/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/pc5v.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:58:57,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:58:57,773 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:58:57,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:58:57,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:58:57,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:58:57,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:58:57,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:58:57,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:58:57,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:58:57,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:58:57,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:58:57,803 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:58:57,803 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:58:57,804 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:58:57,804 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:58:57,804 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:58:57,804 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:58:57,804 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:58:57,804 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:58:57,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:58:57,805 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:58:57,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:58:57,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:58:57,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:58:57,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:58:57,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:58:57,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:58:57,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:58:57,806 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:58:57,806 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:58:57,806 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:58:58,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:58:58,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:58:58,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:58:58,053 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:58:58,054 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:58:58,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/pc5v.c.bpl [2025-04-26 16:58:58,056 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/pc5v.c.bpl' [2025-04-26 16:58:58,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:58:58,074 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:58:58,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:58:58,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:58:58,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:58:58,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,108 INFO L138 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:58:58,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:58:58,110 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:58:58,110 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:58:58,110 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:58:58,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,121 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:58:58,137 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:58:58,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:58:58,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:58:58,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/1) ... [2025-04-26 16:58:58,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:58:58,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:58,164 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 16:58:58,167 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 16:58:58,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:58:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:58:58,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:58:58,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:58:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:58:58,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:58:58,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:58:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:58:58,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:58:58,190 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:58:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:58:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:58:58,190 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:58:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:58:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:58:58,190 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:58:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:58:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:58:58,190 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 16:58:58,228 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:58:58,230 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:58:58,331 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:58:58,331 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:58:58,343 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:58:58,343 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:58:58,343 INFO L201 PluginConnector]: Adding new model pc5v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:58:58 BoogieIcfgContainer [2025-04-26 16:58:58,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:58:58,344 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:58:58,344 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:58:58,349 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:58:58,349 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:58:58,350 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:58:58" (1/2) ... [2025-04-26 16:58:58,350 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31b236b6 and model type pc5v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:58:58, skipping insertion in model container [2025-04-26 16:58:58,351 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:58:58,351 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "pc5v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:58:58" (2/2) ... [2025-04-26 16:58:58,351 INFO L376 chiAutomizerObserver]: Analyzing ICFG pc5v.c.bpl [2025-04-26 16:58:58,422 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-04-26 16:58:58,464 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:58:58,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:58:58,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:58:58,469 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 16:58:58,471 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 16:58:58,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 52 transitions, 139 flow [2025-04-26 16:58:58,557 INFO L116 PetriNetUnfolderBase]: 5/42 cut-off events. [2025-04-26 16:58:58,558 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-26 16:58:58,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 42 events. 5/42 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2025-04-26 16:58:58,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 52 transitions, 139 flow [2025-04-26 16:58:58,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 42 transitions, 114 flow [2025-04-26 16:58:58,569 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 53 places, 42 transitions, 114 flow [2025-04-26 16:58:58,576 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:59:00,085 WARN L140 AmpleReduction]: Number of pruned transitions: 30204 [2025-04-26 16:59:00,086 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:59:00,086 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 2693 [2025-04-26 16:59:00,086 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:36 [2025-04-26 16:59:00,086 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:8154 [2025-04-26 16:59:00,086 WARN L145 AmpleReduction]: Times succ was already a loop node:1443 [2025-04-26 16:59:00,086 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:6434 [2025-04-26 16:59:00,086 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:59:00,117 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 10884 states, 10883 states have (on average 2.1686115960672607) internal successors, (in total 23601), 10883 states have internal predecessors, (23601), 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 16:59:00,125 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:59:00,125 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:59:00,125 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:59:00,125 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:59:00,125 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:59:00,125 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:59:00,125 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:59:00,125 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:59:00,150 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10884 states, 10883 states have (on average 2.1686115960672607) internal successors, (in total 23601), 10883 states have internal predecessors, (23601), 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 16:59:00,336 INFO L131 ngComponentsAnalysis]: Automaton has 806 accepting balls. 8094 [2025-04-26 16:59:00,336 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:00,336 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:00,341 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:59:00,341 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:00,341 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:59:00,367 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10884 states, 10883 states have (on average 2.1686115960672607) internal successors, (in total 23601), 10883 states have internal predecessors, (23601), 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 16:59:00,498 INFO L131 ngComponentsAnalysis]: Automaton has 806 accepting balls. 