 18:44:26,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:26,432 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:26,472 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 18:44:26,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:26,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:26,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:26,481 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 18:44:26,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:26,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:26,547 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:44:26,547 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 18:44:26,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:26,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:26,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:26,560 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 18:44:26,563 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 18:44:26,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:26,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:26,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:26,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:26,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:26,590 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 18:44:26,591 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 18:44:26,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:26,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:26,680 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:26,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 18:44:26,687 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:26,687 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:26,687 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:26,687 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:26,687 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:26,687 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:26,687 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:26,687 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:26,687 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:44:26,687 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:26,687 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:26,688 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:26,692 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:26,755 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:26,762 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:26,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:26,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:26,770 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 18:44:26,775 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 18:44:26,775 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 18:44:26,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:26,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:26,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:26,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:26,798 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:26,806 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:26,806 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:26,810 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:44:26,820 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 18:44:26,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:26,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:26,822 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 18:44:26,828 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 18:44:26,833 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 18:44:26,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:26,858 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:26,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:26,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:26,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:26,859 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:26,859 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:26,866 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:26,876 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:44:26,877 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:44:26,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:26,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:26,902 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 18:44:26,903 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 18:44:26,904 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:26,908 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:44:26,908 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 18:44:26,909 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:26,909 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:26,909 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 18:44:26,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:26,918 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:26,940 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:26,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:26,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:26,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:26,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:26,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:26,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:26,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:26,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:26,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:26,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:26,986 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:26,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:27,085 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 18:44:27,120 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:44:27,251 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 65320 states, 65319 states have (on average 2.421179136239073) internal successors, (in total 158149), 65319 states have internal predecessors, (158149), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 18:44:29,306 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 65320 states, 65319 states have (on average 2.421179136239073) internal successors, (in total 158149), 65319 states have internal predecessors, (158149), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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) Result 133750 states and 325630 transitions. Complement of second has 6 states. [2025-04-26 18:44:29,307 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 18:44:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 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 18:44:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-04-26 18:44:29,315 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 18:44:29,315 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:29,315 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 18:44:29,315 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:29,315 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 18:44:29,316 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:29,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 133750 states and 325630 transitions. [2025-04-26 18:44:30,790 INFO L131 ngComponentsAnalysis]: Automaton has 1953 accepting balls. 