/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:55:30,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:55:30,338 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 16:55:30,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:55:30,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:55:30,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 16:55:30,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 16:55:30,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:55:30,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:55:30,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:55:30,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:55:30,373 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 16:55:30,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:55:30,373 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:55:30,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:55:30,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 16:55:30,374 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 16:55:30,375 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:55:30,375 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:55:30,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:55:30,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:55:30,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:55:30,618 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:55:30,618 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:55:30,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl [2025-04-26 16:55:30,619 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl' [2025-04-26 16:55:30,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:55:30,635 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:55:30,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:55:30,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:55:30,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:55:30,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,670 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:55:30,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:55:30,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:55:30,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:55:30,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:55:30,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,680 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,683 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:55:30,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:55:30,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:55:30,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:55:30,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/1) ... [2025-04-26 16:55:30,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 16:55:30,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:30,723 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 16:55:30,730 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 16:55:30,747 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:55:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:55:30,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:55:30,748 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:55:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:55:30,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:55:30,748 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:55:30,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:55:30,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:55:30,749 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 16:55:30,789 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:55:30,790 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:55:30,876 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:55:30,876 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:55:30,890 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:55:30,890 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:55:30,890 INFO L201 PluginConnector]: Adding new model dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:55:30 BoogieIcfgContainer [2025-04-26 16:55:30,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:55:30,892 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:55:30,892 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:55:30,896 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:55:30,896 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:55:30,896 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:55:30" (1/2) ... [2025-04-26 16:55:30,897 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12fb214f and model type dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:55:30, skipping insertion in model container [2025-04-26 16:55:30,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:55:30,897 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:55:30" (2/2) ... [2025-04-26 16:55:30,898 INFO L376 chiAutomizerObserver]: Analyzing ICFG dec-subseq.wvr.bpl [2025-04-26 16:55:30,941 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:55:30,971 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 16:55:30,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 16:55:30,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:30,974 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 16:55:30,975 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 16:55:31,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 74 flow [2025-04-26 16:55:31,042 INFO L116 PetriNetUnfolderBase]: 3/26 cut-off events. [2025-04-26 16:55:31,044 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:55:31,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 3/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2025-04-26 16:55:31,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 74 flow [2025-04-26 16:55:31,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 26 transitions, 64 flow [2025-04-26 16:55:31,051 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 30 places, 26 transitions, 64 flow [2025-04-26 16:55:31,059 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 16:55:31,130 WARN L140 AmpleReduction]: Number of pruned transitions: 29 [2025-04-26 16:55:31,130 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 16:55:31,130 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 3 [2025-04-26 16:55:31,130 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:29 [2025-04-26 16:55:31,130 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:26 [2025-04-26 16:55:31,131 WARN L145 AmpleReduction]: Times succ was already a loop node:8 [2025-04-26 16:55:31,131 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:6 [2025-04-26 16:55:31,131 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 16:55:31,133 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 59 states, 57 states have (on average 1.4385964912280702) internal successors, (in total 82), 58 states have internal predecessors, (82), 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 16:55:31,141 