/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_9.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:58:25,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:58:25,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:58:25,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:58:25,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:58:25,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:58:25,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:58:25,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:58:25,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:58:25,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:58:25,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:58:25,986 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:58:25,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:58:25,986 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:58:25,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:58:25,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:58:25,987 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:58:25,987 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:58:26,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:58:26,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:58:26,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:58:26,199 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:58:26,200 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:58:26,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/indep_loops_minus1_9.c.bpl [2025-04-26 16:58:26,201 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/indep_loops_minus1_9.c.bpl' [2025-04-26 16:58:26,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:58:26,222 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:58:26,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:58:26,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:58:26,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:58:26,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,249 INFO L138 Inliner]: procedures = 10, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:58:26,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:58:26,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:58:26,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:58:26,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:58:26,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,266 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:58:26,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:58:26,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:58:26,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:58:26,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/1) ... [2025-04-26 16:58:26,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:58:26,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:26,306 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 16:58:26,311 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 16:58:26,332 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:58:26,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:58:26,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:58:26,332 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:58:26,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:58:26,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:58:26,332 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:58:26,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:58:26,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:58:26,332 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:58:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:58:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:58:26,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:58:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:58:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:58:26,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:58:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:58:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:58:26,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-04-26 16:58:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-04-26 16:58:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-04-26 16:58:26,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2025-04-26 16:58:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2025-04-26 16:58:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2025-04-26 16:58:26,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2025-04-26 16:58:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2025-04-26 16:58:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2025-04-26 16:58:26,333 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread9 given in one single declaration [2025-04-26 16:58:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread9 [2025-04-26 16:58:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread9 [2025-04-26 16:58:26,334 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 16:58:26,376 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:58:26,377 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:58:26,477 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:58:26,478 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:58:26,488 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:58:26,488 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:58:26,488 INFO L201 PluginConnector]: Adding new model indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:58:26 BoogieIcfgContainer [2025-04-26 16:58:26,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:58:26,489 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:58:26,489 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:58:26,493 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:58:26,494 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:58:26,494 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:26" (1/2) ... [2025-04-26 16:58:26,496 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f1e8c14 and model type indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:58:26, skipping insertion in model container [2025-04-26 16:58:26,496 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:58:26,496 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_minus1_9.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:58:26" (2/2) ... [2025-04-26 16:58:26,497 INFO L376 chiAutomizerObserver]: Analyzing ICFG indep_loops_minus1_9.c.bpl [2025-04-26 16:58:26,591 INFO L143 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2025-04-26 16:58:26,624 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:58:26,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:58:26,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:26,627 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 16:58:26,629 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 16:58:26,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 74 transitions, 211 flow [2025-04-26 16:58:26,714 INFO L116 PetriNetUnfolderBase]: 9/56 cut-off events. [2025-04-26 16:58:26,715 INFO L117 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-04-26 16:58:26,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 56 events. 9/56 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2025-04-26 16:58:26,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 74 transitions, 211 flow [2025-04-26 16:58:26,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 56 transitions, 166 flow [2025-04-26 16:58:26,723 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 75 places, 56 transitions, 166 flow [2025-04-26 16:58:26,728 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:59:25,986 WARN L140 AmpleReduction]: Number of pruned transitions: 2001820 [2025-04-26 16:59:25,986 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:59:25,986 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 176527 [2025-04-26 16:59:25,986 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:48 [2025-04-26 16:59:25,986 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:270748 [2025-04-26 16:59:25,986 WARN L145 AmpleReduction]: Times succ was already a loop node:634109 [2025-04-26 16:59:25,986 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:307953 [2025-04-26 16:59:25,986 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:59:27,287 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 447324 states, 447323 states have (on average 4.255157906032107) internal successors, (in total 1903430), 447323 states have internal predecessors, (1903430), 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 16:59:27,301 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:59:27,301 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:59:27,301 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:59:27,301 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:59:27,302 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:59:27,302 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:59:27,302 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:59:27,302 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:59:28,087 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 447324 states, 447323 states have (on average 4.255157906032107) internal successors, (in total 1903430), 447323 states have internal predecessors, (1903430), 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 16:59:39,494 INFO L131 ngComponentsAnalysis]: Automaton has 37450 accepting balls. 445408 [2025-04-26 16:59:39,495 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:39,495 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:39,534 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:59:39,534 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:59:39,535 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:59:40,281 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 447324 states, 447323 states have (on average 4.255157906032107) internal successors, (in total 1903430), 447323 states have internal predecessors, (1903430), 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 16:59:47,561 INFO L131 ngComponentsAnalysis]: Automaton has 37450 accepting balls. 445408 [2025-04-26 16:59:47,561 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:47,561 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:47,574 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-04-26 16:59:47,574 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:59:47,578 INFO L752 eck$LassoCheckResult]: Stem: "[178] $Ultimate##0-->L38: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:59:47,578 INFO L754 eck$LassoCheckResult]: Loop: "[140] L38-->L40: 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[]" "[142] L40-->L38: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:59:47,581 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash 209, now seen corresponding path program 1 times [2025-04-26 16:59:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:47,586 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886311494] [2025-04-26 16:59:47,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms