/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/3_thr/pc3.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:35,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:35,401 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:35,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:35,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:35,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:35,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:35,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:35,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:35,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:35,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:35,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:35,426 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:35,426 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:35,426 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:35,426 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:35,426 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:35,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:35,427 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:35,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:35,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:35,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:35,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:35,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:35,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:35,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:35,428 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:35,428 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:35,428 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:35,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:35,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:35,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:35,659 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:35,661 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:35,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/pc3.c.bpl [2025-04-26 18:42:35,664 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/pc3.c.bpl' [2025-04-26 18:42:35,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:35,678 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:35,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:35,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:35,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:35,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,711 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:35,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:35,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:35,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:35,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:35,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,724 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:35,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:35,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:35,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:35,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/1) ... [2025-04-26 18:42:35,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:35,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 18:42:35,788 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:35,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:35,788 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:35,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:35,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:35,789 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:42:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:42:35,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:42:35,789 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:35,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:35,789 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 18:42:35,825 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:35,826 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:35,886 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:35,886 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:35,894 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:35,894 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:35,895 INFO L201 PluginConnector]: Adding new model pc3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:35 BoogieIcfgContainer [2025-04-26 18:42:35,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:35,895 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:35,895 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:35,899 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:35,900 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:35,900 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:35" (1/2) ... [2025-04-26 18:42:35,901 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33598aa3 and model type pc3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:35, skipping insertion in model container [2025-04-26 18:42:35,901 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:35,901 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:35" (2/2) ... [2025-04-26 18:42:35,901 INFO L376 chiAutomizerObserver]: Analyzing ICFG pc3.c.bpl [2025-04-26 18:42:35,951 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-26 18:42:35,992 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:35,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:35,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:35,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:35,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 18:42:36,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 85 flow [2025-04-26 18:42:36,070 INFO L116 PetriNetUnfolderBase]: 3/26 cut-off events. [2025-04-26 18:42:36,072 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-26 18:42:36,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 26 events. 3/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-04-26 18:42:36,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 32 transitions, 85 flow [2025-04-26 18:42:36,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 70 flow [2025-04-26 18:42:36,080 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 33 places, 26 transitions, 70 flow [2025-04-26 18:42:36,081 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 70 flow [2025-04-26 18:42:36,128 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 304 states, 303 states have (on average 2.943894389438944) internal successors, (in total 892), 303 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,129 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 304 states, 303 states have (on average 2.943894389438944) internal successors, (in total 892), 303 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,130 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:42:36,245 WARN L140 AmpleReduction]: Number of pruned transitions: 392 [2025-04-26 18:42:36,246 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:42:36,246 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 67 [2025-04-26 18:42:36,246 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:22 [2025-04-26 18:42:36,246 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:212 [2025-04-26 18:42:36,246 WARN L145 AmpleReduction]: Times succ was already a loop node:19 [2025-04-26 18:42:36,246 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:99 [2025-04-26 18:42:36,246 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:42:36,250 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 302 states, 301 states have (on average 1.6511627906976745) internal successors, (in total 497), 301 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,258 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:42:36,258 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:42:36,258 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:42:36,258 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:42:36,258 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:42:36,258 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:42:36,258 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:42:36,259 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:42:36,260 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 302 states, 301 states have (on average 1.6511627906976745) internal successors, (in total 497), 301 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,280 INFO L131 ngComponentsAnalysis]: Automaton has 42 accepting balls. 210 [2025-04-26 18:42:36,281 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:36,281 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:36,285 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:36,285 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:36,285 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:42:36,286 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 302 states, 301 states have (on average 1.6511627906976745) internal successors, (in total 497), 301 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:36,295 INFO L131 ngComponentsAnalysis]: Automaton has 42 accepting balls. 