/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 ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:40:34,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:40:34,374 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:40:34,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:40:34,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:40:34,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:40:34,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:40:34,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:40:34,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:40:34,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:40:34,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:40:34,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:40:34,405 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:40:34,405 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:40:34,405 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:40:34,406 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:40:34,406 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:40:34,406 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:40:34,406 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:40:34,406 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:40:34,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:40:34,406 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:40:34,406 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:40:34,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:40:34,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:40:34,407 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:40:34,408 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:40:34,408 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:40:34,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:40:34,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:40:34,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:40:34,648 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:40:34,648 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:40:34,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl [2025-04-26 18:40:34,651 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier-loop.wvr.bpl' [2025-04-26 18:40:34,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:40:34,668 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:40:34,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:40:34,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:40:34,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:40:34,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,698 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:40:34,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:40:34,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:40:34,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:40:34,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:40:34,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,712 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,718 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:40:34,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:40:34,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:40:34,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:40:34,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/1) ... [2025-04-26 18:40:34,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:40:34,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:34,748 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 18:40:34,750 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 18:40:34,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:40:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:40:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:40:34,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:40:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:40:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:40:34,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:40:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:40:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:40:34,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:40:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:40:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:40:34,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 18:40:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 18:40:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 18:40:34,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 18:40:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 18:40:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 18:40:34,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 18:40:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 18:40:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 18:40:34,772 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 18:40:34,812 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:40:34,813 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:40:34,922 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:40:34,923 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:40:34,933 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:40:34,933 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2025-04-26 18:40:34,933 INFO L201 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:40:34 BoogieIcfgContainer [2025-04-26 18:40:34,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:40:34,934 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:40:34,934 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:40:34,938 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:40:34,938 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:40:34,938 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:40:34" (1/2) ... [2025-04-26 18:40:34,940 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b297fe8 and model type barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:40:34, skipping insertion in model container [2025-04-26 18:40:34,940 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:40:34,940 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:40:34" (2/2) ... [2025-04-26 18:40:34,941 INFO L376 chiAutomizerObserver]: Analyzing ICFG barrier-loop.wvr.bpl [2025-04-26 18:40:35,015 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-04-26 18:40:35,049 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:40:35,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:40:35,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:35,051 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 18:40:35,053 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 18:40:35,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 224 flow [2025-04-26 18:40:35,125 INFO L116 PetriNetUnfolderBase]: 8/61 cut-off events. [2025-04-26 18:40:35,126 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-26 18:40:35,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 61 events. 8/61 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 180 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2025-04-26 18:40:35,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 224 flow [2025-04-26 18:40:35,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 61 transitions, 170 flow [2025-04-26 18:40:35,134 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 72 places, 61 transitions, 170 flow [2025-04-26 18:40:35,135 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 61 transitions, 170 flow [2025-04-26 18:40:35,574 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10822 states, 10820 states have (on average 4.095101663585952) internal successors, (in total 44309), 10821 states have internal predecessors, (44309), 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 18:40:35,615 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 10822 states, 10820 states have (on average 4.095101663585952) internal successors, (in total 44309), 10821 states have internal predecessors, (44309), 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 18:40:35,621 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:40:36,694 WARN L140 AmpleReduction]: Number of pruned transitions: 10247 [2025-04-26 18:40:36,694 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:40:36,694 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 0 [2025-04-26 18:40:36,695 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:1383 [2025-04-26 18:40:36,695 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:4677 [2025-04-26 18:40:36,695 WARN L145 AmpleReduction]: Times succ was already a loop node:1435 [2025-04-26 18:40:36,695 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:1067 [2025-04-26 18:40:36,695 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:40:36,707 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 6061 states, 6059 states have (on average 2.3215051988777025) internal successors, (in total 14066), 6060 states have internal predecessors, (14066), 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 18:40:36,714 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:40:36,714 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:40:36,714 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:40:36,714 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:40:36,715 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:40:36,715 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:40:36,715 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:40:36,715 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:40:36,726 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6061 states, 6059 states have (on average 2.3215051988777025) internal successors, (in total 14066), 6060 states have internal predecessors, (14066), 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 18:40:36,839 INFO L131 ngComponentsAnalysis]: Automaton has 28 accepting balls. 5092 [2025-04-26 18:40:36,840 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:40:36,840 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:40:36,844 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:40:36,844 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:40:36,844 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:40:36,853 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6061 states, 6059 states have (on average 2.3215051988777025) internal successors, (in total 14066), 6060 states have internal predecessors, (14066), 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 18:40:36,922 INFO L131 ngComponentsAnalysis]: Automaton has 28 accepting balls. 