8094 [2025-04-26 16:59:00,498 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:00,498 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:00,499 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:59:00,499 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:00,503 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-04-26 16:59:00,504 INFO L754 eck$LassoCheckResult]: Loop: "[101] L30-->L32: Formula: (< v_x1_1 v_z1_1) InVars {x1=v_x1_1, z1=v_z1_1} OutVars{x1=v_x1_1, z1=v_z1_1} AuxVars[] AssignedVars[]" "[103] L32-->L33: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[105] L33-->L30: Formula: (= (+ v_c_2 1) v_c_1) InVars {c=v_c_2} OutVars{c=v_c_1} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:00,508 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash 3917, now seen corresponding path program 1 times [2025-04-26 16:59:00,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:00,514 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939367998] [2025-04-26 16:59:00,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:00,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:59:00,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:59:00,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:00,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:00,563 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:00,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:59:00,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:59:00,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:00,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:00,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:00,583 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash 130150, now seen corresponding path program 1 times [2025-04-26 16:59:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:00,583 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991338411] [2025-04-26 16:59:00,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:00,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:00,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:00,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:00,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:00,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:00,593 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:00,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:00,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:00,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:00,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:00,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:00,597 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash 116791706, now seen corresponding path program 1 times [2025-04-26 16:59:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:00,597 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484962892] [2025-04-26 16:59:00,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:00,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:00,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:59:00,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:59:00,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:00,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:00,604 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:00,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:59:00,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:59:00,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:00,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:00,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:00,683 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:00,684 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:00,684 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:00,684 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:00,684 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:00,684 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:00,684 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:00,684 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:00,685 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:59:00,685 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:00,685 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:00,701 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:00,714 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:00,769 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:00,776 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:00,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:00,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:00,784 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 16:59:00,786 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 16:59:00,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:00,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:00,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:00,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:00,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:00,819 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 16:59:00,820 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 16:59:00,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:00,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:00,895 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:00,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:00,900 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:00,900 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:00,901 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:00,901 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:00,901 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:00,901 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:00,901 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:00,901 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:00,901 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:59:00,901 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:00,901 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:00,902 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:00,911 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:00,939 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:00,942 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:00,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:00,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:00,947 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 16:59:00,949 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 16:59:00,951 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 16:59:00,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:00,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:00,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:00,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:00,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:00,969 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:00,969 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:00,973 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:00,978 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:59:00,978 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:59:00,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:00,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:00,983 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 16:59:00,984 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 16:59:00,984 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:00,987 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:59:00,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:59:00,989 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:00,989 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:00,990 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z1, x1) = 1*z1 - 1*x1 Supporting invariants [] [2025-04-26 16:59:00,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:01,001 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:01,022 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:01,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:59:01,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:59:01,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:01,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:01,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:01,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:01,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:01,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:01,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:01,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:01,049 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:01,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:01,104 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 16:59:01,122 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:01,142 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10884 states, 10883 states have (on average 2.1686115960672607) internal successors, (in total 23601), 10883 states have internal predecessors, (23601), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:01,476 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10884 states, 10883 states have (on average 2.1686115960672607) internal successors, (in total 23601), 10883 states have internal predecessors, (23601), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 22286 states and 48758 transitions. Complement of second has 6 states. [2025-04-26 16:59:01,481 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 16:59:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (in total 5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2025-04-26 16:59:01,490 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 100 transitions. Stem has 2 letters. Loop has 3 letters. [2025-04-26 16:59:01,491 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:01,491 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 100 transitions. Stem has 5 letters. Loop has 3 letters. [2025-04-26 16:59:01,491 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:01,491 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 100 transitions. Stem has 2 letters. Loop has 6 letters. [2025-04-26 16:59:01,491 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:01,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22286 states and 48758 transitions. [2025-04-26 16:59:01,848 INFO L131 ngComponentsAnalysis]: Automaton has 465 accepting balls. 3429 [2025-04-26 16:59:01,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22286 states to 13981 states and 30242 transitions. [2025-04-26 16:59:01,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6976 [2025-04-26 16:59:02,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8978 [2025-04-26 16:59:02,015 INFO L74 IsDeterministic]: Start isDeterministic. Operand 13981 states and 30242 transitions. [2025-04-26 16:59:02,015 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:02,015 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13981 states and 30242 transitions. [2025-04-26 16:59:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13981 states and 30242 transitions. [2025-04-26 16:59:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13981 to 12980. [2025-04-26 16:59:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12980 states, 12980 states have (on average 2.252773497688752) internal successors, (in total 29241), 12979 states have internal predecessors, (29241), 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 16:59:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12980 states to 12980 states and 29241 transitions. [2025-04-26 16:59:02,420 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12980 states and 29241 transitions. [2025-04-26 16:59:02,421 INFO L438 stractBuchiCegarLoop]: Abstraction has 12980 states and 29241 transitions. [2025-04-26 16:59:02,421 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:59:02,421 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12980 states and 29241 transitions. [2025-04-26 16:59:02,500 INFO L131 ngComponentsAnalysis]: Automaton has 465 accepting balls. 3429 [2025-04-26 16:59:02,500 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:02,500 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:02,501 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 16:59:02,501 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:02,501 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[100] L30-->L35: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[102] L35-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[104] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[138] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" [2025-04-26 16:59:02,501 INFO L754 eck$LassoCheckResult]: Loop: "[107] L41-->L43: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[109] L43-->L44: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[111] L44-->L41: Formula: (= (+ v_c_4 1) v_c_3) InVars {c=v_c_4} OutVars{c=v_c_3} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:02,502 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash -674455055, now seen corresponding path program 1 times [2025-04-26 16:59:02,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:02,502 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103485288] [2025-04-26 16:59:02,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:02,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:02,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:59:02,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:59:02,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,507 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:02,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:59:02,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:59:02,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:02,517 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash 136108, now seen corresponding path program 1 times [2025-04-26 16:59:02,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:02,517 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847625872] [2025-04-26 16:59:02,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:02,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:02,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:02,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:02,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,525 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:02,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:02,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:02,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:02,528 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash -833426500, now seen corresponding path program 1 times [2025-04-26 16:59:02,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:02,529 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463321459] [2025-04-26 16:59:02,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:02,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:02,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:59:02,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:59:02,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,537 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:02,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:59:02,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:59:02,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:02,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:02,561 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:02,561 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:02,561 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:02,561 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:02,561 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:02,561 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,561 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:02,561 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:02,561 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:59:02,561 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:02,561 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:02,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:02,565 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:02,589 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:02,590 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:02,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,592 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 16:59:02,593 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 16:59:02,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:02,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:02,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:02,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,613 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 16:59:02,614 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 16:59:02,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:02,615 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:02,648 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:02,648 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 16:59:02,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:59:02,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,656 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 16:59:02,658 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 16:59:02,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:02,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:02,681 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 16:59:02,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,683 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 16:59:02,684 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 16:59:02,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:02,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:02,753 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:02,758 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 16:59:02,758 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:02,758 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:02,758 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:02,758 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:02,758 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:02,758 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,758 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:02,758 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:02,758 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:59:02,758 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:02,759 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:02,759 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:02,764 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:02,793 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:02,794 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:02,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:02,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-04-26 16:59:02,799 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 16:59:02,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:02,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:02,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:02,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:02,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:02,810 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:02,810 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:02,812 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:02,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:59:02,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,820 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:02,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-04-26 16:59:02,824 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 16:59:02,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:02,834 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:02,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:02,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:02,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:02,836 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:02,836 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:02,839 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:02,841 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:02,841 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:59:02,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:02,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:02,844 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:02,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-04-26 16:59:02,847 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:02,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:59:02,851 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:02,851 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:02,852 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-04-26 16:59:02,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:02,860 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:02,875 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:02,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:59:02,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:59:02,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:02,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:02,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:02,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:02,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:02,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:02,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:02,898 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:02,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:02,927 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 16:59:02,928 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:02,928 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12980 states and 29241 transitions. cyclomatic complexity: 17013 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:03,409 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12980 states and 29241 transitions. cyclomatic complexity: 17013. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 28827 states and 64308 transitions. Complement of second has 6 states. [2025-04-26 16:59:03,410 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 16:59:03,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (in total 9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:59:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-04-26 16:59:03,411 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 104 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 16:59:03,411 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:03,411 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 104 transitions. Stem has 9 letters. Loop has 3 letters. [2025-04-26 16:59:03,411 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:03,411 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 104 transitions. Stem has 6 letters. Loop has 6 letters. [2025-04-26 16:59:03,411 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:03,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28827 states and 64308 transitions. [2025-04-26 16:59:03,765 INFO L131 ngComponentsAnalysis]: Automaton has 231 accepting balls. 1227 [2025-04-26 16:59:03,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28827 states to 18830 states and 41971 transitions. [2025-04-26 16:59:03,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7215 [2025-04-26 16:59:03,934 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8365 [2025-04-26 16:59:03,934 INFO L74 IsDeterministic]: Start isDeterministic. Operand 18830 states and 41971 transitions. [2025-04-26 16:59:03,935 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:03,935 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18830 states and 41971 transitions. [2025-04-26 16:59:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18830 states and 41971 transitions. [2025-04-26 16:59:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18830 to 17746. [2025-04-26 16:59:04,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17746 states, 17746 states have (on average 2.2517750478981178) internal successors, (in total 39960), 17745 states have internal predecessors, (39960), 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 16:59:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17746 states to 17746 states and 39960 transitions. [2025-04-26 16:59:04,399 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17746 states and 39960 transitions. [2025-04-26 16:59:04,399 INFO L438 stractBuchiCegarLoop]: Abstraction has 17746 states and 39960 transitions. [2025-04-26 16:59:04,399 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:59:04,399 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17746 states and 39960 transitions. [2025-04-26 16:59:04,477 INFO L131 ngComponentsAnalysis]: Automaton has 231 accepting balls. 1227 [2025-04-26 16:59:04,478 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:04,478 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:04,478 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:59:04,478 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:04,479 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[100] L30-->L35: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[102] L35-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[104] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[138] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[106] L41-->L46: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[108] L46-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[110] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[141] L16-->L52: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" [2025-04-26 16:59:04,479 INFO L754 eck$LassoCheckResult]: Loop: "[113] L52-->L54: Formula: (< v_y1_1 v_z1_3) InVars {y1=v_y1_1, z1=v_z1_3} OutVars{y1=v_y1_1, z1=v_z1_3} AuxVars[] AssignedVars[]" "[115] L54-->L55: Formula: (= v_y1_2 (+ v_y1_3 1)) InVars {y1=v_y1_3} OutVars{y1=v_y1_2} AuxVars[] AssignedVars[y1]" "[117] L55-->L52: Formula: (= v_c_5 (+ v_c_6 1)) InVars {c=v_c_6} OutVars{c=v_c_5} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:04,479 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,479 INFO L85 PathProgramCache]: Analyzing trace with hash -66448366, now seen corresponding path program 1 times [2025-04-26 16:59:04,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:04,480 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309925479] [2025-04-26 16:59:04,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:04,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:04,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:59:04,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:59:04,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,485 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:04,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:59:04,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:59:04,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:04,490 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,490 INFO L85 PathProgramCache]: Analyzing trace with hash 142066, now seen corresponding path program 1 times [2025-04-26 16:59:04,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:04,490 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823968746] [2025-04-26 16:59:04,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:04,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:04,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:04,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:04,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,493 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:04,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:04,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:04,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:04,496 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,496 INFO L85 PathProgramCache]: Analyzing trace with hash 416764225, now seen corresponding path program 1 times [2025-04-26 16:59:04,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:04,496 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589096022] [2025-04-26 16:59:04,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:04,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:04,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-26 16:59:04,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-26 16:59:04,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,501 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:04,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-26 16:59:04,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-26 16:59:04,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:04,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:04,527 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:04,528 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:04,528 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:04,528 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:04,528 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:04,528 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,528 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:04,528 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:04,528 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:59:04,528 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:04,528 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:04,528 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,533 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,561 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:04,561 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:04,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,563 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-04-26 16:59:04,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:04,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-04-26 16:59:04,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,587 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-04-26 16:59:04,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:04,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,622 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:04,622 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=-3}, {c=-3}, {c=7}] Lambdas: [0, 1, 1] Nus: [1, 0] [2025-04-26 16:59:04,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:04,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,630 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-04-26 16:59:04,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:04,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-04-26 16:59:04,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,651 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-04-26 16:59:04,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:04,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:04,720 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:04,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 16:59:04,725 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:04,725 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:04,725 