210 [2025-04-26 18:42:36,295 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:36,295 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:36,295 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:42:36,296 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:36,302 INFO L752 eck$LassoCheckResult]: Stem: "[58] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[82] L14-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 18:42:36,303 INFO L754 eck$LassoCheckResult]: Loop: "[63] L25-->L27: 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[]" "[65] L27-->L28: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[67] L28-->L25: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 18:42:36,309 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2841, now seen corresponding path program 1 times [2025-04-26 18:42:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:36,314 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740923670] [2025-04-26 18:42:36,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:36,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:36,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:36,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:36,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,361 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:36,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:36,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:36,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:36,378 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash 92416, now seen corresponding path program 1 times [2025-04-26 18:42:36,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:36,378 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285759117] [2025-04-26 18:42:36,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:36,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:36,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:36,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:36,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,388 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:36,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:36,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:36,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:36,395 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash 84698856, now seen corresponding path program 1 times [2025-04-26 18:42:36,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:36,398 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414219875] [2025-04-26 18:42:36,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:36,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:36,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:36,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:36,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,404 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:36,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:42:36,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:42:36,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:36,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:36,505 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:36,506 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:36,506 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:36,506 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:36,506 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:36,506 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,506 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:36,506 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:36,506 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:36,506 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:36,507 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:36,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,551 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,590 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:36,590 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:36,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 18:42:36,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:36,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:36,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,619 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 18:42:36,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:36,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,655 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:36,656 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 18:42:36,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 18:42:36,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,664 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 18:42:36,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:36,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 18:42:36,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 18:42:36,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:36,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:36,754 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:36,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 18:42:36,758 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:36,759 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:36,759 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:36,759 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:36,759 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:36,759 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,759 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:36,759 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:36,759 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc3.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:36,759 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:36,759 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:36,760 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,763 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:36,821 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:36,824 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:36,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 18:42:36,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:36,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:36,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:36,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:36,850 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:36,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:36,854 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:36,854 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:36,856 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:36,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:36,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,865 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 18:42:36,868 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:36,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:36,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:36,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:36,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:36,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:36,879 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:36,879 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:36,883 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:36,885 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:36,885 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:42:36,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:36,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:36,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:36,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 18:42:36,891 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:36,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 18:42:36,894 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:36,894 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:36,894 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 18:42:36,899 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 18:42:36,902 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:36,919 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:36,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:36,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:36,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:36,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:36,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:36,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:36,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:36,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:36,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:36,936 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:36,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:36,998 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 18:42:37,000 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 302 states, 301 states have (on average 1.6511627906976745) internal successors, (in total 497), 301 states have internal predecessors, (497), 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 18:42:37,092 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 302 states, 301 states have (on average 1.6511627906976745) internal successors, (in total 497), 301 states have internal predecessors, (497), 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 618 states and 1038 transitions. Complement of second has 6 states. [2025-04-26 18:42:37,094 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:37,098 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 18:42:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-04-26 18:42:37,105 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 18:42:37,106 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:37,106 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 18:42:37,106 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:37,106 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 56 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 18:42:37,106 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:37,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 618 states and 1038 transitions. [2025-04-26 