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:55:31,141 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:55:31,141 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:55:31,141 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:55:31,141 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:55:31,141 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:55:31,141 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:55:31,141 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:55:31,143 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 59 states, 57 states have (on average 1.4385964912280702) internal successors, (in total 82), 58 states have internal predecessors, (82), 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 16:55:31,153 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 41 [2025-04-26 16:55:31,153 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:55:31,153 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:55:31,156 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:55:31,156 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:55:31,156 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:55:31,156 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 59 states, 57 states have (on average 1.4385964912280702) internal successors, (in total 82), 58 states have internal predecessors, (82), 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 16:55:31,158 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 41 [2025-04-26 16:55:31,158 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:55:31,158 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:55:31,158 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:55:31,158 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 16:55:31,162 INFO L752 eck$LassoCheckResult]: Stem: "[63] $Ultimate##0-->L54: Formula: (= v_end_7 v_start_7) InVars {end=v_end_7, start=v_start_7} OutVars{end=v_end_7, start=v_start_7} AuxVars[] AssignedVars[]" "[42] L54-->L55: Formula: (and (= v_v_old_3 v_last_4) (= (select v_A_5 0) v_v_old_3)) InVars {A=v_A_5, last=v_last_4, v_old=v_v_old_3} OutVars{A=v_A_5, last=v_last_4, v_old=v_v_old_3} AuxVars[] AssignedVars[]" "[55] L55-->L56: Formula: (= v_i_11 0) InVars {i=v_i_11} OutVars{i=v_i_11} AuxVars[] AssignedVars[]" "[46] L56-->L57: Formula: v_ok_4 InVars {ok=v_ok_4} OutVars{ok=v_ok_4} AuxVars[] AssignedVars[]" "[87] L57-->L23: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-04-26 16:55:31,162 INFO L754 eck$LassoCheckResult]: Loop: "[69] L23-->L24: Formula: (< v_i_1 v_N_1) InVars {i=v_i_1, N=v_N_1} OutVars{i=v_i_1, N=v_N_1} AuxVars[] AssignedVars[]" "[72] L24-->L24-2: Formula: (< v_last_3 (select v_A_4 v_i_5)) InVars {A=v_A_4, last=v_last_3, i=v_i_5} OutVars{A=v_A_4, last=v_last_3, i=v_i_5} AuxVars[] AssignedVars[]" "[74] L24-2-->L23: Formula: (= v_i_6 (+ v_i_7 1)) InVars {i=v_i_7} OutVars{i=v_i_6} AuxVars[] AssignedVars[i]" [2025-04-26 16:55:31,165 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash 88116564, now seen corresponding path program 1 times [2025-04-26 16:55:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:31,171 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742622539] [2025-04-26 16:55:31,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:31,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:31,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:55:31,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:55:31,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,216 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:31,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:55:31,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:55:31,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:31,234 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash 98406, now seen corresponding path program 1 times [2025-04-26 16:55:31,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:31,234 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767076739] [2025-04-26 16:55:31,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:31,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:31,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:55:31,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:55:31,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,246 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:31,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:55:31,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:55:31,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:31,275 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash 855608883, now seen corresponding path program 1 times [2025-04-26 16:55:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:31,276 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319647175] [2025-04-26 16:55:31,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:31,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:31,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:55:31,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:55:31,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:31,427 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 16:55:31,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:55:31,430 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319647175] [2025-04-26 16:55:31,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319647175] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:55:31,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:55:31,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-26 16:55:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30720630] [2025-04-26 16:55:31,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:55:31,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:55:31,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-26 16:55:31,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-26 16:55:31,515 INFO L87 Difference]: Start difference. First operand has 59 states, 57 states have (on average 1.4385964912280702) internal successors, (in total 82), 58 states have internal predecessors, (82), 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 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:55:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:55:31,595 INFO L93 Difference]: Finished difference Result 150 states and 211 transitions. [2025-04-26 16:55:31,596 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 211 transitions. [2025-04-26 16:55:31,600 INFO L131 ngComponentsAnalysis]: Automaton has 19 accepting balls. 