5092 [2025-04-26 18:40:36,922 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:40:36,922 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:40:36,922 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:40:36,922 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:40:36,926 INFO L752 eck$LassoCheckResult]: Stem: "[97] $Ultimate##0-->L116: Formula: (and (= v_x_0_3 v_x_8_1) (= v_y_9_1 v_y_1_3)) InVars {y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} OutVars{y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} AuxVars[] AssignedVars[]" "[186] L116-->$Ultimate##0: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[130] $Ultimate##0-->L59: Formula: (and (not v_f1_2_6) (not v_f2_3_6)) InVars {} OutVars{f2_3=v_f2_3_6, f1_2=v_f1_2_6} AuxVars[] AssignedVars[f2_3, f1_2]" "[198] L59-->L29: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_4) (= 2 v_thread2Thread1of1ForFork0_thidvar1_4)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-04-26 18:40:36,927 INFO L754 eck$LassoCheckResult]: Loop: "[137] L29-->L31: Formula: (= v_x_0_1 v_temp_4_1) InVars {x_0=v_x_0_1} OutVars{temp_4=v_temp_4_1, x_0=v_x_0_1} AuxVars[] AssignedVars[temp_4]" "[138] L31-->L32: Formula: (= (+ v_temp_4_2 1) v_x_0_2) InVars {temp_4=v_temp_4_2} OutVars{temp_4=v_temp_4_2, x_0=v_x_0_2} AuxVars[] AssignedVars[x_0]" "[139] L32-->L33: Formula: v_f1_2_2 InVars {} OutVars{f1_2=v_f1_2_2} AuxVars[] AssignedVars[f1_2]" "[140] L33-->L34: Formula: v_f2_3_3 InVars {f2_3=v_f2_3_3} OutVars{f2_3=v_f2_3_3} AuxVars[] AssignedVars[]" "[141] L34-->L35: Formula: (= v_y_1_1 v_temp_5_1) InVars {y_1=v_y_1_1} OutVars{y_1=v_y_1_1, temp_5=v_temp_5_1} AuxVars[] AssignedVars[temp_5]" "[142] L35-->L36: Formula: (= (+ v_temp_5_2 1) v_y_1_2) InVars {temp_5=v_temp_5_2} OutVars{y_1=v_y_1_2, temp_5=v_temp_5_2} AuxVars[] AssignedVars[y_1]" "[143] L36-->L37: Formula: (not v_f1_2_3) InVars {} OutVars{f1_2=v_f1_2_3} AuxVars[] AssignedVars[f1_2]" "[144] L37-->L29: Formula: (not v_f2_3_2) InVars {f2_3=v_f2_3_2} OutVars{f2_3=v_f2_3_2} AuxVars[] AssignedVars[]" [2025-04-26 18:40:36,932 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash 3996222, now seen corresponding path program 1 times [2025-04-26 18:40:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:36,938 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367801500] [2025-04-26 18:40:36,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:40:36,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:36,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:40:36,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:40:36,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:36,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:36,991 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:40:36,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:40:36,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:40:36,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:36,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:37,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:40:37,016 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1526064251, now seen corresponding path program 1 times [2025-04-26 18:40:37,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:37,016 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361358539] [2025-04-26 18:40:37,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:40:37,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:37,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:40:37,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:40:37,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:37,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:40:37,105 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 18:40:37,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:40:37,108 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361358539] [2025-04-26 18:40:37,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361358539] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:40:37,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:40:37,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 18:40:37,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594320124] [2025-04-26 18:40:37,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:40:37,115 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-04-26 18:40:37,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:40:37,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:40:37,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:40:37,176 INFO L87 Difference]: Start difference. First operand has 6061 states, 6059 states have (on average 2.3215051988777025) internal successors, (in total 14066), 6060 states have internal predecessors, (14066), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:40:37,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:40:37,359 INFO L93 Difference]: Finished difference Result 7253 states and 16596 transitions. [2025-04-26 18:40:37,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7253 states and 16596 transitions. [2025-04-26 18:40:37,420 INFO L131 ngComponentsAnalysis]: Automaton has 36 accepting balls. 5694 [2025-04-26 18:40:37,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7253 states to 7151 states and 16389 transitions. [2025-04-26 18:40:37,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7151 [2025-04-26 18:40:37,511 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7151 [2025-04-26 18:40:37,512 INFO L74 IsDeterministic]: Start isDeterministic. Operand 7151 states and 16389 transitions. [2025-04-26 18:40:37,539 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:40:37,539 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7151 states and 16389 transitions. [2025-04-26 18:40:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states and 16389 transitions. [2025-04-26 18:40:37,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 7151. [2025-04-26 18:40:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7151 states, 7151 states have (on average 2.2918472940847434) internal successors, (in total 16389), 7150 states have internal predecessors, (16389), 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 18:40:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 16389 transitions. [2025-04-26 18:40:37,762 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7151 states and 16389 transitions. [2025-04-26 18:40:37,763 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:40:37,768 INFO L438 stractBuchiCegarLoop]: Abstraction has 7151 states and 16389 transitions. [2025-04-26 18:40:37,768 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:40:37,769 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7151 states and 16389 transitions. [2025-04-26 18:40:37,809 INFO L131 ngComponentsAnalysis]: Automaton has 36 accepting balls. 5694 [2025-04-26 18:40:37,810 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:40:37,810 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:40:37,810 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:40:37,810 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:40:37,811 INFO L752 eck$LassoCheckResult]: Stem: "[97] $Ultimate##0-->L116: Formula: (and (= v_x_0_3 v_x_8_1) (= v_y_9_1 v_y_1_3)) InVars {y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} OutVars{y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} AuxVars[] AssignedVars[]" "[186] L116-->$Ultimate##0: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[130] $Ultimate##0-->L59: Formula: (and (not v_f1_2_6) (not v_f2_3_6)) InVars {} OutVars{f2_3=v_f2_3_6, f1_2=v_f1_2_6} AuxVars[] AssignedVars[f2_3, f1_2]" "[198] L59-->L29: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_4) (= 2 v_thread2Thread1of1ForFork0_thidvar1_4)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[201] L63-->L44: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_4) (= 3 v_thread3Thread1of1ForFork1_thidvar1_4) (= 3 v_thread3Thread1of1ForFork1_thidvar0_4)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" [2025-04-26 18:40:37,811 INFO L754 eck$LassoCheckResult]: Loop: "[146] L44-->L46: Formula: (= v_y_1_5 v_temp_6_1) InVars {y_1=v_y_1_5} OutVars{temp_6=v_temp_6_1, y_1=v_y_1_5} AuxVars[] AssignedVars[temp_6]" "[147] L46-->L47: Formula: (= (+ v_temp_6_2 1) v_y_1_6) InVars {temp_6=v_temp_6_2} OutVars{temp_6=v_temp_6_2, y_1=v_y_1_6} AuxVars[] AssignedVars[y_1]" "[148] L47-->L48: Formula: v_f2_3_4 InVars {} OutVars{f2_3=v_f2_3_4} AuxVars[] AssignedVars[f2_3]" "[149] L48-->L49: Formula: v_f1_2_4 InVars {f1_2=v_f1_2_4} OutVars{f1_2=v_f1_2_4} AuxVars[] AssignedVars[]" "[150] L49-->L50: Formula: (= v_x_0_5 v_temp_7_1) InVars {x_0=v_x_0_5} OutVars{temp_7=v_temp_7_1, x_0=v_x_0_5} AuxVars[] AssignedVars[temp_7]" "[151] L50-->L51: Formula: (= (+ v_temp_7_2 1) v_x_0_6) InVars {temp_7=v_temp_7_2} OutVars{temp_7=v_temp_7_2, x_0=v_x_0_6} AuxVars[] AssignedVars[x_0]" "[152] L51-->L52: Formula: (not v_f2_3_5) InVars {} OutVars{f2_3=v_f2_3_5} AuxVars[] AssignedVars[f2_3]" "[153] L52-->L44: Formula: (not v_f1_2_5) InVars {f1_2=v_f1_2_5} OutVars{f1_2=v_f1_2_5} AuxVars[] AssignedVars[]" [2025-04-26 18:40:37,813 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:37,813 INFO L85 PathProgramCache]: Analyzing trace with hash 123883083, now seen corresponding path program 1 times [2025-04-26 18:40:37,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:37,813 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621505902] [2025-04-26 18:40:37,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:40:37,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:37,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:40:37,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:37,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:37,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:37,824 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:40:37,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:40:37,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:37,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:37,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:37,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:40:37,831 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:37,832 INFO L85 PathProgramCache]: Analyzing trace with hash 938176517, now seen corresponding path program 1 times [2025-04-26 18:40:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:37,832 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718614357] [2025-04-26 18:40:37,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:40:37,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:37,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:40:37,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:40:37,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:37,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:40:37,853 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 18:40:37,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:40:37,854 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718614357] [2025-04-26 18:40:37,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718614357] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:40:37,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:40:37,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 18:40:37,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459636510] [2025-04-26 18:40:37,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:40:37,855 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-04-26 18:40:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:40:37,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:40:37,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:40:37,855 INFO L87 Difference]: Start difference. First operand 7151 states and 16389 transitions. cyclomatic complexity: 9274 Second operand has 3 states, 2 states have (on average 4.0) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:40:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:40:37,962 INFO L93 Difference]: Finished difference Result 6705 states and 14672 transitions. [2025-04-26 18:40:37,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6705 states and 14672 transitions. [2025-04-26 18:40:38,048 INFO L131 ngComponentsAnalysis]: Automaton has 40 accepting balls. 