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:04,725 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:04,725 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:04,725 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,725 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:04,725 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:04,725 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:59:04,725 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:04,725 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:04,726 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,733 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:04,757 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:04,757 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:04,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,759 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-04-26 16:59:04,763 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 16:59:04,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:04,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:04,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:04,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:04,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:04,774 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:04,774 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:04,776 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:04,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-04-26 16:59:04,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,783 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-04-26 16:59:04,787 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 16:59:04,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:04,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:04,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:04,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:04,798 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:04,799 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:04,799 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:04,801 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:04,805 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:59:04,805 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:59:04,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:04,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:04,807 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:04,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-04-26 16:59:04,810 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:04,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-04-26 16:59:04,813 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:04,813 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:04,813 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, z1) = -1*y1 + 1*z1 Supporting invariants [] [2025-04-26 16:59:04,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-04-26 16:59:04,819 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:04,831 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:04,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:59:04,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:59:04,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:04,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:04,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:04,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:04,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:04,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:04,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:04,863 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:04,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:04,894 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 16:59:04,895 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:04,895 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17746 states and 39960 transitions. cyclomatic complexity: 23028 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 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 16:59:05,220 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17746 states and 39960 transitions. cyclomatic complexity: 23028. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 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 41559 states and 92647 transitions. Complement of second has 6 states. [2025-04-26 16:59:05,224 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 16:59:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (in total 13), 4 states have internal predecessors, (13), 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 16:59:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-04-26 16:59:05,225 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 109 transitions. Stem has 10 letters. Loop has 3 letters. [2025-04-26 16:59:05,225 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:05,225 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 109 transitions. Stem has 13 letters. Loop has 3 letters. [2025-04-26 16:59:05,225 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:05,225 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 109 transitions. Stem has 10 letters. Loop has 6 letters. [2025-04-26 16:59:05,226 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:05,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41559 states and 92647 transitions. [2025-04-26 16:59:05,806 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 387 [2025-04-26 16:59:05,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41559 states to 25462 states and 56233 transitions. [2025-04-26 16:59:05,942 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7389 [2025-04-26 16:59:05,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7954 [2025-04-26 16:59:05,955 INFO L74 IsDeterministic]: Start isDeterministic. Operand 25462 states and 56233 transitions. [2025-04-26 16:59:05,955 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:05,955 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25462 states and 56233 transitions. [2025-04-26 16:59:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25462 states and 56233 transitions. [2025-04-26 16:59:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25462 to 24728. [2025-04-26 16:59:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24728 states, 24728 states have (on average 2.229375606599806) internal successors, (in total 55128), 24727 states have internal predecessors, (55128), 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 16:59:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24728 states to 24728 states and 55128 transitions. [2025-04-26 16:59:06,484 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24728 states and 55128 transitions. [2025-04-26 16:59:06,484 INFO L438 stractBuchiCegarLoop]: Abstraction has 24728 states and 55128 transitions. [2025-04-26 16:59:06,484 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:59:06,484 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24728 states and 55128 transitions. [2025-04-26 16:59:06,685 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 387 [2025-04-26 16:59:06,685 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:06,685 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:06,686 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:59:06,686 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:06,687 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[100] L30-->L35: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[102] L35-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[104] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[138] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[106] L41-->L46: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[108] L46-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[110] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[141] L16-->L52: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" "[112] L52-->L57: Formula: (<= v_z1_4 v_y1_4) InVars {y1=v_y1_4, z1=v_z1_4} OutVars{y1=v_y1_4, z1=v_z1_4} AuxVars[] AssignedVars[]" "[114] L57-->thread3FINAL: Formula: (= v_f_5 (+ v_f_6 1)) InVars {f=v_f_6} OutVars{f=v_f_5} AuxVars[] AssignedVars[f]" "[116] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[144] L17-->L63: Formula: (and (= v_thread4Thread1of1ForFork4_thidvar2_2 4) (= v_thread4Thread1of1ForFork4_thidvar0_2 4) (= v_thread4Thread1of1ForFork4_thidvar1_2 4) (= v_thread4Thread1of1ForFork4_thidvar3_2 4)) InVars {} OutVars{thread4Thread1of1ForFork4_thidvar0=v_thread4Thread1of1ForFork4_thidvar0_2, thread4Thread1of1ForFork4_thidvar1=v_thread4Thread1of1ForFork4_thidvar1_2, thread4Thread1of1ForFork4_thidvar2=v_thread4Thread1of1ForFork4_thidvar2_2, thread4Thread1of1ForFork4_thidvar3=v_thread4Thread1of1ForFork4_thidvar3_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork4_thidvar0, thread4Thread1of1ForFork4_thidvar1, thread4Thread1of1ForFork4_thidvar2, thread4Thread1of1ForFork4_thidvar3]" [2025-04-26 16:59:06,687 INFO L754 eck$LassoCheckResult]: Loop: "[119] L63-->L65: Formula: (< v_x3_1 v_z1_5) InVars {x3=v_x3_1, z1=v_z1_5} OutVars{x3=v_x3_1, z1=v_z1_5} AuxVars[] AssignedVars[]" "[121] L65-->L66: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[123] L66-->L63: Formula: (= v_c_7 (+ v_c_8 1)) InVars {c=v_c_8} OutVars{c=v_c_7} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:06,687 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash 34758448, now seen corresponding path program 1 times [2025-04-26 16:59:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:06,687 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654626555] [2025-04-26 16:59:06,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:06,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 16:59:06,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 16:59:06,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:06,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:06,702 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:06,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 16:59:06,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 16:59:06,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:06,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:06,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:06,715 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:06,715 