97 [2025-04-26 16:55:31,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 126 states and 178 transitions. [2025-04-26 16:55:31,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2025-04-26 16:55:31,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2025-04-26 16:55:31,608 INFO L74 IsDeterministic]: Start isDeterministic. Operand 126 states and 178 transitions. [2025-04-26 16:55:31,613 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:55:31,613 INFO L218 hiAutomatonCegarLoop]: Abstraction has 126 states and 178 transitions. [2025-04-26 16:55:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 178 transitions. [2025-04-26 16:55:31,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 50. [2025-04-26 16:55:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 50 states have (on average 1.4) internal successors, (in total 70), 49 states have internal predecessors, (70), 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 16:55:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2025-04-26 16:55:31,635 INFO L240 hiAutomatonCegarLoop]: Abstraction has 50 states and 70 transitions. [2025-04-26 16:55:31,637 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-26 16:55:31,640 INFO L438 stractBuchiCegarLoop]: Abstraction has 50 states and 70 transitions. [2025-04-26 16:55:31,640 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:55:31,642 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 70 transitions. [2025-04-26 16:55:31,644 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 41 [2025-04-26 16:55:31,644 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:55:31,644 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:55:31,645 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:55:31,645 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2025-04-26 16:55:31,645 INFO L752 eck$LassoCheckResult]: Stem: "[63] $Ultimate##0-->L54: Formula: (= v_end_7 v_start_7) InVars {end=v_end_7, start=v_start_7} OutVars{end=v_end_7, start=v_start_7} AuxVars[] AssignedVars[]" "[42] L54-->L55: Formula: (and (= v_v_old_3 v_last_4) (= (select v_A_5 0) v_v_old_3)) InVars {A=v_A_5, last=v_last_4, v_old=v_v_old_3} OutVars{A=v_A_5, last=v_last_4, v_old=v_v_old_3} AuxVars[] AssignedVars[]" "[55] L55-->L56: Formula: (= v_i_11 0) InVars {i=v_i_11} OutVars{i=v_i_11} AuxVars[] AssignedVars[]" "[46] L56-->L57: Formula: v_ok_4 InVars {ok=v_ok_4} OutVars{ok=v_ok_4} AuxVars[] AssignedVars[]" "[87] L57-->L23: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[69] L23-->L24: Formula: (< v_i_1 v_N_1) InVars {i=v_i_1, N=v_N_1} OutVars{i=v_i_1, N=v_N_1} AuxVars[] AssignedVars[]" "[71] L24-->L25: Formula: (<= (select v_A_1 v_i_2) v_last_1) InVars {A=v_A_1, last=v_last_1, i=v_i_2} OutVars{A=v_A_1, last=v_last_1, i=v_i_2} AuxVars[] AssignedVars[]" [2025-04-26 16:55:31,646 INFO L754 eck$LassoCheckResult]: Loop: "[73] L25-->L25-1: Formula: (and (= (select v_A_6 v_i_12) (select v_queue_3 v_end_9)) (= (+ v_end_9 1) v_end_8)) InVars {A=v_A_6, i=v_i_12, end=v_end_9, queue=v_queue_3} OutVars{A=v_A_6, i=v_i_12, end=v_end_8, queue=v_queue_3} AuxVars[] AssignedVars[end]" "[75] L25-1-->L24-2: Formula: (= (select v_A_3 v_i_4) v_last_2) InVars {A=v_A_3, i=v_i_4} OutVars{A=v_A_3, last=v_last_2, i=v_i_4} AuxVars[] AssignedVars[last]" "[74] L24-2-->L23: Formula: (= v_i_6 (+ v_i_7 1)) InVars {i=v_i_7} OutVars{i=v_i_6} AuxVars[] AssignedVars[i]" "[69] L23-->L24: Formula: (< v_i_1 v_N_1) InVars {i=v_i_1, N=v_N_1} OutVars{i=v_i_1, N=v_N_1} AuxVars[] AssignedVars[]" "[71] L24-->L25: Formula: (<= (select v_A_1 v_i_2) v_last_1) InVars {A=v_A_1, last=v_last_1, i=v_i_2} OutVars{A=v_A_1, last=v_last_1, i=v_i_2} AuxVars[] AssignedVars[]" [2025-04-26 16:55:31,646 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1219325706, now seen corresponding path program 1 times [2025-04-26 16:55:31,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:31,646 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708231121] [2025-04-26 16:55:31,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:31,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:31,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:55:31,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:55:31,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,654 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:31,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:55:31,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:55:31,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:31,662 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash 98353833, now seen corresponding path program 1 times [2025-04-26 16:55:31,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:31,663 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864183219] [2025-04-26 16:55:31,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:31,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:55:31,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:55:31,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,671 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:31,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:55:31,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:55:31,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,676 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:31,676 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:31,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1840743124, now seen corresponding path program 1 times [2025-04-26 16:55:31,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:31,676 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853816222] [2025-04-26 16:55:31,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:31,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:31,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-26 16:55:31,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-26 16:55:31,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,683 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:31,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-26 16:55:31,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-26 16:55:31,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:31,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:31,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:31,804 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:55:31,804 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:55:31,804 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:55:31,804 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:55:31,805 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:55:31,805 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:31,805 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:55:31,805 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:55:31,805 INFO L132 ssoRankerPreferences]: Filename of dumped script: dec-subseq.wvr.bpl_petrified1_Iteration2_Lasso [2025-04-26 16:55:31,805 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:55:31,805 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:55:31,813 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:31,820 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:31,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:31,936 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:55:31,939 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:55:31,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:31,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:31,944 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 16:55:31,945 