/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/indep_loops_minus1_8.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:43:40,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:43:40,317 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:43:40,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:43:40,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:43:40,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:43:40,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:43:40,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:43:40,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:43:40,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:43:40,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:43:40,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:43:40,338 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:43:40,338 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:43:40,338 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:43:40,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:43:40,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:43:40,341 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:43:40,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:43:40,341 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:43:40,341 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:43:40,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:43:40,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:43:40,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:43:40,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:43:40,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:43:40,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:43:40,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:43:40,342 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:43:40,342 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:43:40,342 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:43:40,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:43:40,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:43:40,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:43:40,589 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:43:40,590 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:43:40,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/indep_loops_minus1_8.c.bpl [2025-04-26 18:43:40,593 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/indep_loops_minus1_8.c.bpl' [2025-04-26 18:43:40,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:43:40,614 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:43:40,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:43:40,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:43:40,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:43:40,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,650 INFO L138 Inliner]: procedures = 9, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:43:40,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:43:40,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:43:40,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:43:40,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:43:40,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,659 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,660 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:43:40,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:43:40,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:43:40,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:43:40,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/1) ... [2025-04-26 18:43:40,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:43:40,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:40,714 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 18:43:40,718 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 18:43:40,739 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:43:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:43:40,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:43:40,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:43:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:43:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:43:40,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 18:43:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 18:43:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 18:43:40,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:43:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:43:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:43:40,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 18:43:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 18:43:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 18:43:40,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 18:43:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 18:43:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 18:43:40,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 18:43:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 18:43:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 18:43:40,740 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2025-04-26 18:43:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2025-04-26 18:43:40,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2025-04-26 18:43:40,741 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2025-04-26 18:43:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2025-04-26 18:43:40,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2025-04-26 18:43:40,741 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 18:43:40,779 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:43:40,780 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:43:40,878 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:43:40,878 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:43:40,887 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:43:40,887 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:43:40,888 INFO L201 PluginConnector]: Adding new model indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:43:40 BoogieIcfgContainer [2025-04-26 18:43:40,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:43:40,889 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:43:40,889 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:43:40,895 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:43:40,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:43:40,896 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:43:40" (1/2) ... [2025-04-26 18:43:40,897 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5535038b and model type indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:43:40, skipping insertion in model container [2025-04-26 18:43:40,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:43:40,897 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_minus1_8.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:43:40" (2/2) ... [2025-04-26 18:43:40,900 INFO L376 chiAutomizerObserver]: Analyzing ICFG indep_loops_minus1_8.c.bpl [2025-04-26 18:43:40,995 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-26 18:43:41,046 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:43:41,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:43:41,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:43:41,050 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 18:43:41,051 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 18:43:41,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 66 transitions, 188 flow [2025-04-26 18:43:41,141 INFO L116 PetriNetUnfolderBase]: 8/50 cut-off events. [2025-04-26 18:43:41,145 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-26 18:43:41,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 50 events. 8/50 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2025-04-26 18:43:41,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 66 transitions, 188 flow [2025-04-26 18:43:41,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 50 transitions, 148 flow [2025-04-26 18:43:41,153 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 67 places, 50 transitions, 148 flow [2025-04-26 18:43:41,153 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 50 transitions, 148 flow [2025-04-26 18:43:47,372 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 135167 states, 135166 states have (on average 7.878897059911516) internal successors, (in total 1064959), 135166 states have internal predecessors, (1064959), 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 18:43:47,952 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 135167 states, 135166 states have (on average 7.878897059911516) internal successors, (in total 1064959), 135166 states have internal predecessors, (1064959), 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 18:43:47,955 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:43:55,372 WARN L140 AmpleReduction]: Number of pruned transitions: 440100 [2025-04-26 18:43:55,372 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:43:55,372 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 53286 [2025-04-26 18:43:55,372 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:43 [2025-04-26 18:43:55,372 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:68110 [2025-04-26 18:43:55,372 WARN L145 AmpleReduction]: Times succ was already a loop node:173727 [2025-04-26 18:43:55,372 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:41625 [2025-04-26 18:43:55,375 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:43:56,049 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 121440 states, 121439 states have (on average 4.251294888791904) internal successors, (in total 516273), 121439 states have internal predecessors, (516273), 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 18:43:56,069 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:43:56,070 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:43:56,070 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:43:56,070 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:43:56,070 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:43:56,070 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:43:56,070 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:43:56,070 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:43:56,382 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 121440 states, 121439 states have (on average 4.251294888791904) internal successors, (in total 516273), 121439 states have internal predecessors, (516273), 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 18:43:59,463 INFO L131 ngComponentsAnalysis]: Automaton has 12198 accepting balls. 120214 [2025-04-26 18:43:59,464 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:43:59,464 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:43:59,473 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 18:43:59,473 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:43:59,473 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:43:59,844 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 121440 states, 121439 states have (on average 4.251294888791904) internal successors, (in total 516273), 121439 states have internal predecessors, (516273), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:02,227 INFO L131 ngComponentsAnalysis]: Automaton has 12198 accepting balls. 