5152 [2025-04-26 18:40:38,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6705 states to 6543 states and 14456 transitions. [2025-04-26 18:40:38,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6543 [2025-04-26 18:40:38,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6543 [2025-04-26 18:40:38,098 INFO L74 IsDeterministic]: Start isDeterministic. Operand 6543 states and 14456 transitions. [2025-04-26 18:40:38,110 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:40:38,110 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6543 states and 14456 transitions. [2025-04-26 18:40:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6543 states and 14456 transitions. [2025-04-26 18:40:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6543 to 6543. [2025-04-26 18:40:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6543 states, 6543 states have (on average 2.2093840745835243) internal successors, (in total 14456), 6542 states have internal predecessors, (14456), 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 18:40:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6543 states to 6543 states and 14456 transitions. [2025-04-26 18:40:38,238 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6543 states and 14456 transitions. [2025-04-26 18:40:38,238 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:40:38,239 INFO L438 stractBuchiCegarLoop]: Abstraction has 6543 states and 14456 transitions. [2025-04-26 18:40:38,239 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:40:38,239 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6543 states and 14456 transitions. [2025-04-26 18:40:38,265 INFO L131 ngComponentsAnalysis]: Automaton has 40 accepting balls. 5152 [2025-04-26 18:40:38,265 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:40:38,266 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:40:38,266 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:40:38,266 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:40:38,266 INFO L752 eck$LassoCheckResult]: Stem: "[97] $Ultimate##0-->L116: Formula: (and (= v_x_0_3 v_x_8_1) (= v_y_9_1 v_y_1_3)) InVars {y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} OutVars{y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} AuxVars[] AssignedVars[]" "[186] L116-->$Ultimate##0: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[130] $Ultimate##0-->L59: Formula: (and (not v_f1_2_6) (not v_f2_3_6)) InVars {} OutVars{f2_3=v_f2_3_6, f1_2=v_f1_2_6} AuxVars[] AssignedVars[f2_3, f1_2]" "[198] L59-->L29: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_4) (= 2 v_thread2Thread1of1ForFork0_thidvar1_4)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[201] L63-->L44: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_4) (= 3 v_thread3Thread1of1ForFork1_thidvar1_4) (= 3 v_thread3Thread1of1ForFork1_thidvar0_4)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" [2025-04-26 18:40:38,267 INFO L754 eck$LassoCheckResult]: Loop: "[146] L44-->L46: Formula: (= v_y_1_5 v_temp_6_1) InVars {y_1=v_y_1_5} OutVars{temp_6=v_temp_6_1, y_1=v_y_1_5} AuxVars[] AssignedVars[temp_6]" "[147] L46-->L47: Formula: (= (+ v_temp_6_2 1) v_y_1_6) InVars {temp_6=v_temp_6_2} OutVars{temp_6=v_temp_6_2, y_1=v_y_1_6} AuxVars[] AssignedVars[y_1]" "[148] L47-->L48: Formula: v_f2_3_4 InVars {} OutVars{f2_3=v_f2_3_4} AuxVars[] AssignedVars[f2_3]" "[149] L48-->L49: Formula: v_f1_2_4 InVars {f1_2=v_f1_2_4} OutVars{f1_2=v_f1_2_4} AuxVars[] AssignedVars[]" "[150] L49-->L50: Formula: (= v_x_0_5 v_temp_7_1) InVars {x_0=v_x_0_5} OutVars{temp_7=v_temp_7_1, x_0=v_x_0_5} AuxVars[] AssignedVars[temp_7]" "[137] L29-->L31: Formula: (= v_x_0_1 v_temp_4_1) InVars {x_0=v_x_0_1} OutVars{temp_4=v_temp_4_1, x_0=v_x_0_1} AuxVars[] AssignedVars[temp_4]" "[138] L31-->L32: Formula: (= (+ v_temp_4_2 1) v_x_0_2) InVars {temp_4=v_temp_4_2} OutVars{temp_4=v_temp_4_2, x_0=v_x_0_2} AuxVars[] AssignedVars[x_0]" "[139] L32-->L33: Formula: v_f1_2_2 InVars {} OutVars{f1_2=v_f1_2_2} AuxVars[] AssignedVars[f1_2]" "[151] L50-->L51: Formula: (= (+ v_temp_7_2 1) v_x_0_6) InVars {temp_7=v_temp_7_2} OutVars{temp_7=v_temp_7_2, x_0=v_x_0_6} AuxVars[] AssignedVars[x_0]" "[140] L33-->L34: Formula: v_f2_3_3 InVars {f2_3=v_f2_3_3} OutVars{f2_3=v_f2_3_3} AuxVars[] AssignedVars[]" "[141] L34-->L35: Formula: (= v_y_1_1 v_temp_5_1) InVars {y_1=v_y_1_1} OutVars{y_1=v_y_1_1, temp_5=v_temp_5_1} AuxVars[] AssignedVars[temp_5]" "[152] L51-->L52: Formula: (not v_f2_3_5) InVars {} OutVars{f2_3=v_f2_3_5} AuxVars[] AssignedVars[f2_3]" "[142] L35-->L36: Formula: (= (+ v_temp_5_2 1) v_y_1_2) InVars {temp_5=v_temp_5_2} OutVars{y_1=v_y_1_2, temp_5=v_temp_5_2} AuxVars[] AssignedVars[y_1]" "[143] L36-->L37: Formula: (not v_f1_2_3) InVars {} OutVars{f1_2=v_f1_2_3} AuxVars[] AssignedVars[f1_2]" "[153] L52-->L44: Formula: (not v_f1_2_5) InVars {f1_2=v_f1_2_5} OutVars{f1_2=v_f1_2_5} AuxVars[] AssignedVars[]" "[144] L37-->L29: Formula: (not v_f2_3_2) InVars {f2_3=v_f2_3_2} OutVars{f2_3=v_f2_3_2} AuxVars[] AssignedVars[]" [2025-04-26 18:40:38,267 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:38,267 INFO L85 PathProgramCache]: Analyzing trace with hash 123883083, now seen corresponding path program 2 times [2025-04-26 18:40:38,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:38,267 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136853708] [2025-04-26 18:40:38,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 18:40:38,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:38,270 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:40:38,272 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:38,272 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 18:40:38,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:38,272 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:40:38,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:40:38,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:38,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:38,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:38,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:40:38,276 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2088538481, now seen corresponding path program 1 times [2025-04-26 18:40:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:38,277 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789878703] [2025-04-26 18:40:38,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:40:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:38,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-26 18:40:38,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-26 18:40:38,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:38,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:38,288 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:40:38,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-26 18:40:38,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-26 18:40:38,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:38,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:38,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:40:38,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:38,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1717311271, now seen corresponding path program 1 times [2025-04-26 18:40:38,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:38,303 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141549518] [2025-04-26 18:40:38,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:40:38,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:38,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-26 18:40:38,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-26 18:40:38,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:38,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:40:38,338 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 18:40:38,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:40:38,338 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141549518] [2025-04-26 18:40:38,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141549518] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:40:38,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:40:38,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 18:40:38,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530629567] [2025-04-26 18:40:38,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:40:38,427 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:40:38,427 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:40:38,427 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:40:38,427 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:40:38,428 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:40:38,428 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:38,428 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:40:38,428 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:40:38,428 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-loop.wvr.bpl_petrified1_Iteration3_Loop [2025-04-26 18:40:38,428 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:40:38,428 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:40:38,439 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:38,451 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:38,458 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:38,463 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:38,530 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:40:38,530 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:40:38,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:38,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:38,545 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 18:40:38,546 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 18:40:38,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:38,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:38,575 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 18:40:38,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:38,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:38,581 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 18:40:38,585 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 18:40:38,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:40:38,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:38,836 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:38,836 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {temp_6=2, y_1=0, temp_5=1} Honda state: {temp_6=2, y_1=0, temp_5=1} Generalized eigenvectors: [{temp_6=-2, y_1=2, temp_5=0}, {temp_6=4, y_1=0, temp_5=2}, {temp_6=-4, y_1=0, temp_5=-2}] Lambdas: [1, 1, 0] Nus: [1, 1] [2025-04-26 18:40:38,846 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 18:40:38,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:38,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:38,849 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 18:40:38,854 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 18:40:38,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:38,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:38,884 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 18:40:38,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:38,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:38,886 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 18:40:38,888 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 18:40:38,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:40:38,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:39,057 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:39,058 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {temp_4=0, temp_7=-1, x_0=1} Honda state: {temp_4=0, temp_7=-1, x_0=1} Generalized eigenvectors: [{temp_4=0, temp_7=1, x_0=0}, {temp_4=0, temp_7=2, x_0=1}, {temp_4=1, temp_7=-1, x_0=0}] Lambdas: [0, 1, 0] Nus: [0, 1] [2025-04-26 18:40:39,064 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 18:40:39,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:39,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:39,066 