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 16:55:31,945 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 16:55:31,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:31,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:31,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:31,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:31,964 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:31,965 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:31,972 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:31,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:55:31,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:31,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:31,981 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 16:55:31,983 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 16:55:31,984 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 16:55:31,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:31,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:31,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:31,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:31,999 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:31,999 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:32,003 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:32,009 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 16:55:32,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:32,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:32,012 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 16:55:32,014 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 16:55:32,015 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 16:55:32,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:32,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:32,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:32,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:32,032 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:32,032 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:32,039 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:32,045 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 16:55:32,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:32,047 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 16:55:32,049 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 16:55:32,050 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 16:55:32,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:32,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:32,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:32,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:32,062 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:32,063 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:32,068 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:55:32,077 INFO L436 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-04-26 16:55:32,077 INFO L437 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 5 variables to zero. [2025-04-26 16:55:32,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:32,081 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 16:55:32,082 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 16:55:32,083 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:55:32,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:55:32,100 INFO L439 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2025-04-26 16:55:32,100 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:55:32,100 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(N, i) = 1*N - 1*i Supporting invariants [] [2025-04-26 16:55:32,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:55:32,107 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:55:32,121 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:32,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:55:32,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:55:32,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:32,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:55:32,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:32,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:55:32,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:55:32,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:32,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:55:32,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:32,192 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 16:55:32,195 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 16:55:32,196 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 50 states and 70 transitions. cyclomatic complexity: 27 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (in total 12), 5 states have internal predecessors, (12), 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 16:55:32,268 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 50 states and 70 transitions. cyclomatic complexity: 27. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (in total 12), 5 states have internal predecessors, (12), 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 111 states and 163 transitions. Complement of second has 6 states. [2025-04-26 16:55:32,270 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 16:55:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (in total 12), 5 states have internal predecessors, (12), 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 16:55:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2025-04-26 16:55:32,274 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 7 letters. Loop has 5 letters. [2025-04-26 16:55:32,275 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:32,275 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 12 letters. Loop has 5 letters. [2025-04-26 16:55:32,275 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:32,275 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 7 letters. Loop has 10 letters. [2025-04-26 16:55:32,275 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:32,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 163 transitions. [2025-04-26 16:55:32,279 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 28 [2025-04-26 16:55:32,280 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 73 states and 106 transitions. [2025-04-26 16:55:32,280 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2025-04-26 16:55:32,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2025-04-26 16:55:32,280 INFO L74 IsDeterministic]: Start isDeterministic. Operand 73 states and 106 transitions. [2025-04-26 16:55:32,280 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:55:32,280 INFO L218 hiAutomatonCegarLoop]: Abstraction has 73 states and 106 transitions. [2025-04-26 16:55:32,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states and 106 transitions. [2025-04-26 16:55:32,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2025-04-26 16:55:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 57 states have (on average 1.4736842105263157) internal successors, (in total 84), 