INFO L85 PathProgramCache]: Analyzing trace with hash 148024, now seen corresponding path program 1 times [2025-04-26 16:59:06,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:06,715 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059960668] [2025-04-26 16:59:06,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:06,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:06,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:06,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:06,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:06,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:06,726 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:06,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:06,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:06,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:06,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:06,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:06,731 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash 401924265, now seen corresponding path program 1 times [2025-04-26 16:59:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:06,731 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707890252] [2025-04-26 16:59:06,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:06,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-26 16:59:06,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-26 16:59:06,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:06,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:06,748 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:06,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-26 16:59:06,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-26 16:59:06,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:06,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:06,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:06,793 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:06,793 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:06,793 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:06,793 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:06,793 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:06,793 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:06,793 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:06,793 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:06,793 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:59:06,793 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:06,793 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:06,794 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:06,803 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:06,824 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:06,824 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:06,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:06,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:06,828 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:06,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:06,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:06,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-04-26 16:59:06,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:06,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:06,873 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:06,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-04-26 16:59:06,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:06,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:06,983 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:06,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:06,992 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:06,992 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:06,992 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:06,992 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:06,993 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:06,993 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:06,993 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:06,993 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:06,993 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:59:06,993 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:06,993 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:06,994 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:07,006 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:07,042 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:07,042 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:07,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:07,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:07,047 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:07,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-04-26 16:59:07,054 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 16:59:07,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:07,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:07,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:07,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:07,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:07,075 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:07,075 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:07,077 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:07,084 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:07,084 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:59:07,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:07,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:07,086 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:07,093 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:07,096 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:59:07,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-04-26 16:59:07,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-04-26 16:59:07,096 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:07,096 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:07,096 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z1) = -1*x3 + 1*z1 Supporting invariants [] [2025-04-26 16:59:07,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-04-26 16:59:07,112 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:07,132 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:07,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 16:59:07,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 16:59:07,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:07,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:07,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:07,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:07,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:07,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:07,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:07,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:07,175 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:07,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:07,200 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 16:59:07,201 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:07,201 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24728 states and 55128 transitions. cyclomatic complexity: 31418 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (in total 17), 4 states have internal predecessors, (17), 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 16:59:07,556 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24728 states and 55128 transitions. cyclomatic complexity: 31418. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (in total 17), 4 states have internal predecessors, (17), 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 57667 states and 126810 transitions. Complement of second has 6 states. [2025-04-26 16:59:07,556 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 16:59:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (in total 17), 4 states have internal predecessors, (17), 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 16:59:07,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-04-26 16:59:07,557 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 14 letters. Loop has 3 letters. [2025-04-26 16:59:07,557 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:07,557 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 17 letters. Loop has 3 letters. [2025-04-26 16:59:07,557 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:07,557 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 14 letters. Loop has 6 letters. [2025-04-26 16:59:07,558 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:07,558 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57667 states and 126810 transitions. [2025-04-26 16:59:07,986 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 93 [2025-04-26 16:59:08,170 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57667 states to 31755 states and 69189 transitions. [2025-04-26 16:59:08,170 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7395 [2025-04-26 16:59:08,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7682 [2025-04-26 16:59:08,183 INFO L74 IsDeterministic]: Start isDeterministic. Operand 31755 states and 69189 transitions. [2025-04-26 16:59:08,184 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:59:08,184 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31755 states and 69189 transitions. [2025-04-26 16:59:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31755 states and 69189 transitions. [2025-04-26 16:59:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31755 to 31152. [2025-04-26 16:59:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31152 states, 31152 states have (on average 2.197290703646636) internal successors, (in total 68450), 31151 states have internal predecessors, (68450), 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 16:59:08,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31152 states to 31152 states and 68450 transitions. [2025-04-26 16:59:08,856 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31152 states and 68450 transitions. [2025-04-26 16:59:08,856 INFO L438 stractBuchiCegarLoop]: Abstraction has 31152 states and 68450 transitions. [2025-04-26 16:59:08,856 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:59:08,856 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31152 states and 68450 transitions. [2025-04-26 16:59:09,104 INFO L131 ngComponentsAnalysis]: Automaton has 31 accepting balls. 