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 18:40:39,068 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 18:40:39,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:39,069 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:39,087 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 18:40:39,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:39,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:39,089 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 18:40:39,091 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 18:40:39,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:40:39,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:39,115 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:40:39,119 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 18:40:39,120 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:40:39,120 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:40:39,120 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:40:39,120 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:40:39,120 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:40:39,120 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:39,120 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:40:39,120 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:40:39,120 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-loop.wvr.bpl_petrified1_Iteration3_Loop [2025-04-26 18:40:39,120 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:40:39,120 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:40:39,121 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:39,128 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:39,134 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:39,139 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:39,190 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:40:39,193 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:40:39,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:39,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:39,197 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 18:40:39,198 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 18:40:39,200 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 18:40:39,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:40:39,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:40:39,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:40:39,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:40:39,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:40:39,216 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:40:39,217 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:40:39,220 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:40:39,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 18:40:39,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:39,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:39,227 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 18:40:39,229 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 18:40:39,230 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 18:40:39,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:40:39,240 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:40:39,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:40:39,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:40:39,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:40:39,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:40:39,242 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:40:39,244 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:40:39,250 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 18:40:39,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:39,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:39,252 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 18:40:39,293 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 18:40:39,294 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 18:40:39,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:40:39,304 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:40:39,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:40:39,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:40:39,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:40:39,304 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:40:39,304 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:40:39,306 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:40:39,309 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:40:39,309 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:40:39,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:39,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:39,313 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 18:40:39,314 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 18:40:39,315 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:40:39,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 18:40:39,319 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:40:39,319 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:40:39,319 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(ite f1_2 1 0)_2) = 1*v_rep(ite f1_2 1 0)_2 Supporting invariants [] [2025-04-26 18:40:39,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 18:40:39,328 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:40:39,342 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:39,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:40:39,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:39,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:39,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:40:39,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:40:39,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:40:39,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-26 18:40:39,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-26 18:40:39,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:39,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:40:39,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:40:39,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:40:39,471 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 18:40:39,475 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 18:40:39,477 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6543 states and 14456 transitions. cyclomatic complexity: 7953 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (in total 21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:40:39,718 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6543 states and 14456 transitions. cyclomatic complexity: 7953. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (in total 21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 19932 states and 45428 transitions. Complement of second has 7 states. [2025-04-26 18:40:39,723 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 18:40:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.2) internal successors, (in total 21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:40:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2025-04-26 18:40:39,726 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 164 transitions. Stem has 5 letters. Loop has 16 letters. [2025-04-26 18:40:39,726 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:40:39,726 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 164 transitions. Stem has 21 letters. Loop has 16 letters. [2025-04-26 18:40:39,726 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:40:39,728 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 164 transitions. Stem has 5 letters. Loop has 32 letters. [2025-04-26 18:40:39,730 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:40:39,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19932 states and 45428 transitions. [2025-04-26 18:40:39,953 INFO L131 ngComponentsAnalysis]: Automaton has 188 accepting balls. 8408 [2025-04-26 18:40:40,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19932 states to 18501 states and 42396 transitions. [2025-04-26 18:40:40,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12536 [2025-04-26 18:40:40,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13473 [2025-04-26 18:40:40,110 INFO L74 IsDeterministic]: Start isDeterministic. Operand 18501 states and 42396 transitions. [2025-04-26 18:40:40,110 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:40:40,110 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18501 states and 42396 transitions. [2025-04-26 18:40:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18501 states and 42396 transitions. [2025-04-26 18:40:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18501 to 16335. [2025-04-26 18:40:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16335 states, 16335 states have (on average 2.315824915824916) internal successors, (in total 37829), 16334 states have internal predecessors, (37829), 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 18:40:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16335 states to 16335 states and 37829 transitions. [2025-04-26 18:40:40,628 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16335 states and 37829 transitions. [2025-04-26 18:40:40,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:40:40,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:40:40,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:40:40,629 INFO L87 Difference]: Start difference. First operand 16335 states and 37829 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (in total 21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:40:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:40:40,735 INFO L93 Difference]: Finished difference Result 13024 states and 30089 transitions. [2025-04-26 18:40:40,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13024 states and 30089 transitions. [2025-04-26 18:40:40,831 INFO L131 ngComponentsAnalysis]: Automaton has 134 accepting balls. 5966 [2025-04-26 18:40:40,891 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13024 states to 11156 states and 25551 transitions. [2025-04-26 18:40:40,892 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8740 [2025-04-26 18:40:40,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9096 [2025-04-26 18:40:40,905 INFO L74 IsDeterministic]: Start isDeterministic. Operand 11156 states and 25551 transitions. [2025-04-26 18:40:40,905 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:40:40,905 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11156 states and 25551 transitions. [2025-04-26 18:40:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states and 25551 transitions. [2025-04-26 18:40:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 9185. [2025-04-26 18:40:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9185 states, 9185 states have (on average 2.299292324442025) internal successors, (in total 21119), 9184 states have internal predecessors, (21119), 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 18:40:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9185 states to 9185 states and 21119 transitions. [2025-04-26 18:40:41,197 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9185 states and 21119 transitions. [2025-04-26 18:40:41,197 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:40:41,199 INFO L438 stractBuchiCegarLoop]: Abstraction has 9185 states and 21119 transitions. [2025-04-26 18:40:41,200 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 18:40:41,200 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9185 states and 21119 transitions. [2025-04-26 18:40:41,240 INFO L131 ngComponentsAnalysis]: Automaton has 94 accepting balls. 