18:42:37,115 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 81 [2025-04-26 18:42:37,123 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 618 states to 343 states and 558 transitions. [2025-04-26 18:42:37,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 170 [2025-04-26 18:42:37,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 220 [2025-04-26 18:42:37,124 INFO L74 IsDeterministic]: Start isDeterministic. Operand 343 states and 558 transitions. [2025-04-26 18:42:37,124 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:37,124 INFO L218 hiAutomatonCegarLoop]: Abstraction has 343 states and 558 transitions. [2025-04-26 18:42:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states and 558 transitions. [2025-04-26 18:42:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 318. [2025-04-26 18:42:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 318 states have (on average 1.6761006289308176) internal successors, (in total 533), 317 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 533 transitions. [2025-04-26 18:42:37,160 INFO L240 hiAutomatonCegarLoop]: Abstraction has 318 states and 533 transitions. [2025-04-26 18:42:37,160 INFO L438 stractBuchiCegarLoop]: Abstraction has 318 states and 533 transitions. [2025-04-26 18:42:37,160 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:42:37,160 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 318 states and 533 transitions. [2025-04-26 18:42:37,163 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 81 [2025-04-26 18:42:37,163 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:37,163 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:37,163 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 18:42:37,163 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:37,163 INFO L752 eck$LassoCheckResult]: Stem: "[58] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[82] L14-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[62] L25-->L30: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[64] L30-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[66] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[85] L14-1-->L36: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 18:42:37,164 INFO L754 eck$LassoCheckResult]: Loop: "[69] L36-->L38: 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[]" "[71] L38-->L39: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[73] L39-->L36: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 18:42:37,165 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1669333458, now seen corresponding path program 1 times [2025-04-26 18:42:37,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:37,165 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615407721] [2025-04-26 18:42:37,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:37,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:37,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:37,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:37,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,171 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:37,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:37,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:37,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:37,177 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash 98374, now seen corresponding path program 1 times [2025-04-26 18:42:37,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:37,177 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947492502] [2025-04-26 18:42:37,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:37,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:37,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:37,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,183 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:37,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:37,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:37,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:37,188 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:37,188 INFO L85 PathProgramCache]: Analyzing trace with hash 313341689, now seen corresponding path program 1 times [2025-04-26 18:42:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:37,188 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999572079] [2025-04-26 18:42:37,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:37,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:42:37,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:42:37,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,197 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:37,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 18:42:37,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 18:42:37,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:37,230 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:37,230 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:37,230 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:37,230 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:37,230 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:37,230 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,230 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:37,230 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:37,230 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:37,230 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:37,230 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:37,231 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:37,234 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:37,261 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:37,261 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:37,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,263 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 18:42:37,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:37,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:37,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:37,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,285 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 18:42:37,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:37,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:37,321 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:37,321 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 18:42:37,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 18:42:37,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,328 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 18:42:37,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:37,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:37,349 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 18:42:37,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,351 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 18:42:37,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:37,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:37,417 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:37,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:37,422 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:37,422 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:37,422 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:37,422 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:37,422 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:37,422 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,422 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:37,422 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:37,422 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc3.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:37,423 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:37,423 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:37,423 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:37,428 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:37,455 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:37,455 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:37,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,457 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 18:42:37,459 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:37,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:37,468 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:37,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:37,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:37,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:37,470 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:37,470 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:37,471 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:37,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 18:42:37,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,479 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 18:42:37,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:37,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:37,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:37,491 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:37,491 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:37,491 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:37,492 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:37,492 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:37,494 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:37,495 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:37,496 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:42:37,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,497 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 18:42:37,500 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:37,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:37,504 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:37,504 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:37,504 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 18:42:37,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-04-26 18:42:37,510 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:37,525 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:37,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:37,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:37,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:37,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:37,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:37,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:37,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:37,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:37,546 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:37,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:37,576 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 18:42:37,576 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 318 states and 533 transitions. cyclomatic complexity: 251 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 18:42:37,609 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 318 states and 533 transitions. cyclomatic complexity: 251. 