93 [2025-04-26 16:59:09,104 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:59:09,104 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:59:09,109 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:59:09,109 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:59:09,110 INFO L752 eck$LassoCheckResult]: Stem: "[91] $Ultimate##0-->L15: Formula: (= v_f_7 0) InVars {f=v_f_7} OutVars{f=v_f_7} AuxVars[] AssignedVars[]" "[135] L15-->L30: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[100] L30-->L35: Formula: (<= v_z1_2 v_x1_4) InVars {x1=v_x1_4, z1=v_z1_2} OutVars{x1=v_x1_4, z1=v_z1_2} AuxVars[] AssignedVars[]" "[102] L35-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[104] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[138] L15-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork2_thidvar1_2) (= 2 v_thread2Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_2, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_thidvar1, thread2Thread1of1ForFork2_thidvar0]" "[106] L41-->L46: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" "[108] L46-->thread2FINAL: Formula: (= (+ v_f_4 1) v_f_3) InVars {f=v_f_4} OutVars{f=v_f_3} AuxVars[] AssignedVars[f]" "[110] thread2FINAL-->thread2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[141] L16-->L52: Formula: (and (= v_thread3Thread1of1ForFork3_thidvar2_2 3) (= v_thread3Thread1of1ForFork3_thidvar1_2 3) (= v_thread3Thread1of1ForFork3_thidvar0_2 3)) InVars {} OutVars{thread3Thread1of1ForFork3_thidvar0=v_thread3Thread1of1ForFork3_thidvar0_2, thread3Thread1of1ForFork3_thidvar2=v_thread3Thread1of1ForFork3_thidvar2_2, thread3Thread1of1ForFork3_thidvar1=v_thread3Thread1of1ForFork3_thidvar1_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork3_thidvar0, thread3Thread1of1ForFork3_thidvar2, thread3Thread1of1ForFork3_thidvar1]" "[112] L52-->L57: Formula: (<= v_z1_4 v_y1_4) InVars {y1=v_y1_4, z1=v_z1_4} OutVars{y1=v_y1_4, z1=v_z1_4} AuxVars[] AssignedVars[]" "[114] L57-->thread3FINAL: Formula: (= v_f_5 (+ v_f_6 1)) InVars {f=v_f_6} OutVars{f=v_f_5} AuxVars[] AssignedVars[f]" "[116] thread3FINAL-->thread3EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[144] L17-->L63: Formula: (and (= v_thread4Thread1of1ForFork4_thidvar2_2 4) (= v_thread4Thread1of1ForFork4_thidvar0_2 4) (= v_thread4Thread1of1ForFork4_thidvar1_2 4) (= v_thread4Thread1of1ForFork4_thidvar3_2 4)) InVars {} OutVars{thread4Thread1of1ForFork4_thidvar0=v_thread4Thread1of1ForFork4_thidvar0_2, thread4Thread1of1ForFork4_thidvar1=v_thread4Thread1of1ForFork4_thidvar1_2, thread4Thread1of1ForFork4_thidvar2=v_thread4Thread1of1ForFork4_thidvar2_2, thread4Thread1of1ForFork4_thidvar3=v_thread4Thread1of1ForFork4_thidvar3_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork4_thidvar0, thread4Thread1of1ForFork4_thidvar1, thread4Thread1of1ForFork4_thidvar2, thread4Thread1of1ForFork4_thidvar3]" "[118] L63-->L68: Formula: (<= v_z1_6 v_x3_4) InVars {x3=v_x3_4, z1=v_z1_6} OutVars{x3=v_x3_4, z1=v_z1_6} AuxVars[] AssignedVars[]" "[120] L68-->thread4FINAL: Formula: (= (+ v_f_9 1) v_f_8) InVars {f=v_f_9} OutVars{f=v_f_8} AuxVars[] AssignedVars[f]" "[122] thread4FINAL-->thread4EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[132] L18-->$Ultimate##0: Formula: (and (= 5 v_thread5Thread1of1ForFork0_thidvar4_2) (= 5 v_thread5Thread1of1ForFork0_thidvar3_2) (= 5 v_thread5Thread1of1ForFork0_thidvar2_2) (= 5 v_thread5Thread1of1ForFork0_thidvar1_2) (= 5 v_thread5Thread1of1ForFork0_thidvar0_2)) InVars {} OutVars{thread5Thread1of1ForFork0_thidvar4=v_thread5Thread1of1ForFork0_thidvar4_2, thread5Thread1of1ForFork0_thidvar3=v_thread5Thread1of1ForFork0_thidvar3_2, thread5Thread1of1ForFork0_thidvar2=v_thread5Thread1of1ForFork0_thidvar2_2, thread5Thread1of1ForFork0_thidvar1=v_thread5Thread1of1ForFork0_thidvar1_2, thread5Thread1of1ForFork0_thidvar0=v_thread5Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread5Thread1of1ForFork0_thidvar4, thread5Thread1of1ForFork0_thidvar3, thread5Thread1of1ForFork0_thidvar2, thread5Thread1of1ForFork0_thidvar1, thread5Thread1of1ForFork0_thidvar0]" "[124] $Ultimate##0-->L75-1: Formula: (< 3 v_f_10) InVars {f=v_f_10} OutVars{f=v_f_10} AuxVars[] AssignedVars[]" [2025-04-26 16:59:09,110 INFO L754 eck$LassoCheckResult]: Loop: "[126] L75-1-->L77: Formula: (< v_y2_1 v_z2_3) InVars {z2=v_z2_3, y2=v_y2_1} OutVars{z2=v_z2_3, y2=v_y2_1} AuxVars[] AssignedVars[]" "[128] L77-->L78: Formula: (= v_y2_2 (+ v_y2_3 1)) InVars {y2=v_y2_3} OutVars{y2=v_y2_2} AuxVars[] AssignedVars[y2]" "[129] L78-->L75-1: Formula: (= (+ v_c_9 1) v_c_10) InVars {c=v_c_10} OutVars{c=v_c_9} AuxVars[] AssignedVars[c]" [2025-04-26 16:59:09,111 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash -298788032, now seen corresponding path program 1 times [2025-04-26 16:59:09,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:09,111 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404285189] [2025-04-26 16:59:09,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:09,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:09,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-26 16:59:09,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-26 16:59:09,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,130 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:09,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-26 16:59:09,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-26 16:59:09,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:09,155 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash 154974, now seen corresponding path program 1 times [2025-04-26 16:59:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:09,155 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609922161] [2025-04-26 16:59:09,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:09,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:09,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:09,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,163 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:09,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:09,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:09,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:09,170 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2021898817, now seen corresponding path program 1 times [2025-04-26 16:59:09,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:59:09,170 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282105510] [2025-04-26 16:59:09,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:59:09,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:59:09,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-26 16:59:09,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-26 16:59:09,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,182 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:59:09,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-26 16:59:09,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-26 16:59:09,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:59:09,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:59:09,232 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:09,232 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:09,233 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:09,233 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:09,233 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:59:09,233 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:09,233 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:09,233 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:09,233 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:59:09,233 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:09,233 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:09,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:09,240 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:09,265 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:09,265 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:59:09,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:09,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:09,268 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:09,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-04-26 16:59:09,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:09,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:09,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 16:59:09,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:09,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:09,309 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:09,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-04-26 16:59:09,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:09,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:09,359 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:59:09,360 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {c=0} Honda state: {c=0} Generalized eigenvectors: [{c=0}, {c=7}, {c=-8}] Lambdas: [0, 1, 1] Nus: [0, 0] [2025-04-26 16:59:09,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-04-26 16:59:09,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:09,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:09,378 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:09,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-04-26 16:59:09,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:59:09,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:09,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-04-26 16:59:09,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:09,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:09,418 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:09,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-04-26 16:59:09,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:59:09,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:59:09,509 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:59:09,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-04-26 16:59:09,514 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:59:09,514 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:59:09,514 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:59:09,514 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:59:09,514 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:59:09,514 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:09,514 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:59:09,514 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:59:09,514 INFO L132 ssoRankerPreferences]: Filename of dumped script: pc5v.