5086 [2025-04-26 18:40:41,240 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:40:41,240 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:40:41,241 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:40:41,241 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:40:41,242 INFO L752 eck$LassoCheckResult]: Stem: "[97] $Ultimate##0-->L116: Formula: (and (= v_x_0_3 v_x_8_1) (= v_y_9_1 v_y_1_3)) InVars {y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} OutVars{y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} AuxVars[] AssignedVars[]" "[186] L116-->$Ultimate##0: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[130] $Ultimate##0-->L59: Formula: (and (not v_f1_2_6) (not v_f2_3_6)) InVars {} OutVars{f2_3=v_f2_3_6, f1_2=v_f1_2_6} AuxVars[] AssignedVars[f2_3, f1_2]" "[198] L59-->L29: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_4) (= 2 v_thread2Thread1of1ForFork0_thidvar1_4)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[201] L63-->L44: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_4) (= 3 v_thread3Thread1of1ForFork1_thidvar1_4) (= 3 v_thread3Thread1of1ForFork1_thidvar0_4)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" [2025-04-26 18:40:41,242 INFO L754 eck$LassoCheckResult]: Loop: "[137] L29-->L31: Formula: (= v_x_0_1 v_temp_4_1) InVars {x_0=v_x_0_1} OutVars{temp_4=v_temp_4_1, x_0=v_x_0_1} AuxVars[] AssignedVars[temp_4]" "[146] L44-->L46: Formula: (= v_y_1_5 v_temp_6_1) InVars {y_1=v_y_1_5} OutVars{temp_6=v_temp_6_1, y_1=v_y_1_5} AuxVars[] AssignedVars[temp_6]" "[138] L31-->L32: Formula: (= (+ v_temp_4_2 1) v_x_0_2) InVars {temp_4=v_temp_4_2} OutVars{temp_4=v_temp_4_2, x_0=v_x_0_2} AuxVars[] AssignedVars[x_0]" "[147] L46-->L47: Formula: (= (+ v_temp_6_2 1) v_y_1_6) InVars {temp_6=v_temp_6_2} OutVars{temp_6=v_temp_6_2, y_1=v_y_1_6} AuxVars[] AssignedVars[y_1]" "[139] L32-->L33: Formula: v_f1_2_2 InVars {} OutVars{f1_2=v_f1_2_2} AuxVars[] AssignedVars[f1_2]" "[140] L33-->L34: Formula: v_f2_3_3 InVars {f2_3=v_f2_3_3} OutVars{f2_3=v_f2_3_3} AuxVars[] AssignedVars[]" "[141] L34-->L35: Formula: (= v_y_1_1 v_temp_5_1) InVars {y_1=v_y_1_1} OutVars{y_1=v_y_1_1, temp_5=v_temp_5_1} AuxVars[] AssignedVars[temp_5]" "[142] L35-->L36: Formula: (= (+ v_temp_5_2 1) v_y_1_2) InVars {temp_5=v_temp_5_2} OutVars{y_1=v_y_1_2, temp_5=v_temp_5_2} AuxVars[] AssignedVars[y_1]" "[148] L47-->L48: Formula: v_f2_3_4 InVars {} OutVars{f2_3=v_f2_3_4} AuxVars[] AssignedVars[f2_3]" "[149] L48-->L49: Formula: v_f1_2_4 InVars {f1_2=v_f1_2_4} OutVars{f1_2=v_f1_2_4} AuxVars[] AssignedVars[]" "[150] L49-->L50: Formula: (= v_x_0_5 v_temp_7_1) InVars {x_0=v_x_0_5} OutVars{temp_7=v_temp_7_1, x_0=v_x_0_5} AuxVars[] AssignedVars[temp_7]" "[151] L50-->L51: Formula: (= (+ v_temp_7_2 1) v_x_0_6) InVars {temp_7=v_temp_7_2} OutVars{temp_7=v_temp_7_2, x_0=v_x_0_6} AuxVars[] AssignedVars[x_0]" "[152] L51-->L52: Formula: (not v_f2_3_5) InVars {} OutVars{f2_3=v_f2_3_5} AuxVars[] AssignedVars[f2_3]" "[143] L36-->L37: Formula: (not v_f1_2_3) InVars {} OutVars{f1_2=v_f1_2_3} AuxVars[] AssignedVars[f1_2]" "[153] L52-->L44: Formula: (not v_f1_2_5) InVars {f1_2=v_f1_2_5} OutVars{f1_2=v_f1_2_5} AuxVars[] AssignedVars[]" "[144] L37-->L29: Formula: (not v_f2_3_2) InVars {f2_3=v_f2_3_2} OutVars{f2_3=v_f2_3_2} AuxVars[] AssignedVars[]" [2025-04-26 18:40:41,243 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash 123883083, now seen corresponding path program 3 times [2025-04-26 18:40:41,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:41,243 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843929012] [2025-04-26 18:40:41,243 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-26 18:40:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:41,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:40:41,251 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:41,251 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-26 18:40:41,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:41,251 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:40:41,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:40:41,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:41,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:41,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:41,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:40:41,254 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1129547845, now seen corresponding path program 2 times [2025-04-26 18:40:41,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:41,254 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755350580] [2025-04-26 18:40:41,254 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 18:40:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:41,256 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-04-26 18:40:41,258 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-26 18:40:41,259 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 18:40:41,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:41,259 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:40:41,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-26 18:40:41,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-26 18:40:41,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:41,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:41,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:40:41,265 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:41,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1500775055, now seen corresponding path program 2 times [2025-04-26 18:40:41,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:41,265 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579960571] [2025-04-26 18:40:41,265 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 18:40:41,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:41,267 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-04-26 18:40:41,269 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-26 18:40:41,269 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 18:40:41,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:40:41,288 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 18:40:41,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:40:41,288 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579960571] [2025-04-26 18:40:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579960571] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:40:41,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:40:41,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 18:40:41,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615202123] [2025-04-26 18:40:41,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:40:41,350 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:40:41,350 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:40:41,350 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:40:41,350 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:40:41,350 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:40:41,350 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:41,350 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:40:41,350 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:40:41,350 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-loop.wvr.bpl_petrified1_Iteration4_Loop [2025-04-26 18:40:41,350 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:40:41,350 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:40:41,351 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:41,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:41,361 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:41,368 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:41,426 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:40:41,427 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:40:41,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:41,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:41,429 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 18:40:41,431 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 18:40:41,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:41,432 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:41,451 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:41,451 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep(ite f1_2 1 0)_3=0} Honda state: {v_rep(ite f1_2 1 0)_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:41,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 18:40:41,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:41,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:41,466 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 18:40:41,474 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 18:40:41,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:41,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:41,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 18:40:41,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:41,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:41,493 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 18:40:41,494 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 18:40:41,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:40:41,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:41,528 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:40:41,532 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 18:40:41,534 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:40:41,535 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:40:41,535 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:40:41,535 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:40:41,535 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:40:41,535 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:41,535 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:40:41,535 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:40:41,535 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-loop.wvr.bpl_petrified1_Iteration4_Loop [2025-04-26 18:40:41,535 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:40:41,535 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:40:41,536 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:41,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:41,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:41,555 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:41,608 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:40:41,608 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:40:41,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:41,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:41,611 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 18:40:41,612 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 18:40:41,614 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 18:40:41,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:40:41,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:40:41,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:40:41,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:40:41,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:40:41,625 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:40:41,625 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:40:41,627 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:40:41,633 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 18:40:41,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:41,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:41,636 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 