/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/barrier-6t.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:39,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:39,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:39,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:39,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:39,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:39,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:39,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:39,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:39,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:39,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:39,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:39,870 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:39,870 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:39,870 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:39,870 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:39,870 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:39,870 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:39,870 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:39,870 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:39,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:39,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:39,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:39,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:39,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:39,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:39,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:39,872 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:39,872 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:39,872 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:40,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:40,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:40,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:40,127 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:40,127 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:40,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/barrier-6t.c.bpl [2025-04-26 18:42:40,128 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/barrier-6t.c.bpl' [2025-04-26 18:42:40,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:40,149 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:40,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:40,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:40,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:40,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,185 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:40,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:40,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:40,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:40,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:40,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,196 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:40,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:40,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:40,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:40,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/1) ... [2025-04-26 18:42:40,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:40,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:40,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:40,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 18:42:40,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:40,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:40,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:40,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:40,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:42:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:42:40,263 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:42:40,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:40,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:40,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:40,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 18:42:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 18:42:40,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 18:42:40,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 18:42:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 18:42:40,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 18:42:40,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 18:42:40,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 18:42:40,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 18:42:40,266 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 18:42:40,302 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:40,304 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:40,442 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:40,442 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:40,453 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:40,453 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:40,453 INFO L201 PluginConnector]: Adding new model barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:40 BoogieIcfgContainer [2025-04-26 18:42:40,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:40,456 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:40,456 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:40,460 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:40,461 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:40,461 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:40" (1/2) ... [2025-04-26 18:42:40,462 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@70f7b507 and model type barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:40, skipping insertion in model container [2025-04-26 18:42:40,462 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:40,462 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-6t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:40" (2/2) ... [2025-04-26 18:42:40,463 INFO L376 chiAutomizerObserver]: Analyzing ICFG barrier-6t.c.bpl [2025-04-26 18:42:40,519 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-26 18:42:40,545 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:40,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:40,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:40,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 18:42:40,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 18:42:40,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 202 flow [2025-04-26 18:42:40,622 INFO L116 PetriNetUnfolderBase]: 12/68 cut-off events. [2025-04-26 18:42:40,623 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-26 18:42:40,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 68 events. 12/68 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 204 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2025-04-26 18:42:40,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 80 transitions, 202 flow [2025-04-26 18:42:40,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 68 transitions, 172 flow [2025-04-26 18:42:40,635 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 75 places, 68 transitions, 172 flow [2025-04-26 18:42:40,636 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 68 transitions, 172 flow [2025-04-26 18:42:51,651 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 337044 states, 337043 states have (on average 6.686499942143881) internal successors, (in total 2253638), 337043 states have internal predecessors, (2253638), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:52,325 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 337044 states, 337043 states have (on average 6.686499942143881) internal successors, (in total 2253638), 337043 states have internal predecessors, (2253638), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:52,328 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:43:06,245 WARN L140 AmpleReduction]: Number of pruned transitions: 993502 [2025-04-26 18:43:06,246 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:43:06,246 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 109357 [2025-04-26 18:43:06,246 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:2055 [2025-04-26 18:43:06,246 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:188690 [2025-04-26 18:43:06,246 WARN L145 AmpleReduction]: Times succ was already a loop node:356398 [2025-04-26 18:43:06,246 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:51216 [2025-04-26 18:43:06,246 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:43:07,301 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 300103 states, 300102 states have (on average 3.3568320104497804) internal successors, (in total 1007392), 300102 states have internal predecessors, (1007392), 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 18:43:07,309 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:43:07,310 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:43:07,310 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:43:07,310 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:43:07,310 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:43:07,310 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:43:07,310 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:43:07,310 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:43:07,830 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 300103 states, 300102 states have (on average 3.3568320104497804) internal successors, (in total 1007392), 300102 states have internal predecessors, (1007392), 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 18:43:13,866 INFO L131 ngComponentsAnalysis]: Automaton has 33368 accepting balls. 220680 [2025-04-26 18:43:13,867 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:13,867 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:13,884 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:43:13,884 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:43:13,884 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:43:14,370 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 300103 states, 300102 states have (on average 3.3568320104497804) internal successors, (in total 1007392), 300102 states have internal predecessors, (1007392), 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 18:43:18,916 INFO L131 ngComponentsAnalysis]: Automaton has 33368 accepting balls. 