20853 [2025-04-26 18:44:31,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 133750 states to 84703 states and 205440 transitions. [2025-04-26 18:44:31,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42292 [2025-04-26 18:44:32,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54410 [2025-04-26 18:44:32,061 INFO L74 IsDeterministic]: Start isDeterministic. Operand 84703 states and 205440 transitions. [2025-04-26 18:44:32,061 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:44:32,061 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84703 states and 205440 transitions. [2025-04-26 18:44:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84703 states and 205440 transitions. [2025-04-26 18:44:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84703 to 78644. [2025-04-26 18:44:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78644 states, 78644 states have (on average 2.5352347286506283) internal successors, (in total 199381), 78643 states have internal predecessors, (199381), 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 18:44:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78644 states to 78644 states and 199381 transitions. [2025-04-26 18:44:35,152 INFO L240 hiAutomatonCegarLoop]: Abstraction has 78644 states and 199381 transitions. [2025-04-26 18:44:35,152 INFO L438 stractBuchiCegarLoop]: Abstraction has 78644 states and 199381 transitions. [2025-04-26 18:44:35,153 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:44:35,153 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78644 states and 199381 transitions. [2025-04-26 18:44:35,573 INFO L131 ngComponentsAnalysis]: Automaton has 1953 accepting balls. 20853 [2025-04-26 18:44:35,574 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:35,574 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:35,575 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 18:44:35,575 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:35,575 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[162] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[118] L34-->L39: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[120] L39-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[122] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[165] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" [2025-04-26 18:44:35,575 INFO L754 eck$LassoCheckResult]: Loop: "[125] L45-->L47: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[127] L47-->L48: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[129] L48-->L45: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 18:44:35,576 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:35,576 INFO L85 PathProgramCache]: Analyzing trace with hash -677595018, now seen corresponding path program 1 times [2025-04-26 18:44:35,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:35,576 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654803234] [2025-04-26 18:44:35,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:35,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:44:35,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:44:35,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:35,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:35,581 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:35,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:44:35,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:44:35,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:35,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:35,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:35,586 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:35,587 INFO L85 PathProgramCache]: Analyzing trace with hash 153982, now seen corresponding path program 1 times [2025-04-26 18:44:35,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:35,587 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440755093] [2025-04-26 18:44:35,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:35,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:35,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:35,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:35,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:35,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:35,594 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:35,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:35,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:35,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:35,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:35,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:35,598 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash 113234153, now seen corresponding path program 1 times [2025-04-26 18:44:35,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:35,599 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606033231] [2025-04-26 18:44:35,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:35,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:35,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:44:35,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:44:35,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:35,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:35,608 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:35,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:44:35,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:44:35,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:35,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:35,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:35,633 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:35,634 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:35,634 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:35,634 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:35,634 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:35,634 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:35,634 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:35,634 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:35,634 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:44:35,634 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:35,634 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:35,634 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:35,638 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:35,662 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:35,663 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:35,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:35,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:35,666 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 18:44:35,668 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 18:44:35,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:35,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:35,689 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 18:44:35,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:35,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:35,691 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 18:44:35,693 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 18:44:35,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:35,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:35,729 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:44:35,729 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 18:44:35,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:35,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:35,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:35,737 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 18:44:35,737 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 18:44:35,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:35,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:35,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:35,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:35,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:35,760 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 18:44:35,761 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 18:44:35,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:35,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:35,831 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:35,835 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 18:44:35,835 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:35,835 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:35,835 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:35,835 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:35,835 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:35,835 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:35,835 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:35,835 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:35,836 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:44:35,836 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:35,836 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:35,836 