18:40:41,639 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 18:40:41,641 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 18:40:41,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:40:41,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:40:41,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:40:41,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:40:41,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:40:41,652 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:40:41,652 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:40:41,656 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 18:40:41,662 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 18:40:41,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:41,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:41,664 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 18:40:41,666 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 18:40:41,667 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 18:40:41,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:40:41,677 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:40:41,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:40:41,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:40:41,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:40:41,679 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:40:41,679 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:40:41,683 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:40:41,686 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:40:41,686 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:40:41,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:41,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:41,689 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 18:40:41,690 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 18:40:41,690 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:40:41,693 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:40:41,694 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 18:40:41,694 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:40:41,695 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:40:41,695 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(ite f2_3 1 0)_4) = 1*v_rep(ite f2_3 1 0)_4 Supporting invariants [] [2025-04-26 18:40:41,700 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 18:40:41,701 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:40:41,717 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:41,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:40:41,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:41,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:41,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:40:41,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:40:41,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:40:41,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-26 18:40:41,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-26 18:40:41,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:41,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:40:41,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:40:41,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:40:41,842 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 18:40:41,843 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 18:40:41,843 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9185 states and 21119 transitions. cyclomatic complexity: 12088 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (in total 21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:40:42,136 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9185 states and 21119 transitions. cyclomatic complexity: 12088. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (in total 21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 27356 states and 63946 transitions. Complement of second has 7 states. [2025-04-26 18:40:42,136 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 18:40:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.2) internal successors, (in total 21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:40:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2025-04-26 18:40:42,137 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 157 transitions. Stem has 5 letters. Loop has 16 letters. [2025-04-26 18:40:42,137 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:40:42,137 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 157 transitions. Stem has 21 letters. Loop has 16 letters. [2025-04-26 18:40:42,137 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:40:42,137 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 157 transitions. Stem has 5 letters. Loop has 32 letters. [2025-04-26 18:40:42,138 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:40:42,138 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27356 states and 63946 transitions. [2025-04-26 18:40:42,271 INFO L131 ngComponentsAnalysis]: Automaton has 258 accepting balls. 8694 [2025-04-26 18:40:42,555 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27356 states to 23952 states and 55664 transitions. [2025-04-26 18:40:42,560 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13049 [2025-04-26 18:40:42,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14126 [2025-04-26 18:40:42,600 INFO L74 IsDeterministic]: Start isDeterministic. Operand 23952 states and 55664 transitions. [2025-04-26 18:40:42,601 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:40:42,601 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23952 states and 55664 transitions. [2025-04-26 18:40:42,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23952 states and 55664 transitions. [2025-04-26 18:40:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23952 to 20109. [2025-04-26 18:40:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20109 states, 20109 states have (on average 2.3705306081853896) internal successors, (in total 47669), 20108 states have internal predecessors, (47669), 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 18:40:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20109 states to 20109 states and 47669 transitions. [2025-04-26 18:40:42,996 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20109 states and 47669 transitions. [2025-04-26 18:40:42,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:40:42,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 18:40:42,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 18:40:42,997 INFO L87 Difference]: Start difference. First operand 20109 states and 47669 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (in total 21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:40:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:40:43,056 INFO L93 Difference]: Finished difference Result 8267 states and 18530 transitions. [2025-04-26 18:40:43,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8267 states and 18530 transitions. [2025-04-26 18:40:43,189 INFO L131 ngComponentsAnalysis]: Automaton has 82 accepting balls. 4228 [2025-04-26 18:40:43,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8267 states to 7018 states and 15635 transitions. [2025-04-26 18:40:43,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5768 [2025-04-26 18:40:43,223 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5768 [2025-04-26 18:40:43,223 INFO L74 IsDeterministic]: Start isDeterministic. Operand 7018 states and 15635 transitions. [2025-04-26 18:40:43,223 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:40:43,223 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7018 states and 15635 transitions. [2025-04-26 18:40:43,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7018 states and 15635 transitions. [2025-04-26 18:40:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7018 to 6140. [2025-04-26 18:40:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6140 states, 6140 states have (on average 2.1879478827361565) internal successors, (in total 13434), 6139 states have internal predecessors, (13434), 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 18:40:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 13434 transitions. [2025-04-26 18:40:43,300 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6140 states and 13434 transitions. [2025-04-26 18:40:43,301 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-26 18:40:43,301 INFO L438 stractBuchiCegarLoop]: Abstraction has 6140 states and 13434 transitions. [2025-04-26 18:40:43,301 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 18:40:43,301 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6140 states and 13434 transitions. [2025-04-26 18:40:43,318 INFO L131 ngComponentsAnalysis]: Automaton has 58 accepting balls. 3700 [2025-04-26 18:40:43,318 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:40:43,318 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:40:43,319 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:40:43,319 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 18:40:43,319 INFO L752 eck$LassoCheckResult]: Stem: "[97] $Ultimate##0-->L116: Formula: (and (= v_x_0_3 v_x_8_1) (= v_y_9_1 v_y_1_3)) InVars {y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} OutVars{y_9=v_y_9_1, y_1=v_y_1_3, x_8=v_x_8_1, x_0=v_x_0_3} AuxVars[] AssignedVars[]" "[186] L116-->$Ultimate##0: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0]" "[130] $Ultimate##0-->L59: Formula: (and (not v_f1_2_6) (not v_f2_3_6)) InVars {} OutVars{f2_3=v_f2_3_6, f1_2=v_f1_2_6} AuxVars[] AssignedVars[f2_3, f1_2]" "[198] L59-->L29: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_4) (= 2 v_thread2Thread1of1ForFork0_thidvar1_4)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[201] L63-->L44: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_4) (= 3 v_thread3Thread1of1ForFork1_thidvar1_4) (= 3 v_thread3Thread1of1ForFork1_thidvar0_4)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" [2025-04-26 18:40:43,319 INFO L754 eck$LassoCheckResult]: Loop: "[146] L44-->L46: Formula: (= v_y_1_5 v_temp_6_1) InVars {y_1=v_y_1_5} OutVars{temp_6=v_temp_6_1, y_1=v_y_1_5} AuxVars[] AssignedVars[temp_6]" "[137] L29-->L31: Formula: (= v_x_0_1 v_temp_4_1) InVars {x_0=v_x_0_1} OutVars{temp_4=v_temp_4_1, x_0=v_x_0_1} AuxVars[] AssignedVars[temp_4]" "[138] L31-->L32: Formula: (= (+ v_temp_4_2 1) v_x_0_2) InVars {temp_4=v_temp_4_2} OutVars{temp_4=v_temp_4_2, x_0=v_x_0_2} AuxVars[] AssignedVars[x_0]" "[147] L46-->L47: Formula: (= (+ v_temp_6_2 1) v_y_1_6) InVars {temp_6=v_temp_6_2} OutVars{temp_6=v_temp_6_2, y_1=v_y_1_6} AuxVars[] AssignedVars[y_1]" "[139] L32-->L33: Formula: v_f1_2_2 InVars {} OutVars{f1_2=v_f1_2_2} AuxVars[] AssignedVars[f1_2]" "[148] L47-->L48: Formula: v_f2_3_4 InVars {} OutVars{f2_3=v_f2_3_4} AuxVars[] AssignedVars[f2_3]" "[140] L33-->L34: Formula: v_f2_3_3 InVars {f2_3=v_f2_3_3} OutVars{f2_3=v_f2_3_3} AuxVars[] AssignedVars[]" "[149] L48-->L49: Formula: v_f1_2_4 InVars {f1_2=v_f1_2_4} OutVars{f1_2=v_f1_2_4} AuxVars[] AssignedVars[]" "[150] L49-->L50: Formula: (= v_x_0_5 v_temp_7_1) InVars {x_0=v_x_0_5} OutVars{temp_7=v_temp_7_1, x_0=v_x_0_5} AuxVars[] AssignedVars[temp_7]" "[151] L50-->L51: Formula: (= (+ v_temp_7_2 1) v_x_0_6) InVars {temp_7=v_temp_7_2} OutVars{temp_7=v_temp_7_2, x_0=v_x_0_6} AuxVars[] AssignedVars[x_0]" "[141] L34-->L35: Formula: (= v_y_1_1 v_temp_5_1) InVars {y_1=v_y_1_1} OutVars{y_1=v_y_1_1, temp_5=v_temp_5_1} AuxVars[] AssignedVars[temp_5]" "[142] L35-->L36: Formula: (= (+ v_temp_5_2 1) v_y_1_2) InVars {temp_5=v_temp_5_2} OutVars{y_1=v_y_1_2, temp_5=v_temp_5_2} AuxVars[] AssignedVars[y_1]" "[152] L51-->L52: Formula: (not v_f2_3_5) InVars {} OutVars{f2_3=v_f2_3_5} AuxVars[] AssignedVars[f2_3]" "[143] L36-->L37: Formula: (not v_f1_2_3) InVars {} OutVars{f1_2=v_f1_2_3} AuxVars[] AssignedVars[f1_2]" "[153] L52-->L44: Formula: (not v_f1_2_5) InVars {f1_2=v_f1_2_5} OutVars{f1_2=v_f1_2_5} AuxVars[] AssignedVars[]" "[144] L37-->L29: Formula: (not v_f2_3_2) InVars {f2_3=v_f2_3_2} OutVars{f2_3=v_f2_3_2} AuxVars[] AssignedVars[]" [2025-04-26 18:40:43,320 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash 123883083, now seen corresponding path program 4 times [2025-04-26 18:40:43,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:43,320 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607148000] [2025-04-26 18:40:43,320 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-26 18:40:43,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:43,324 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 5 statements into 2 equivalence classes. [2025-04-26 18:40:43,325 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:43,325 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-26 18:40:43,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:43,326 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:40:43,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:40:43,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:40:43,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:43,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:43,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:40:43,333 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:43,333 INFO L85 PathProgramCache]: Analyzing trace with hash -215144989, now seen corresponding path program 3 times [2025-04-26 18:40:43,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:43,334 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63421472] [2025-04-26 18:40:43,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-26 18:40:43,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:43,338 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-04-26 18:40:43,340 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-26 18:40:43,340 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-26 18:40:43,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:43,340 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:40:43,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-26 18:40:43,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-26 18:40:43,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:43,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:43,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:40:43,353 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:40:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 156082221, now seen corresponding path program 3 times [2025-04-26 18:40:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:40:43,353 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794751863] [2025-04-26 18:40:43,353 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-26 18:40:43,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:40:43,360 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 1 equivalence classes. [2025-04-26 18:40:43,362 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-26 18:40:43,362 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-26 18:40:43,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:43,362 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:40:43,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-26 18:40:43,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-26 18:40:43,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:40:43,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:40:43,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:40:43,431 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:40:43,431 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:40:43,431 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:40:43,431 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:40:43,431 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:40:43,431 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:43,431 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:40:43,431 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:40:43,431 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-loop.wvr.bpl_petrified1_Iteration5_Loop [2025-04-26 18:40:43,431 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:40:43,431 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:40:43,432 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:43,434 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:43,439 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:43,441 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:43,485 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:40:43,485 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:40:43,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:43,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:43,487 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 18:40:43,489 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 18:40:43,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:43,490 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:43,508 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:43,508 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep(ite f2_3 1 0)_5=0} Honda state: {v_rep(ite f2_3 1 0)_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:43,514 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 18:40:43,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:43,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:43,516 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 18:40:43,518 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 18:40:43,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:43,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:43,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-04-26 18:40:43,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:43,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:43,547 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 18:40:43,548 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 18:40:43,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:40:43,550 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:43,864 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:43,864 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {temp_4=-26, temp_7=0, x_0=-22} Honda state: {temp_4=-26, temp_7=0, x_0=-22} Generalized eigenvectors: [{temp_4=0, temp_7=-25, x_0=-2}, {temp_4=-2, temp_7=73, x_0=4}, {temp_4=6, temp_7=-69, x_0=0}] Lambdas: [3, 1, 0] Nus: [1, 1] [2025-04-26 18:40:43,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-04-26 18:40:43,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:43,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:43,875 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 18:40:43,875 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 18:40:43,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:43,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:43,893 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:43,893 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep(ite f1_2 1 0)_5=0} Honda state: {v_rep(ite f1_2 1 0)_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:43,899 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 18:40:43,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:43,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:43,901 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:40:43,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 18:40:43,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:43,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:43,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-04-26 18:40:43,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:43,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:43,931 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:40:43,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 18:40:43,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:40:43,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,176 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,176 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {temp_6=2, y_1=0, temp_5=1} Honda state: {temp_6=2, y_1=0, temp_5=1} Generalized eigenvectors: [{temp_6=-2, y_1=2, temp_5=0}, {temp_6=4, y_1=0, temp_5=2}, {temp_6=-4, y_1=0, temp_5=-2}] Lambdas: [1, 1, 0] Nus: [1, 1] [2025-04-26 18:40:44,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 18:40:44,230 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:40:44,231 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:40:44,231 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:40:44,231 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:40:44,231 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:40:44,231 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,231 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:40:44,231 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:40:44,231 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-loop.wvr.bpl_petrified1_Iteration5_Lasso [2025-04-26 18:40:44,231 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:40:44,231 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:40:44,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,237 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,239 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,241 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,245 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,251 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,254 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,259 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:40:44,355 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:40:44,355 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:40:44,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,386 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:40:44,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 18:40:44,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,402 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,403 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread1Thread1of1ForFork2_thidvar0=0} Honda state: {thread1Thread1of1ForFork2_thidvar0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:44,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-04-26 18:40:44,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,410 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:40:44,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-04-26 18:40:44,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,422 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,422 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread3Thread1of1ForFork1_thidvar0=0} Honda state: {thread3Thread1of1ForFork1_thidvar0=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:44,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-04-26 18:40:44,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,429 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:40:44,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-04-26 18:40:44,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,442 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,442 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread3Thread1of1ForFork1_thidvar1=0} Honda state: {thread3Thread1of1ForFork1_thidvar1=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:44,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-04-26 18:40:44,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,449 INFO L229 MonitoredProcess]: Starting monitored process 29 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 18:40:44,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-04-26 18:40:44,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,509 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,510 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork0_thidvar0=0} Honda state: {thread2Thread1of1ForFork0_thidvar0=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:44,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2025-04-26 18:40:44,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,518 INFO L229 MonitoredProcess]: Starting monitored process 30 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 18:40:44,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-04-26 18:40:44,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,530 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,530 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread2Thread1of1ForFork0_thidvar1=0} Honda state: {thread2Thread1of1ForFork0_thidvar1=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:44,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-04-26 18:40:44,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,538 INFO L229 MonitoredProcess]: Starting monitored process 31 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 18:40:44,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-04-26 18:40:44,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,557 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,557 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep(ite f1_2 1 0)_6=0} Honda state: {v_rep(ite f1_2 1 0)_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:44,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2025-04-26 18:40:44,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,565 INFO L229 MonitoredProcess]: Starting monitored process 32 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 18:40:44,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2025-04-26 18:40:44,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2025-04-26 18:40:44,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,594 INFO L229 MonitoredProcess]: Starting monitored process 33 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 18:40:44,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2025-04-26 18:40:44,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:40:44,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,836 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,837 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {temp_4=-1, temp_7=-2, x_0=0, x_8=0} Honda state: {temp_4=-1, temp_7=-2, x_0=0, x_8=0} Generalized eigenvectors: [{temp_4=0, temp_7=2, x_0=1, x_8=-1}, {temp_4=1, temp_7=1, x_0=1, x_8=-1}, {temp_4=0, temp_7=0, x_0=0, x_8=2}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 18:40:44,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2025-04-26 18:40:44,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,847 INFO L229 MonitoredProcess]: Starting monitored process 34 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 18:40:44,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2025-04-26 18:40:44,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,860 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,860 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {thread3Thread1of1ForFork1_thidvar2=0} Honda state: {thread3Thread1of1ForFork1_thidvar2=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:44,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2025-04-26 18:40:44,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,867 INFO L229 MonitoredProcess]: Starting monitored process 35 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 18:40:44,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2025-04-26 18:40:44,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,885 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:44,885 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep(ite f2_3 1 0)_6=0} Honda state: {v_rep(ite f2_3 1 0)_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 18:40:44,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2025-04-26 18:40:44,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,893 INFO L229 MonitoredProcess]: Starting monitored process 36 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 18:40:44,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2025-04-26 18:40:44,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:40:44,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:44,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2025-04-26 18:40:44,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:40:44,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:40:44,922 INFO L229 MonitoredProcess]: Starting monitored process 37 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 18:40:44,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2025-04-26 18:40:44,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:40:44,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:40:45,162 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 18:40:45,162 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {y_1=0, y_9=0, temp_6=-2, temp_5=-9} Honda state: {y_1=0, y_9=0, temp_6=-2, temp_5=-9} Generalized eigenvectors: [{y_1=2, y_9=0, temp_6=2, temp_5=3}, {y_1=0, y_9=0, temp_6=0, temp_5=-1}, {y_1=0, y_9=0, temp_6=0, temp_5=8}] Lambdas: [1, 8, 0] Nus: [1, 1] [2025-04-26 18:40:45,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2025-04-26 18:40:45,181 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 18:40:45,195 INFO L201 PluginConnector]: Adding new model barrier-loop.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:40:45 BoogieIcfgContainer [2025-04-26 18:40:45,195 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:40:45,195 INFO L158 Benchmark]: Toolchain (without parser) took 10527.01ms. Allocated memory was 159.4MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 86.5MB in the beginning and 1.1GB in the end (delta: -995.6MB). Peak memory consumption was 300.6MB. Max. memory is 8.0GB. [2025-04-26 18:40:45,196 INFO L158 Benchmark]: Boogie PL CUP Parser took 1.68ms. Allocated memory is still 159.4MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:40:45,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.04ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 84.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:40:45,196 INFO L158 Benchmark]: Boogie Preprocessor took 24.65ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:40:45,196 INFO L158 Benchmark]: RCFGBuilder took 208.23ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 73.0MB in the end (delta: 10.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 18:40:45,196 INFO L158 Benchmark]: BuchiAutomizer took 10260.89ms. Allocated memory was 159.4MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 72.9MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 288.0MB. Max. memory is 8.0GB. [2025-04-26 18:40:45,198 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 1.68ms. Allocated memory is still 159.4MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.04ms. Allocated memory is still 159.4MB. Free memory was 86.5MB in the beginning and 84.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 24.65ms. Allocated memory is still 159.4MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 208.23ms. Allocated memory is still 159.4MB. Free memory was 83.5MB in the beginning and 73.0MB in the end (delta: 10.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 10260.89ms. Allocated memory was 159.4MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 72.9MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 288.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.1s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 3.6s. Construction of modules took 0.2s. Büchi inclusion checks took 2.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 1.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 8858 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 1.3s Buchi closure took 0.1s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 415 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 413 mSDsluCounter, 708 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 310 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 312 IncrementalHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 398 mSDtfsCounter, 312 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital36 mio100 ax100 hnf100 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq208 hnf90 smp100 dnf100 smp100 tf105 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 6 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.0s InitialAbstractionConstructionTime: 1.6s InitialAbstraction: Time to compute Ample Reduction [ms]: 1650, Number of transitions in reduction automaton: 14066, Number of states in reduction automaton: 6061, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (4 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function (if f1_2 then 1 else 0) and consists of 4 locations. One deterministic module has affine ranking function (if f2_3 then 1 else 0) and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 6140 locations. - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 44]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {y_1=0, x_0=0, freshIdentifier37=0, temp_5=-9, freshIdentifier38=0, temp_6=-2, freshIdentifier39=0, temp_4=-1, (if f2_3 then 1 else 0)=0, (if f1_2 then 1 else 0)=0, freshIdentifier40=0, temp_7=-2, freshIdentifier41=0, freshIdentifier42=0, y_9=0, x_8=0} State at position 1 is {y_1=0, x_0=0, freshIdentifier43=3, temp_5=-9, freshIdentifier44=3, temp_6=-2, freshIdentifier45=3, temp_4=-1, (if f2_3 then 1 else 0)=0, (if f1_2 then 1 else 0)=0, freshIdentifier46=2, temp_7=-2, freshIdentifier47=1, freshIdentifier48=2, y_9=0, x_8=0} For i>1, the state at position i is {y_1=0 + sum_{k=0}^i 2, x_0=0 + sum_{k=0}^i 1*0^k + 1 + 1*k*0^(k-1), freshIdentifier49=3 + sum_{k=0}^i 0, temp_5=-9 + sum_{k=0}^i 3 + -1*8^k + -1*k + 8*0^k + 8*k*8^(k-1) + 8*binomial(k, 2), freshIdentifier50=3 + sum_{k=0}^i 0, temp_6=-2 + sum_{k=0}^i 2, freshIdentifier51=3 + sum_{k=0}^i 0, temp_4=-1 + sum_{k=0}^i 1 + 1*k*0^(k-1), (if f2_3 then 1 else 0)=0 + sum_{k=0}^i 0, (if f1_2 then 1 else 0)=0 + sum_{k=0}^i 0, freshIdentifier52=2 + sum_{k=0}^i 0, temp_7=-2 + sum_{k=0}^i 2*0^k + 1 + 1*k*0^(k-1), freshIdentifier53=1 + sum_{k=0}^i 0, freshIdentifier54=2 + sum_{k=0}^i 0, y_9=0 + sum_{k=0}^i 0, x_8=0 + sum_{k=0}^i -1*0^k + -1 + -1*k*0^(k-1) + 2} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 6GEVs Lambdas: [0, 1, 1, 1, 8, 0] Mus: [1, 0, 0, 1, 1] - NonterminatingLassoResult [Line: 44]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L115] 0 assume x_0 == x_8 && y_1 == y_9; [L116] FORK 0 fork 1 thread1(); [L60] 1 f1_2 := false; [L61] 1 f2_3 := false; [L63] FORK 1 fork 2, 2 thread2(); [L64] FORK 1 fork 3, 3, 3 thread3(); Loop: [L45] temp_6 := y_1; [L30] temp_4 := x_0; [L31] x_0 := temp_4 + 1; [L46] y_1 := temp_6 + 1; [L32] f1_2 := true; [L47] f2_3 := true; [L33] assume f2_3; [L48] assume f1_2; [L49] temp_7 := x_0; [L50] x_0 := temp_7 + 1; [L34] temp_5 := y_1; [L35] y_1 := temp_5 + 1; [L51] f2_3 := false; [L36] f1_2 := false; [L52] assume !f1_2; [L37] assume !f2_3; End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-04-26 18:40:45,215 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...