120214 [2025-04-26 18:44:02,228 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:02,228 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:02,233 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 18:44:02,233 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:44:02,240 INFO L752 eck$LassoCheckResult]: Stem: "[159] $Ultimate##0-->L35: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 18:44:02,241 INFO L754 eck$LassoCheckResult]: Loop: "[125] L35-->L37: 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[]" "[127] L37-->L35: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 18:44:02,244 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:02,244 INFO L85 PathProgramCache]: Analyzing trace with hash 190, now seen corresponding path program 1 times [2025-04-26 18:44:02,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:02,249 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812022106] [2025-04-26 18:44:02,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:02,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:02,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:44:02,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:44:02,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:02,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:02,300 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:02,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:44:02,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:44:02,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:02,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:02,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:02,320 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash 4963, now seen corresponding path program 1 times [2025-04-26 18:44:02,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:02,320 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867128903] [2025-04-26 18:44:02,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:02,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:02,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:02,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:02,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:02,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:02,327 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:02,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:02,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:02,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:02,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:02,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:02,333 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash 186592, now seen corresponding path program 1 times [2025-04-26 18:44:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:02,334 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173164376] [2025-04-26 18:44:02,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:02,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:02,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:02,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:02,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:02,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:02,342 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:02,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:44:02,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:44:02,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:02,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:02,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:02,500 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:02,501 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:02,501 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:02,501 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:02,501 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:02,501 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:02,501 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:02,501 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:02,501 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_8.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:44:02,501 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:02,502 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:02,515 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:02,562 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:02,567 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:02,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:02,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:02,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:02,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 18:44:02,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:02,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:02,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 18:44:02,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:02,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:02,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:02,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 18:44:02,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:02,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:02,777 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:02,782 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 18:44:02,783 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:02,783 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:02,783 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:02,783 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:02,783 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:02,783 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:02,783 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:02,783 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:02,783 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_8.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:44:02,783 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:02,783 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:02,784 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:02,811 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:02,816 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:02,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:02,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:02,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:02,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 18:44:02,829 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:44:02,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:02,853 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:02,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:02,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:02,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:02,864 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:02,864 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:02,872 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:02,881 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:44:02,881 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:44:02,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:02,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:02,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 18:44:02,915 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:02,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:02,923 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:02,923 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:02,924 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 18:44:02,933 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 18:44:02,936 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:02,971 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:02,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-26 18:44:02,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-26 18:44:02,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:02,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:02,990 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:02,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:03,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:03,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:03,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:03,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:03,014 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:03,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:44:03,086 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 18:44:03,293 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 121440 states, 121439 states have (on average 4.251294888791904) internal successors, (in total 516273), 121439 states have internal predecessors, (516273), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:09,622 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 121440 states, 121439 states have (on average 4.251294888791904) internal successors, (in total 516273), 121439 states have internal predecessors, (516273), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 315235 states and 1415526 transitions. Complement of second has 6 states. [2025-04-26 18:44:09,623 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:44:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (in total 3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-04-26 18:44:09,632 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 1 letters. Loop has 2 letters. [2025-04-26 18:44:09,633 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:09,633 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 18:44:09,633 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:09,633 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 122 transitions. Stem has 1 letters. Loop has 4 letters. [2025-04-26 18:44:09,633 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:09,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315235 states and 1415526 transitions. [2025-04-26 18:44:16,071 INFO L131 ngComponentsAnalysis]: Automaton has 14038 accepting balls. 81644 [2025-04-26 18:44:20,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315235 states to 206038 states and 895446 transitions. [2025-04-26 18:44:20,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95619 [2025-04-26 18:44:20,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 140482 [2025-04-26 18:44:20,954 INFO L74 IsDeterministic]: Start isDeterministic. Operand 206038 states and 895446 transitions. [2025-04-26 18:44:20,954 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:44:20,954 INFO L218 hiAutomatonCegarLoop]: Abstraction has 206038 states and 895446 transitions. [2025-04-26 18:44:21,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206038 states and 895446 transitions. [2025-04-26 18:44:26,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206038 to 163893. [2025-04-26 18:44:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163893 states, 163893 states have (on average 4.46244195908306) internal successors, (in total 731363), 163892 states have internal predecessors, (731363), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163893 states to 163893 states and 731363 transitions. [2025-04-26 18:44:29,132 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163893 states and 731363 transitions. [2025-04-26 18:44:29,133 INFO L438 stractBuchiCegarLoop]: Abstraction has 163893 states and 731363 transitions. [2025-04-26 18:44:29,133 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:44:29,133 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163893 states and 731363 transitions. [2025-04-26 18:44:30,886 INFO L131 ngComponentsAnalysis]: Automaton has 14038 accepting balls. 