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 712 states and 1187 transitions. Complement of second has 6 states. [2025-04-26 18:42:37,609 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:37,610 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 18:42:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2025-04-26 18:42:37,610 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 58 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 18:42:37,610 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:37,610 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 58 transitions. Stem has 9 letters. Loop has 3 letters. [2025-04-26 18:42:37,610 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:37,610 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 58 transitions. Stem has 6 letters. Loop has 6 letters. [2025-04-26 18:42:37,610 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:37,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 712 states and 1187 transitions. [2025-04-26 18:42:37,614 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-04-26 18:42:37,617 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 712 states to 404 states and 664 transitions. [2025-04-26 18:42:37,617 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 156 [2025-04-26 18:42:37,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 183 [2025-04-26 18:42:37,617 INFO L74 IsDeterministic]: Start isDeterministic. Operand 404 states and 664 transitions. [2025-04-26 18:42:37,617 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:37,617 INFO L218 hiAutomatonCegarLoop]: Abstraction has 404 states and 664 transitions. [2025-04-26 18:42:37,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states and 664 transitions. [2025-04-26 18:42:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 379. [2025-04-26 18:42:37,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 379 states have (on average 1.6675461741424802) internal successors, (in total 632), 378 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 632 transitions. [2025-04-26 18:42:37,627 INFO L240 hiAutomatonCegarLoop]: Abstraction has 379 states and 632 transitions. [2025-04-26 18:42:37,627 INFO L438 stractBuchiCegarLoop]: Abstraction has 379 states and 632 transitions. [2025-04-26 18:42:37,627 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:42:37,627 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 379 states and 632 transitions. [2025-04-26 18:42:37,629 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-04-26 18:42:37,629 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:37,629 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:37,629 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:42:37,629 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:37,629 INFO L752 eck$LassoCheckResult]: Stem: "[58] $Ultimate##0-->L14: Formula: (= v_f_6 0) InVars {f=v_f_6} OutVars{f=v_f_6} AuxVars[] AssignedVars[]" "[82] L14-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[62] L25-->L30: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[64] L30-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[66] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[85] L14-1-->L36: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[68] L36-->L41: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[70] L41-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[72] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[88] L15-->$Ultimate##0: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[74] $Ultimate##0-->L48-1: Formula: (< 1 v_f_5) InVars {f=v_f_5} OutVars{f=v_f_5} AuxVars[] AssignedVars[]" [2025-04-26 18:42:37,630 INFO L754 eck$LassoCheckResult]: Loop: "[76] L48-1-->L50: 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[]" "[78] L50-->L51: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[79] L51-->L48-1: Formula: (= (+ v_c_5 1) v_c_6) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 18:42:37,630 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:37,630 INFO L85 PathProgramCache]: Analyzing trace with hash 472700938, now seen corresponding path program 1 times [2025-04-26 18:42:37,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:37,630 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934944767] [2025-04-26 18:42:37,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:37,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:37,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 18:42:37,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 18:42:37,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,634 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:37,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 18:42:37,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 18:42:37,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:37,638 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:37,638 INFO L85 PathProgramCache]: Analyzing trace with hash 105324, now seen corresponding path program 1 times [2025-04-26 18:42:37,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:37,638 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151447585] [2025-04-26 18:42:37,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:37,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:37,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:37,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:37,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,640 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:37,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:37,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:37,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:37,643 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:37,643 INFO L85 PathProgramCache]: Analyzing trace with hash -964044093, now seen corresponding path program 1 times [2025-04-26 18:42:37,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:37,643 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924657372] [2025-04-26 18:42:37,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:37,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:37,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 18:42:37,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 18:42:37,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,647 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:37,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 18:42:37,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 18:42:37,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:37,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:37,668 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:37,668 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:37,668 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:37,668 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:37,669 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:37,669 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,669 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:37,669 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:37,669 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:42:37,669 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:37,669 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:37,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:37,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:37,693 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:37,693 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:37,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,695 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 18:42:37,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:37,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:37,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:37,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,720 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 18:42:37,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:37,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:37,747 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:42:37,747 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=0}, {c=7}, {c=-8}] Lambdas: [0, 1, 1] Nus: [0, 0] [2025-04-26 18:42:37,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 18:42:37,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,754 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 