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:59:09,514 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:59:09,514 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:59:09,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:09,522 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:59:09,600 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:59:09,600 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:59:09,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:09,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:09,604 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:09,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-04-26 16:59:09,611 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 16:59:09,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:09,621 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:09,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:09,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:09,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:09,622 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:09,622 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:09,628 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:59:09,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:09,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:09,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:09,637 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:09,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-04-26 16:59:09,643 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 16:59:09,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:59:09,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:59:09,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:59:09,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:59:09,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:59:09,665 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:59:09,665 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:59:09,667 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:59:09,671 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:59:09,671 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:59:09,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:59:09,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:59:09,678 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:59:09,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-04-26 16:59:09,683 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:59:09,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-04-26 16:59:09,687 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:59:09,687 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:59:09,687 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(y2, z2) = -1*y2 + 1*z2 Supporting invariants [] [2025-04-26 16:59:09,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-04-26 16:59:09,695 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:59:09,711 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:59:09,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-26 16:59:09,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-26 16:59:09,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:09,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:59:09,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:09,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:59:09,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:59:09,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:59:09,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:59:09,759 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:59:09,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:59:09,786 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 16:59:09,786 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-04-26 16:59:09,786 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31152 states and 68450 transitions. cyclomatic complexity: 38588 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (in total 22), 4 states have internal predecessors, (22), 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 16:59:10,147 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31152 states and 68450 transitions. cyclomatic complexity: 38588. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (in total 22), 4 states have internal predecessors, (22), 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 59560 states and 127793 transitions. Complement of second has 6 states. [2025-04-26 16:59:10,148 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 16:59:10,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (in total 22), 4 states have internal predecessors, (22), 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 16:59:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-04-26 16:59:10,149 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 118 transitions. Stem has 19 letters. Loop has 3 letters. [2025-04-26 16:59:10,149 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:10,149 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 118 transitions. Stem has 22 letters. Loop has 3 letters. [2025-04-26 16:59:10,151 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:10,151 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 118 transitions. Stem has 19 letters. Loop has 6 letters. [2025-04-26 16:59:10,151 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:59:10,151 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59560 states and 127793 transitions. [2025-04-26 16:59:10,528 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:59:10,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59560 states to 0 states and 0 transitions. [2025-04-26 16:59:10,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:59:10,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:59:10,528 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:59:10,528 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:59:10,528 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:59:10,528 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:59:10,529 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:59:10,529 INFO L340 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-04-26 16:59:10,529 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:59:10,529 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:59:10,529 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:59:10,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-26 16:59:10,540 INFO L201 PluginConnector]: Adding new model pc5v.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:59:10 BoogieIcfgContainer [2025-04-26 16:59:10,540 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:59:10,541 INFO L158 Benchmark]: Toolchain (without parser) took 12466.63ms. Allocated memory was 163.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 89.9MB in the beginning and 551.2MB in the end (delta: -461.2MB). Peak memory consumption was 569.6MB. Max. memory is 8.0GB. [2025-04-26 16:59:10,541 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.79ms. Allocated memory is still 163.6MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:59:10,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.21ms. Allocated memory is still 163.6MB. Free memory was 89.9MB in the beginning and 88.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:59:10,541 INFO L158 Benchmark]: Boogie Preprocessor took 27.00ms. Allocated memory is still 163.6MB. Free memory was 88.1MB in the beginning and 87.1MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:59:10,542 INFO L158 Benchmark]: RCFGBuilder took 206.17ms. Allocated memory is still 163.6MB. Free memory was 86.9MB in the beginning and 76.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:59:10,542 INFO L158 Benchmark]: BuchiAutomizer took 12196.43ms. Allocated memory was 163.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 76.6MB in the beginning and 551.2MB in the end (delta: -474.5MB). Peak memory consumption was 557.0MB. Max. memory is 8.0GB. [2025-04-26 16:59:10,543 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.79ms. Allocated memory is still 163.6MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.21ms. Allocated memory is still 163.6MB. Free memory was 89.9MB in the beginning and 88.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 27.00ms. Allocated memory is still 163.6MB. Free memory was 88.1MB in the beginning and 87.1MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 206.17ms. Allocated memory is still 163.6MB. Free memory was 86.9MB in the beginning and 76.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 12196.43ms. Allocated memory was 163.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 76.6MB in the beginning and 551.2MB in the end (delta: -474.5MB). Peak memory consumption was 557.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.1s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 2.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 3422 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 2.7s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 394 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 389 mSDsluCounter, 628 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 340 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 250 IncrementalHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 288 mSDtfsCounter, 250 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 47ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 1.6s InitialAbstraction: Time to compute Ample Reduction [ms]: 1627, Number of transitions in reduction automaton: 23601, Number of states in reduction automaton: 10884, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (0 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z1 and consists of 4 locations. One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + z1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + z2 and consists of 4 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:59:10,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...