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:35,840 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:35,869 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:35,870 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:35,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:35,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:35,875 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 18:44:35,877 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 18:44:35,878 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 18:44:35,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:35,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:35,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:35,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:35,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:35,889 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:35,889 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:35,891 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:44:35,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:35,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:35,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:35,899 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 18:44:35,901 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 18:44:35,902 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 18:44:35,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:35,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:35,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:35,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:35,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:35,913 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:35,913 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:35,915 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:35,917 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:44:35,918 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:44:35,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:35,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:35,923 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 18:44:35,924 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 18:44:35,925 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:35,929 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 18:44:35,929 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:35,929 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:35,929 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 18:44:35,937 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 18:44:35,939 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:35,951 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:35,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:44:35,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:44:35,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:35,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:35,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:35,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:35,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:35,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:35,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:35,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:35,980 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:35,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:36,012 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 18:44:36,013 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:44:36,013 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 78644 states and 199381 transitions. cyclomatic complexity: 123812 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 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 18:44:37,460 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 78644 states and 199381 transitions. cyclomatic complexity: 123812. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 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 174573 states and 437486 transitions. Complement of second has 6 states. [2025-04-26 18:44:37,460 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 18:44:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 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 18:44:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2025-04-26 18:44:37,461 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 126 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 18:44:37,461 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:37,461 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 126 transitions. Stem has 9 letters. Loop has 3 letters. [2025-04-26 18:44:37,462 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:37,462 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 126 transitions. Stem has 6 letters. Loop has 6 letters. [2025-04-26 18:44:37,462 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:37,462 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174573 states and 437486 transitions. [2025-04-26 18:44:39,399 INFO L131 ngComponentsAnalysis]: Automaton has 1015 accepting balls. 7635 [2025-04-26 18:44:40,396 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174573 states to 115160 states and 289406 transitions. [2025-04-26 18:44:40,397 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44136 [2025-04-26 18:44:40,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51163 [2025-04-26 18:44:40,546 INFO L74 IsDeterministic]: Start isDeterministic. Operand 115160 states and 289406 transitions. [2025-04-26 18:44:40,546 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:44:40,546 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115160 states and 289406 transitions. [2025-04-26 18:44:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115160 states and 289406 transitions. [2025-04-26 18:44:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115160 to 108538. [2025-04-26 18:44:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108538 states, 108538 states have (on average 2.539552967624242) internal successors, (in total 275638), 108537 states have internal predecessors, (275638), 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 18:44:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108538 states to 108538 states and 275638 transitions. [2025-04-26 18:44:43,328 INFO L240 hiAutomatonCegarLoop]: Abstraction has 108538 states and 275638 transitions. [2025-04-26 18:44:43,328 INFO L438 stractBuchiCegarLoop]: Abstraction has 108538 states and 275638 transitions. [2025-04-26 18:44:43,328 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:44:43,328 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 108538 states and 275638 transitions. [2025-04-26 18:44:44,025 INFO L131 ngComponentsAnalysis]: Automaton has 1015 accepting balls. 7635 [2025-04-26 18:44:44,025 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:44,025 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:44,026 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:44:44,026 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:44,027 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[162] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[118] L34-->L39: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[120] L39-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[122] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[165] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[124] L45-->L50: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[126] L50-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[128] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[168] L18-->L56: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" [2025-04-26 18:44:44,027 INFO L754 eck$LassoCheckResult]: Loop: "[131] L56-->L58: Formula: (< v_y1_1 v_z1_3) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[133] L58-->L59: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[135] L59-->L56: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 18:44:44,027 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash -784739168, now seen corresponding path program 1 times [2025-04-26 18:44:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:44,027 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040004200] [2025-04-26 