56 states have internal predecessors, (84), 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 16:55:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2025-04-26 16:55:32,287 INFO L240 hiAutomatonCegarLoop]: Abstraction has 57 states and 84 transitions. [2025-04-26 16:55:32,287 INFO L438 stractBuchiCegarLoop]: Abstraction has 57 states and 84 transitions. [2025-04-26 16:55:32,287 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:55:32,287 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 84 transitions. [2025-04-26 16:55:32,291 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2025-04-26 16:55:32,291 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:55:32,291 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:55:32,292 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:55:32,292 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:55:32,292 INFO L752 eck$LassoCheckResult]: Stem: "[63] $Ultimate##0-->L54: Formula: (= v_end_7 v_start_7) InVars {end=v_end_7, start=v_start_7} OutVars{end=v_end_7, start=v_start_7} AuxVars[] AssignedVars[]" "[42] L54-->L55: Formula: (and (= v_v_old_3 v_last_4) (= (select v_A_5 0) v_v_old_3)) InVars {A=v_A_5, last=v_last_4, v_old=v_v_old_3} OutVars{A=v_A_5, last=v_last_4, v_old=v_v_old_3} AuxVars[] AssignedVars[]" "[55] L55-->L56: Formula: (= v_i_11 0) InVars {i=v_i_11} OutVars{i=v_i_11} AuxVars[] AssignedVars[]" "[46] L56-->L57: Formula: v_ok_4 InVars {ok=v_ok_4} OutVars{ok=v_ok_4} AuxVars[] AssignedVars[]" "[87] L57-->L23: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[68] L23-->thread1FINAL: Formula: (<= v_N_2 v_i_8) InVars {i=v_i_8, N=v_N_2} OutVars{i=v_i_8, N=v_N_2} AuxVars[] AssignedVars[]" "[70] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[84] L57-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-04-26 16:55:32,292 INFO L754 eck$LassoCheckResult]: Loop: "[77] L39-->L40: Formula: (or (< v_start_1 v_end_4) (< v_i_9 v_N_3)) InVars {i=v_i_9, end=v_end_4, start=v_start_1, N=v_N_3} OutVars{i=v_i_9, end=v_end_4, start=v_start_1, N=v_N_3} AuxVars[] AssignedVars[]" "[79] L40-->L40-1: Formula: (and (< v_start_13 v_end_12) (= v_start_12 (+ v_start_13 1)) (= (select v_queue_7 v_start_13) v_new_6)) InVars {queue=v_queue_7, end=v_end_12, start=v_start_13} OutVars{end=v_end_12, start=v_start_12, new=v_new_6, queue=v_queue_7} AuxVars[] AssignedVars[start, new]" "[80] L40-1-->L46: Formula: (or (and (or (not v_ok_2) (< v_v_old_1 v_new_2)) (not v_ok_1)) (and (<= v_new_2 v_v_old_1) v_ok_2 v_ok_1)) InVars {ok=v_ok_2, v_old=v_v_old_1, new=v_new_2} OutVars{ok=v_ok_1, v_old=v_v_old_1, new=v_new_2} AuxVars[] AssignedVars[ok]" "[81] L46-->L39: Formula: (= v_v_old_2 v_new_3) InVars {new=v_new_3} OutVars{v_old=v_v_old_2, new=v_new_3} AuxVars[] AssignedVars[v_old]" [2025-04-26 16:55:32,292 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:32,293 INFO L85 PathProgramCache]: Analyzing trace with hash 855607870, now seen corresponding path program 1 times [2025-04-26 16:55:32,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:32,293 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424414103] [2025-04-26 16:55:32,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:32,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:32,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:55:32,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:55:32,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,299 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:32,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:55:32,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:55:32,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:32,304 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:32,304 INFO L85 PathProgramCache]: Analyzing trace with hash 3295908, now seen corresponding path program 1 times [2025-04-26 16:55:32,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:32,305 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392775159] [2025-04-26 16:55:32,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:32,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:32,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:32,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:32,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,308 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:32,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:32,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:32,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:32,313 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash 934833761, now seen corresponding path program 1 times [2025-04-26 16:55:32,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:32,313 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658423098] [2025-04-26 16:55:32,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:32,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:32,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-26 16:55:32,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-26 16:55:32,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:32,375 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 16:55:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:55:32,375 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658423098] [2025-04-26 16:55:32,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658423098] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:55:32,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:55:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 16:55:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615468659] [2025-04-26 16:55:32,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:55:32,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:55:32,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-26 16:55:32,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-26 16:55:32,461 INFO L87 Difference]: Start difference. First operand 57 states and 84 transitions. cyclomatic complexity: 34 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (in total 12), 3 states have internal predecessors, (12), 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 16:55:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:55:32,477 INFO L93 Difference]: Finished difference Result 64 states and 92 transitions. [2025-04-26 16:55:32,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 92 transitions. [2025-04-26 16:55:32,478 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2025-04-26 16:55:32,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 61 states and 89 transitions. [2025-04-26 16:55:32,478 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2025-04-26 16:55:32,479 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2025-04-26 16:55:32,479 INFO L74 IsDeterministic]: Start isDeterministic. Operand 61 states and 89 transitions. [2025-04-26 16:55:32,479 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:55:32,479 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 89 transitions. [2025-04-26 