81644 [2025-04-26 18:44:30,886 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:44:30,886 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:44:30,893 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 18:44:30,893 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:44:30,898 INFO L752 eck$LassoCheckResult]: Stem: "[159] $Ultimate##0-->L35: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[124] L35-->thread1FINAL: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[126] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[162] L14-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 18:44:30,898 INFO L754 eck$LassoCheckResult]: Loop: "[129] L44-->L46: Formula: (< v_x2_1 v_z_3) InVars {x2=v_x2_1, z=v_z_3} OutVars{x2=v_x2_1, z=v_z_3} AuxVars[] AssignedVars[]" "[131] L46-->L44: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 18:44:30,899 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash 5783522, now seen corresponding path program 1 times [2025-04-26 18:44:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:30,900 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303122554] [2025-04-26 18:44:30,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:30,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:44:30,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:44:30,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:30,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:30,909 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:30,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:44:30,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:44:30,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:30,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:30,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:30,921 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 5091, now seen corresponding path program 1 times [2025-04-26 18:44:30,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:30,922 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658458817] [2025-04-26 18:44:30,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:30,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:30,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:30,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:30,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:30,929 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:30,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:30,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:30,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:30,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:30,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:30,938 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1263001476, now seen corresponding path program 1 times [2025-04-26 18:44:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:44:30,938 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602943142] [2025-04-26 18:44:30,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:44:30,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:44:30,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:44:30,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:44:30,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:30,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:30,947 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:44:30,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:44:30,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:44:30,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:30,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:44:30,957 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:44:30,985 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:30,985 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:30,985 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:30,985 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:30,985 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:44:30,985 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:30,985 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:30,985 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:30,985 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_8.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:44:30,985 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:30,986 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:30,986 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:31,012 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:31,013 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:44:31,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:31,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:31,018 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:31,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 18:44:31,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:44:31,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:31,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 18:44:31,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:31,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:31,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:31,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 18:44:31,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:44:31,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:44:31,118 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:44:31,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 18:44:31,123 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:44:31,123 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:44:31,123 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:44:31,123 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:44:31,123 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:44:31,123 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:31,123 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:44:31,123 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:44:31,123 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_8.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:44:31,123 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:44:31,123 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:44:31,124 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:44:31,149 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:44:31,149 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:44:31,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:31,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:31,151 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:31,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 18:44:31,157 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:44:31,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:44:31,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:44:31,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:44:31,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:44:31,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:44:31,173 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:44:31,173 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:44:31,175 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:44:31,179 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:44:31,180 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:44:31,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:44:31,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:44:31,182 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:44:31,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 18:44:31,188 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:44:31,191 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 18:44:31,192 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:44:31,192 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:44:31,192 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-04-26 18:44:31,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 18:44:31,208 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:44:31,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:44:31,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:44:31,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:44:31,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:31,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:31,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:44:31,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:31,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:44:31,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:44:31,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:44:31,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:44:31,270 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:44:31,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:44:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:44:31,288 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 18:44:31,288 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 163893 states and 731363 transitions. cyclomatic complexity: 584660 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:39,071 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 163893 states and 731363 transitions. cyclomatic complexity: 584660. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 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 440040 states and 1963507 transitions. Complement of second has 6 states. [2025-04-26 18:44:39,071 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:44:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:44:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-04-26 18:44:39,072 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 124 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:44:39,073 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:39,073 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 124 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 18:44:39,073 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:39,073 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 124 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 18:44:39,073 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:44:39,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 440040 states and 1963507 transitions. [2025-04-26 18:44:46,811 INFO L131 ngComponentsAnalysis]: Automaton has 14963 accepting balls. 55960 [2025-04-26 18:44:51,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 440040 states to 293709 states and 1284077 transitions. [2025-04-26 18:44:51,426 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 106189 [2025-04-26 18:44:51,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 140343 [2025-04-26 18:44:51,933 INFO L74 IsDeterministic]: Start isDeterministic. Operand 293709 states and 1284077 transitions. [2025-04-26 18:44:51,933 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:44:51,933 INFO L218 hiAutomatonCegarLoop]: Abstraction has 293709 states and 1284077 transitions. [2025-04-26 18:44:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293709 states and 1284077 transitions.