18:44:44,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:44,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:44,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 18:44:44,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 18:44:44,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:44,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:44,032 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:44,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 18:44:44,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 18:44:44,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:44,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:44,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:44,036 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:44,036 INFO L85 PathProgramCache]: Analyzing trace with hash 159940, now seen corresponding path program 1 times [2025-04-26 18:44:44,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:44,036 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225830953] [2025-04-26 18:44:44,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:44,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:44,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:44,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:44,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:44,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:44,039 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:44,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:44,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:44,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:44,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:44,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:44,041 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:44,041 INFO L85 PathProgramCache]: Analyzing trace with hash -657431611, now seen corresponding path program 1 times [2025-04-26 18:44:44,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:44,041 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459050601] [2025-04-26 18:44:44,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:44,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:44,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-26 18:44:44,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-26 18:44:44,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:44,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:44,046 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:44,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-26 18:44:44,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-26 18:44:44,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:44,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:44,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:44,073 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:44,073 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:44,073 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:44,073 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:44,073 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:44,073 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:44,073 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:44,074 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:44,074 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:44:44,074 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:44,074 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:44,074 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:44,079 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:44,099 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:44,099 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:44,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:44,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:44,101 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 18:44:44,103 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 18:44:44,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:44,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:44,120 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 18:44:44,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:44,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:44,122 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 18:44:44,123 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 18:44:44,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:44,125 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:44,202 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:44,213 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 18:44:44,213 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:44,213 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:44,213 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:44,213 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:44,213 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:44,213 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:44,213 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:44,213 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:44,213 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:44:44,214 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:44,214 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:44,214 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:44,231 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:44,267 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:44,268 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:44,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:44,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:44,270 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 18:44:44,271 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 18:44:44,272 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 18:44:44,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:44,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:44,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:44,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:44,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:44,283 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:44,283 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:44,287 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:44,290 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:44:44,290 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:44:44,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:44,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:44,293 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 18:44:44,294 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 18:44:44,295 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:44,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-04-26 18:44:44,298 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:44,298 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:44,298 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, y1) = 1*z1 - 1*y1 Supporting invariants [] [2025-04-26 18:44:44,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:44,305 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:44,316 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:44,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 18:44:44,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 18:44:44,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:44,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:44,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:44,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:44,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:44,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:44,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:44,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:44,348 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:44,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:44,380 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 18:44:44,381 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:44:44,381 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 108538 states and 275638 transitions. cyclomatic complexity: 170371 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 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 18:44:46,391 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 108538 states and 275638 transitions. cyclomatic complexity: 170371. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 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 254349 states and 639058 transitions. Complement of second has 6 states. [2025-04-26 18:44:46,392 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 18:44:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 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 18:44:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2025-04-26 18:44:46,393 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 131 transitions. Stem has 10 letters. Loop has 3 letters. [2025-04-26 18:44:46,393 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:46,393 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 131 transitions. Stem has 13 letters. Loop has 3 letters. [2025-04-26 18:44:46,393 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:46,393 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 131 transitions. Stem has 10 letters. Loop has 6 letters. [2025-04-26 18:44:46,393 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:46,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 254349 states and 639058 transitions. [2025-04-26 18:44:48,777 INFO L131 ngComponentsAnalysis]: Automaton has 483 accepting balls. 2583 [2025-04-26 18:44:50,298 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 254349 states to 159193 states and 396243 transitions. [2025-04-26 18:44:50,298 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46160 [2025-04-26 18:44:50,605 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49665 [2025-04-26 18:44:50,605 INFO L74 IsDeterministic]: Start isDeterministic. Operand 159193 states and 396243 transitions. [2025-04-26 18:44:50,605 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:44:50,605 INFO L218 hiAutomatonCegarLoop]: Abstraction has 159193 states and 396243 transitions. [2025-04-26 18:44:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159193 states and 396243 transitions. [2025-04-26 18:44:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159193 to 154633. [2025-04-26 18:44:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154633 states, 154633 states have (on average 2.5136678458026425) internal successors, (in total 388696), 154632 states have internal predecessors, (388696), 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 18:44:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154633 states to 154633 states and 388696 transitions. [2025-04-26 18:44:53,845 INFO L240 hiAutomatonCegarLoop]: Abstraction has 154633 states and 388696 transitions. [2025-04-26 18:44:53,845 INFO L438 stractBuchiCegarLoop]: Abstraction has 154633 states and 388696 transitions. [2025-04-26 18:44:53,845 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:44:53,845 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 154633 states and 388696 transitions. [2025-04-26 18:44:54,764 INFO L131 ngComponentsAnalysis]: Automaton has 483 accepting balls. 2583 [2025-04-26 18:44:54,764 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:54,764 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:54,765 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:44:54,765 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:44:54,765 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[162] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[118] L34-->L39: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[120] L39-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[122] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[165] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[124] L45-->L50: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[126] L50-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[128] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[168] L18-->L56: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" "[130] L56-->L61: Formula: (<= v_z1_4 v_y1_4) InVars {y1=v_y1_4, z1=v_z1_4} OutVars{y1=v_y1_4, z1=v_z1_4} AuxVars[] AssignedVars[]" "[132] L61-->thread3FINAL: Formula: (= v_f_5 (+ v_f_6 1)) InVars {f=v_f_6} OutVars{f=v_f_5} AuxVars[] AssignedVars[f]" "[134] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[171] L19-->L67: Formula: (and (= v_thread4Thread1of1ForFork5_thidvar2_2 4) (= v_thread4Thread1of1ForFork5_thidvar0_2 4) (= v_thread4Thread1of1ForFork5_thidvar1_2 4) (= v_thread4Thread1of1ForFork5_thidvar3_2 4)) InVars {} OutVars{thread4Thread1of1ForFork5_thidvar3=v_thread4Thread1of1ForFork5_thidvar3_2, thread4Thread1of1ForFork5_thidvar2=v_thread4Thread1of1ForFork5_thidvar2_2, thread4Thread1of1ForFork5_thidvar1=v_thread4Thread1of1ForFork5_thidvar1_2, thread4Thread1of1ForFork5_thidvar0=v_thread4Thread1of1ForFork5_thidvar0_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork5_thidvar3, thread4Thread1of1ForFork5_thidvar2, thread4Thread1of1ForFork5_thidvar1, thread4Thread1of1ForFork5_thidvar0]" [2025-04-26 18:44:54,765 INFO L754 eck$LassoCheckResult]: Loop: "[137] L67-->L69: Formula: (< v_y2_1 v_z1_5) InVars {y2=v_y2_1, z1=v_z1_5} OutVars{y2=v_y2_1, z1=v_z1_5} AuxVars[] AssignedVars[]" "[139] L69-->L70: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[141] L70-->L67: Formula: (= v_c_7 (+ v_c_8 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-04-26 18:44:54,765 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:54,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1094425927, now seen corresponding path program 1 times [2025-04-26 18:44:54,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:54,765 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789855836] [2025-04-26 18:44:54,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:54,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:54,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 18:44:54,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 18:44:54,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:54,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:54,770 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:54,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 18:44:54,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 18:44:54,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:54,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:54,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:54,775 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:54,775 INFO L85 PathProgramCache]: Analyzing trace with hash 165898, now seen corresponding path program 1 times [2025-04-26 18:44:54,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:54,775 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151714132] [2025-04-26 18:44:54,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:54,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:54,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:54,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:54,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:54,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:54,778 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:54,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:54,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:54,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:54,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:54,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:54,780 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash 946183428, now seen corresponding path program 1 times [2025-04-26 18:44:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:54,780 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196439035] [2025-04-26 18:44:54,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:54,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-26 18:44:54,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-26 18:44:54,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:54,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:54,784 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:54,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-26 18:44:54,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-26 