16:55:32,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 89 transitions. [2025-04-26 16:55:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-04-26 16:55:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.459016393442623) internal successors, (in total 89), 60 states have internal predecessors, (89), 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 16:55:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 89 transitions. [2025-04-26 16:55:32,481 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 89 transitions. [2025-04-26 16:55:32,481 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-26 16:55:32,482 INFO L438 stractBuchiCegarLoop]: Abstraction has 61 states and 89 transitions. [2025-04-26 16:55:32,482 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:55:32,482 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 89 transitions. [2025-04-26 16:55:32,483 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2025-04-26 16:55:32,483 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:55:32,483 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:55:32,483 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:55:32,483 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:55:32,483 INFO L752 eck$LassoCheckResult]: Stem: "[63] $Ultimate##0-->L54: Formula: (= v_end_7 v_start_7) InVars {end=v_end_7, start=v_start_7} OutVars{end=v_end_7, start=v_start_7} AuxVars[] AssignedVars[]" "[42] L54-->L55: Formula: (and (= v_v_old_3 v_last_4) (= (select v_A_5 0) v_v_old_3)) InVars {A=v_A_5, last=v_last_4, v_old=v_v_old_3} OutVars{A=v_A_5, last=v_last_4, v_old=v_v_old_3} AuxVars[] AssignedVars[]" "[55] L55-->L56: Formula: (= v_i_11 0) InVars {i=v_i_11} OutVars{i=v_i_11} AuxVars[] AssignedVars[]" "[46] L56-->L57: Formula: v_ok_4 InVars {ok=v_ok_4} OutVars{ok=v_ok_4} AuxVars[] AssignedVars[]" "[87] L57-->L23: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[69] L23-->L24: Formula: (< v_i_1 v_N_1) InVars {i=v_i_1, N=v_N_1} OutVars{i=v_i_1, N=v_N_1} AuxVars[] AssignedVars[]" "[71] L24-->L25: Formula: (<= (select v_A_1 v_i_2) v_last_1) InVars {A=v_A_1, last=v_last_1, i=v_i_2} OutVars{A=v_A_1, last=v_last_1, i=v_i_2} AuxVars[] AssignedVars[]" "[84] L57-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[73] L25-->L25-1: Formula: (and (= (select v_A_6 v_i_12) (select v_queue_3 v_end_9)) (= (+ v_end_9 1) v_end_8)) InVars {A=v_A_6, i=v_i_12, end=v_end_9, queue=v_queue_3} OutVars{A=v_A_6, i=v_i_12, end=v_end_8, queue=v_queue_3} AuxVars[] AssignedVars[end]" "[75] L25-1-->L24-2: Formula: (= (select v_A_3 v_i_4) v_last_2) InVars {A=v_A_3, i=v_i_4} OutVars{A=v_A_3, last=v_last_2, i=v_i_4} AuxVars[] AssignedVars[last]" [2025-04-26 16:55:32,483 INFO L754 eck$LassoCheckResult]: Loop: "[77] L39-->L40: Formula: (or (< v_start_1 v_end_4) (< v_i_9 v_N_3)) InVars {i=v_i_9, end=v_end_4, start=v_start_1, N=v_N_3} OutVars{i=v_i_9, end=v_end_4, start=v_start_1, N=v_N_3} AuxVars[] AssignedVars[]" "[79] L40-->L40-1: Formula: (and (< v_start_13 v_end_12) (= v_start_12 (+ v_start_13 1)) (= (select v_queue_7 v_start_13) v_new_6)) InVars {queue=v_queue_7, end=v_end_12, start=v_start_13} OutVars{end=v_end_12, start=v_start_12, new=v_new_6, queue=v_queue_7} AuxVars[] AssignedVars[start, new]" "[80] L40-1-->L46: Formula: (or (and (or (not v_ok_2) (< v_v_old_1 v_new_2)) (not v_ok_1)) (and (<= v_new_2 v_v_old_1) v_ok_2 v_ok_1)) InVars {ok=v_ok_2, v_old=v_v_old_1, new=v_new_2} OutVars{ok=v_ok_1, v_old=v_v_old_1, new=v_new_2} AuxVars[] AssignedVars[ok]" "[81] L46-->L39: Formula: (= v_v_old_2 v_new_3) InVars {new=v_new_3} OutVars{v_old=v_v_old_2, new=v_new_3} AuxVars[] AssignedVars[v_old]" [2025-04-26 16:55:32,484 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1901365184, now seen corresponding path program 1 times [2025-04-26 16:55:32,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:32,484 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293964051] [2025-04-26 16:55:32,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:32,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:32,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:55:32,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:55:32,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,488 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:32,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:55:32,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:55:32,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:32,493 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash 3295908, now seen corresponding path program 2 times [2025-04-26 16:55:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:32,493 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94764273] [2025-04-26 16:55:32,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-26 16:55:32,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:32,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:32,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:32,500 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-26 16:55:32,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,500 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:32,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:32,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:32,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:32,508 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash 544135907, now seen corresponding path program 1 times [2025-04-26 16:55:32,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:32,508 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715635509] [2025-04-26 16:55:32,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:32,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 16:55:32,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 16:55:32,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,520 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:32,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-26 16:55:32,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-26 16:55:32,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:32,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:32,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:32,744 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:55:32,745 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:55:32,745 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:55:32,745 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:55:32,745 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:55:32,745 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:32,745 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:55:32,745 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:55:32,745 INFO L132 ssoRankerPreferences]: Filename of dumped script: dec-subseq.wvr.bpl_petrified1_Iteration4_Lasso [2025-04-26 16:55:32,745 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:55:32,745 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:55:32,746 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:32,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:32,751 