220680 [2025-04-26 18:43:18,916 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:18,916 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:18,931 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:43:18,931 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:43:18,935 INFO L752 eck$LassoCheckResult]: Stem: "[143] $Ultimate##0-->L14: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[234] L14-->L31: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 18:43:18,935 INFO L754 eck$LassoCheckResult]: Loop: "[179] L31-->L33: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[181] L33-->L31: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 18:43:18,939 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 5628, now seen corresponding path program 1 times [2025-04-26 18:43:18,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:18,944 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471343448] [2025-04-26 18:43:18,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:18,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:18,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:18,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:18,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:18,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:18,988 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:18,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:18,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:18,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:18,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:19,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:19,234 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:19,234 INFO L85 PathProgramCache]: Analyzing trace with hash 6691, now seen corresponding path program 1 times [2025-04-26 18:43:19,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:19,234 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080612655] [2025-04-26 18:43:19,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:19,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:19,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:19,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:19,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:19,257 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:19,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:19,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:19,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:19,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:19,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:19,270 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:19,270 INFO L85 PathProgramCache]: Analyzing trace with hash 5414238, now seen corresponding path program 1 times [2025-04-26 18:43:19,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:43:19,270 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597403738] [2025-04-26 18:43:19,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:43:19,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:43:19,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:19,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:19,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:19,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:19,278 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:43:19,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:43:19,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:43:19,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:19,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:43:19,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:43:19,364 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:19,368 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:19,368 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:19,369 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:19,369 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:43:19,369 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:19,369 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:19,369 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:19,369 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-6t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:43:19,369 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:19,369 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:19,395 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:19,437 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:19,441 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:43:19,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:19,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:19,447 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 18:43:19,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 18:43:19,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:43:19,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:19,480 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 18:43:19,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:19,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:19,484 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 18:43:19,485 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 18:43:19,487 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:43:19,487 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:43:19,566 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:43:19,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:19,571 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:43:19,571 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:43:19,571 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:43:19,571 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:43:19,572 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:43:19,572 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:19,572 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:43:19,572 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:43:19,572 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-6t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:43:19,572 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:43:19,572 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:43:19,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:43:19,599 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:43:19,610 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:43:19,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:19,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:19,616 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 18:43:19,618 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 18:43:19,619 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 18:43:19,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:43:19,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:43:19,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:43:19,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:43:19,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:43:19,642 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:43:19,642 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:43:19,654 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:43:19,664 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:43:19,664 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:43:19,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:43:19,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:19,668 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 18:43:19,669 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 18:43:19,670 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:43:19,673 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:43:19,675 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 18:43:19,676 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:43:19,677 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:43:19,677 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 18:43:19,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 18:43:19,686 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:43:19,715 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:43:19,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:19,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:19,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:19,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:19,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:43:19,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:19,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:43:19,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:43:19,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:43:19,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:43:19,748 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:43:19,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:43:19,772 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 18:43:19,807 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 18:43:20,318 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 300103 states, 300102 states have (on average 3.3568320104497804) internal successors, (in total 1007392), 300102 states have internal predecessors, (1007392), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:34,480 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 300103 states, 300102 states have (on average 3.3568320104497804) internal successors, (in total 1007392), 300102 states have internal predecessors, (1007392), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 921092 states and 3246965 transitions. Complement of second has 7 states. [2025-04-26 18:43:34,482 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:43:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:43:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2025-04-26 18:43:34,489 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 250 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 18:43:34,490 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:34,490 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 250 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:43:34,490 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:34,490 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 250 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 18:43:34,490 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:43:34,490 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 921092 states and 3246965 transitions.