18:44:54,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:54,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:54,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:54,812 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:54,813 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:54,813 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:54,813 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:54,813 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:54,813 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:54,813 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:54,813 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:54,813 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:44:54,813 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:54,813 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:54,813 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:54,818 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:54,840 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:54,840 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:54,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:54,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:54,844 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 18:44:54,845 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 18:44:54,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:54,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:54,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-04-26 18:44:54,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:54,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:54,864 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 18:44:54,866 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 18:44:54,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:54,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:54,929 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:54,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:54,934 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:54,934 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:54,934 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:54,934 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:54,934 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:54,934 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:54,934 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:54,934 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:54,934 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration4_Loop [2025-04-26 18:44:54,934 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:54,934 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:54,935 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:54,944 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:54,966 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:54,967 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:54,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:54,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:54,969 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 18:44:54,971 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 18:44:54,977 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 18:44:54,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:54,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:54,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:54,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:54,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:54,988 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:54,988 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:54,996 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:54,998 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:44:54,998 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:44:54,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:54,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:55,000 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 18:44:55,003 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:55,173 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:44:55,174 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 18:44:55,174 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 18:44:55,174 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:55,174 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:55,174 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, y2) = 1*z1 - 1*y2 Supporting invariants [] [2025-04-26 18:44:55,180 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 18:44:55,180 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:55,193 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:55,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 18:44:55,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 18:44:55,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:55,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:55,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:55,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:55,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:55,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:55,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:55,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:55,233 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:55,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:55,258 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 18:44:55,258 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:44:55,258 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 154633 states and 388696 transitions. cyclomatic complexity: 238057 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (in total 17), 4 states have internal predecessors, (17), 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 18:44:57,791 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 154633 states and 388696 transitions. cyclomatic complexity: 238057. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (in total 17), 4 states have internal predecessors, (17), 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 363671 states and 900952 transitions. Complement of second has 6 states. [2025-04-26 18:44:57,792 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 18:44:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (in total 17), 4 states have internal predecessors, (17), 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 18:44:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-04-26 18:44:57,792 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 136 transitions. Stem has 14 letters. Loop has 3 letters. [2025-04-26 18:44:57,792 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:57,792 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 136 transitions. Stem has 17 letters. Loop has 3 letters. [2025-04-26 18:44:57,793 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:57,793 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 136 transitions. Stem has 14 letters. Loop has 6 letters. [2025-04-26 18:44:57,793 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:57,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 363671 states and 900952 transitions. [2025-04-26 18:45:01,087 INFO L131 ngComponentsAnalysis]: Automaton has 203 accepting balls. 795 [2025-04-26 18:45:02,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 363671 states to 210583 states and 516698 transitions. [2025-04-26 18:45:02,685 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48762 [2025-04-26 18:45:02,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50551 [2025-04-26 18:45:02,782 INFO L74 IsDeterministic]: Start isDeterministic. Operand 210583 states and 516698 transitions. [2025-04-26 18:45:02,783 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:45:02,783 INFO L218 hiAutomatonCegarLoop]: Abstraction has 210583 states and 516698 transitions. [2025-04-26 18:45:03,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210583 states and 516698 transitions. [2025-04-26 18:45:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210583 to 206737. [2025-04-26 18:45:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206737 states, 206737 states have (on average 2.474936755394535) internal successors, (in total 511661), 206736 states have internal predecessors, (511661), 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 18:45:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206737 states to 206737 states and 511661 transitions. [2025-04-26 18:45:07,084 INFO L240 hiAutomatonCegarLoop]: Abstraction has 206737 states and 511661 transitions. [2025-04-26 18:45:07,084 INFO L438 stractBuchiCegarLoop]: Abstraction has 206737 states and 511661 transitions. [2025-04-26 18:45:07,084 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 18:45:07,084 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 206737 states and 511661 transitions. [2025-04-26 18:45:08,067 INFO L131 ngComponentsAnalysis]: Automaton has 203 accepting balls. 