18:42:37,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:37,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:37,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-04-26 18:42:37,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,776 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 18:42:37,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:37,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:37,844 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:37,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:37,848 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:37,848 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:37,848 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:37,848 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:37,848 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:37,848 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,848 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:37,848 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:37,848 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc3.c.bpl_petrified1_Iteration3_Loop [2025-04-26 18:42:37,848 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:37,848 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:37,849 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:37,852 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:37,875 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:37,875 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:37,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,881 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 18:42:37,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:37,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:37,895 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:37,895 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:37,895 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:37,895 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:37,896 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:37,897 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:37,898 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:42:37,903 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 18:42:37,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,905 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 18:42:37,909 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:42:37,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:37,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:37,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:37,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:37,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:37,919 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:37,920 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:37,921 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:37,923 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:37,923 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:37,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:37,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:37,925 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:37,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 18:42:37,926 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:37,929 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:42:37,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-04-26 18:42:37,929 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:37,929 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:37,929 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-04-26 18:42:37,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:37,935 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:37,948 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:37,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 18:42:37,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 18:42:37,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:37,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:37,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:37,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:37,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:37,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:37,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:37,974 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:37,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:42:38,007 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 18:42:38,008 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 379 states and 632 transitions. cyclomatic complexity: 287 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (in total 14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:38,044 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 379 states and 632 transitions. cyclomatic complexity: 287. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (in total 14), 4 states have internal predecessors, (14), 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 724 states and 1203 transitions. Complement of second has 6 states. [2025-04-26 18:42:38,044 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:42:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (in total 14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2025-04-26 18:42:38,045 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 61 transitions. Stem has 11 letters. Loop has 3 letters. [2025-04-26 18:42:38,045 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:38,045 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 61 transitions. Stem has 14 letters. Loop has 3 letters. [2025-04-26 18:42:38,045 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:38,045 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 61 transitions. Stem has 11 letters. Loop has 6 letters. [2025-04-26 18:42:38,045 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:38,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 724 states and 1203 transitions. [2025-04-26 18:42:38,049 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:38,049 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 724 states to 0 states and 0 transitions. [2025-04-26 18:42:38,049 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:42:38,049 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:42:38,049 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:42:38,049 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:42:38,049 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:38,049 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:38,049 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:38,049 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:42:38,049 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:42:38,049 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:38,049 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:42:38,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:38,060 INFO L201 PluginConnector]: Adding new model pc3.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:42:38 BoogieIcfgContainer [2025-04-26 18:42:38,061 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:42:38,061 INFO L158 Benchmark]: Toolchain (without parser) took 2383.10ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 86.9MB in the beginning and 33.5MB in the end (delta: 53.4MB). Peak memory consumption was 65.9MB. Max. memory is 8.0GB. [2025-04-26 18:42:38,061 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.93ms. Allocated memory is still 159.4MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:38,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.55ms. Allocated memory is still 159.4MB. Free memory was 86.8MB in the beginning and 84.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:38,062 INFO L158 Benchmark]: Boogie Preprocessor took 25.03ms. Allocated memory is still 159.4MB. Free memory was 84.9MB in the beginning and 83.9MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:42:38,062 INFO L158 Benchmark]: RCFGBuilder took 155.75ms. Allocated memory is still 159.4MB. Free memory was 83.9MB in the beginning and 74.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 18:42:38,062 INFO L158 Benchmark]: BuchiAutomizer took 2165.25ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 74.8MB in the beginning and 33.5MB in the end (delta: 41.3MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. [2025-04-26 18:42:38,063 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.93ms. Allocated memory is still 159.4MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.55ms. Allocated memory is still 159.4MB. Free memory was 86.8MB in the beginning and 84.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 25.03ms. Allocated memory is still 159.4MB. Free memory was 84.9MB in the beginning and 83.9MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 155.75ms. Allocated memory is still 159.4MB. Free memory was 83.9MB in the beginning and 74.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2165.25ms. Allocated memory was 159.4MB in the beginning and 167.8MB in the end (delta: 8.4MB). Free memory was 74.8MB in the beginning and 33.5MB in the end (delta: 41.3MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 50 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 206 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 75 IncrementalHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 94 mSDtfsCounter, 75 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.2s InitialAbstraction: Time to compute Ample Reduction [ms]: 259, Number of transitions in reduction automaton: 497, Number of states in reduction automaton: 302, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 18:42:38,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...