795 [2025-04-26 18:45:08,067 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:45:08,067 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:45:08,068 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:45:08,068 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:45:08,069 INFO L752 eck$LassoCheckResult]: Stem: "[90] $Ultimate##0-->L17: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[162] L17-->L34: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[118] L34-->L39: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[120] L39-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[122] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[165] L17-1-->L45: Formula: (and (= v_thread2Thread1of1ForFork3_thidvar0_2 2) (= v_thread2Thread1of1ForFork3_thidvar1_2 2)) InVars {} OutVars{thread2Thread1of1ForFork3_thidvar0=v_thread2Thread1of1ForFork3_thidvar0_2, thread2Thread1of1ForFork3_thidvar1=v_thread2Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_thidvar0, thread2Thread1of1ForFork3_thidvar1]" "[124] L45-->L50: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[126] L50-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[128] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[168] L18-->L56: Formula: (and (= v_thread3Thread1of1ForFork4_thidvar0_2 3) (= v_thread3Thread1of1ForFork4_thidvar1_2 3) (= v_thread3Thread1of1ForFork4_thidvar2_2 3)) InVars {} OutVars{thread3Thread1of1ForFork4_thidvar0=v_thread3Thread1of1ForFork4_thidvar0_2, thread3Thread1of1ForFork4_thidvar1=v_thread3Thread1of1ForFork4_thidvar1_2, thread3Thread1of1ForFork4_thidvar2=v_thread3Thread1of1ForFork4_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_thidvar0, thread3Thread1of1ForFork4_thidvar1, thread3Thread1of1ForFork4_thidvar2]" "[130] L56-->L61: Formula: (<= v_z1_4 v_y1_4) InVars {y1=v_y1_4, z1=v_z1_4} OutVars{y1=v_y1_4, z1=v_z1_4} AuxVars[] AssignedVars[]" "[132] L61-->thread3FINAL: Formula: (= v_f_5 (+ v_f_6 1)) InVars {f=v_f_6} OutVars{f=v_f_5} AuxVars[] AssignedVars[f]" "[134] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[171] L19-->L67: Formula: (and (= v_thread4Thread1of1ForFork5_thidvar2_2 4) (= v_thread4Thread1of1ForFork5_thidvar0_2 4) (= v_thread4Thread1of1ForFork5_thidvar1_2 4) (= v_thread4Thread1of1ForFork5_thidvar3_2 4)) InVars {} OutVars{thread4Thread1of1ForFork5_thidvar3=v_thread4Thread1of1ForFork5_thidvar3_2, thread4Thread1of1ForFork5_thidvar2=v_thread4Thread1of1ForFork5_thidvar2_2, thread4Thread1of1ForFork5_thidvar1=v_thread4Thread1of1ForFork5_thidvar1_2, thread4Thread1of1ForFork5_thidvar0=v_thread4Thread1of1ForFork5_thidvar0_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork5_thidvar3, thread4Thread1of1ForFork5_thidvar2, thread4Thread1of1ForFork5_thidvar1, thread4Thread1of1ForFork5_thidvar0]" "[136] L67-->L72: Formula: (<= v_z1_6 v_y2_4) InVars {y2=v_y2_4, z1=v_z1_6} OutVars{y2=v_y2_4, z1=v_z1_6} AuxVars[] AssignedVars[]" "[138] L72-->thread4FINAL: Formula: (= (+ v_f_9 1) v_f_8) InVars {f=v_f_9} OutVars{f=v_f_8} AuxVars[] AssignedVars[f]" "[140] thread4FINAL-->thread4EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[156] L20-->L78: Formula: (and (= 5 v_thread5Thread1of1ForFork0_thidvar4_2) (= 5 v_thread5Thread1of1ForFork0_thidvar3_2) (= 5 v_thread5Thread1of1ForFork0_thidvar2_2) (= 5 v_thread5Thread1of1ForFork0_thidvar1_2) (= 5 v_thread5Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thread5Thread1of1ForFork0_thidvar4=v_thread5Thread1of1ForFork0_thidvar4_2, thread5Thread1of1ForFork0_thidvar3=v_thread5Thread1of1ForFork0_thidvar3_2, thread5Thread1of1ForFork0_thidvar2=v_thread5Thread1of1ForFork0_thidvar2_2, thread5Thread1of1ForFork0_thidvar1=v_thread5Thread1of1ForFork0_thidvar1_2, thread5Thread1of1ForFork0_thidvar0=v_thread5Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread5Thread1of1ForFork0_thidvar4, thread5Thread1of1ForFork0_thidvar3, thread5Thread1of1ForFork0_thidvar2, thread5Thread1of1ForFork0_thidvar1, thread5Thread1of1ForFork0_thidvar0]" [2025-04-26 18:45:08,069 INFO L754 eck$LassoCheckResult]: Loop: "[143] L78-->L80: Formula: (< v_x3_1 v_z1_7) InVars {x3=v_x3_1, z1=v_z1_7} OutVars{x3=v_x3_1, z1=v_z1_7} AuxVars[] AssignedVars[]" "[145] L80-->L81: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[147] L81-->L78: Formula: (= (+ v_c_10 1) v_c_9) InVars {c=v_c_10} OutVars{c=v_c_9} AuxVars[] AssignedVars[c]" [2025-04-26 18:45:08,069 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:45:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash -733115431, now seen corresponding path program 1 times [2025-04-26 18:45:08,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:45:08,069 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913206967] [2025-04-26 18:45:08,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:45:08,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:45:08,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-26 18:45:08,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-26 18:45:08,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:45:08,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:45:08,075 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:45:08,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-26 18:45:08,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-26 18:45:08,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:45:08,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:45:08,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:45:08,080 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:45:08,080 INFO L85 PathProgramCache]: Analyzing trace with hash 171856, now seen corresponding path program 1 times [2025-04-26 18:45:08,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:45:08,080 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276677945] [2025-04-26 18:45:08,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:45:08,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:45:08,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:45:08,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:45:08,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:45:08,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:45:08,082 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:45:08,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:45:08,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:45:08,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:45:08,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:45:08,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:45:08,084 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:45:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash -332962696, now seen corresponding path program 1 times [2025-04-26 18:45:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:45:08,084 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91127527] [2025-04-26 18:45:08,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:45:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:45:08,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-26 18:45:08,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-26 18:45:08,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:45:08,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:45:08,090 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:45:08,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-26 18:45:08,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-26 18:45:08,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:45:08,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:45:08,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:45:08,116 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:45:08,117 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:45:08,117 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:45:08,117 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:45:08,117 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:45:08,117 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:45:08,117 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:45:08,117 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:45:08,117 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration5_Loop [2025-04-26 18:45:08,117 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:45:08,117 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:45:08,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:45:08,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:45:08,142 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:45:08,143 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:45:08,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:45:08,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:45:08,145 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 18:45:08,146 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 18:45:08,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:45:08,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:45:08,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-04-26 18:45:08,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:45:08,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:45:08,168 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 18:45:08,168 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 18:45:08,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:45:08,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:45:08,232 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:45:08,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-04-26 18:45:08,236 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:45:08,236 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:45:08,236 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:45:08,236 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:45:08,236 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:45:08,236 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:45:08,236 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:45:08,236 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:45:08,236 INFO L132 ssoRankerPreferences]: Filename of dumped script: pp6.c.bpl_petrified1_Iteration5_Loop [2025-04-26 18:45:08,236 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:45:08,236 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:45:08,237 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:45:08,242 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:45:08,263 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:45:08,263 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:45:08,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:45:08,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:45:08,265 INFO L229 MonitoredProcess]: Starting monitored process 27 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 18:45:08,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-04-26 18:45:08,267 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 18:45:08,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:45:08,276 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:45:08,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:45:08,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:45:08,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:45:08,277 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:45:08,277 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:45:08,279 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:45:08,280 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:45:08,280 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:45:08,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:45:08,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:45:08,284 INFO L229 MonitoredProcess]: Starting monitored process 28 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 18:45:08,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-04-26 18:45:08,286 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:45:08,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2025-04-26 18:45:08,289 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:45:08,289 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:45:08,289 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x3) = 1*z1 - 1*x3 Supporting invariants [] [2025-04-26 18:45:08,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-04-26 18:45:08,294 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:45:08,301 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:45:08,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-26 18:45:08,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-26 18:45:08,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:45:08,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:45:08,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:45:08,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:45:08,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:45:08,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:45:08,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:45:08,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:45:08,353 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:45:08,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:45:08,379 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 18:45:08,380 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 18:45:08,380 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 206737 states and 511661 transitions. cyclomatic complexity: 309898 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (in total 21), 4 states have internal predecessors, (21), 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 18:45:11,391 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 206737 states and 511661 transitions. cyclomatic complexity: 309898. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (in total 21), 4 states have internal predecessors, (21), 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 478954 states and 1164792 transitions. Complement of second has 6 states. [2025-04-26 18:45:11,392 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 18:45:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.25) internal successors, (in total 21), 4 states have internal predecessors, (21), 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 18:45:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2025-04-26 18:45:11,392 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 141 transitions. Stem has 18 letters. Loop has 3 letters. [2025-04-26 18:45:11,393 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:45:11,393 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 141 transitions. Stem has 21 letters. Loop has 3 letters. [2025-04-26 18:45:11,393 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:45:11,393 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 141 transitions. Stem has 18 letters. Loop has 6 letters. [2025-04-26 18:45:11,393 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:45:11,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 478954 states and 1164792 transitions. [2025-04-26 18:45:15,973 INFO L131 ngComponentsAnalysis]: Automaton has 63 accepting balls. 189 [2025-04-26 18:45:18,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 478954 states to 229042 states and 552264 transitions. [2025-04-26 18:45:18,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44739 [2025-04-26 18:45:18,611 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45693 [2025-04-26 18:45:18,611 INFO L74 IsDeterministic]: Start isDeterministic. Operand 229042 states and 552264 transitions. [2025-04-26 18:45:18,611 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:45:18,611 INFO L218 hiAutomatonCegarLoop]: Abstraction has 229042 states and 552264 transitions. [2025-04-26 18:45:18,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229042 states and 552264 transitions.