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:32,803 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:32,812 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:32,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:32,967 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:55:32,967 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:55:32,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:32,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:32,969 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 16:55:32,970 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 16:55:32,970 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 16:55:32,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:32,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:32,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:32,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:32,982 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:32,982 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:32,984 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:32,990 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 16:55:32,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:32,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:32,992 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 16:55:32,993 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 16:55:32,994 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 16:55:33,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:33,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:33,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:33,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:33,005 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:33,005 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:33,008 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:33,013 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 16:55:33,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:33,015 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 16:55:33,016 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 16:55:33,017 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 16:55:33,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:33,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:33,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:33,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:33,030 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:33,030 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:33,034 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:55:33,041 INFO L436 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2025-04-26 16:55:33,041 INFO L437 ModelExtractionUtils]: 3 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2025-04-26 16:55:33,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:33,044 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 16:55:33,045 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 16:55:33,046 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:55:33,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:55:33,065 INFO L439 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2025-04-26 16:55:33,065 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:55:33,065 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(end, start) = 1*end - 1*start Supporting invariants [] [2025-04-26 16:55:33,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:55:33,072 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:55:33,082 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:33,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-26 16:55:33,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-26 16:55:33,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:33,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:55:33,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:33,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:33,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:33,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:33,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:55:33,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:33,142 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 16:55:33,142 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:55:33,142 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 89 transitions. cyclomatic complexity: 35 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (in total 14), 4 states have internal predecessors, (14), 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 16:55:33,164 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 89 transitions. cyclomatic complexity: 35. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (in total 14), 4 states have internal predecessors, (14), 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 163 states and 251 transitions. Complement of second has 5 states. [2025-04-26 16:55:33,165 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:55:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (in total 14), 4 states have internal predecessors, (14), 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 16:55:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2025-04-26 16:55:33,166 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 10 letters. Loop has 4 letters. [2025-04-26 16:55:33,166 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:33,166 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 14 letters. Loop has 4 letters. [2025-04-26 16:55:33,166 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:33,166 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 10 letters. Loop has 8 letters. [2025-04-26 16:55:33,167 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:33,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 163 states and 251 transitions. [2025-04-26 16:55:33,168 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2025-04-26 16:55:33,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 163 states to 106 states and 163 transitions. [2025-04-26 16:55:33,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2025-04-26 16:55:33,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2025-04-26 16:55:33,169 INFO L74 IsDeterministic]: Start isDeterministic. Operand 106 states and 163 transitions. [2025-04-26 16:55:33,169 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:55:33,169 INFO L218 hiAutomatonCegarLoop]: Abstraction has 106 states and 163 transitions. [2025-04-26 16:55:33,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 163 transitions. [2025-04-26 16:55:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2025-04-26 16:55:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (in total 163), 105 states have internal predecessors, (163), 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 16:55:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 163 transitions. [2025-04-26 16:55:33,177 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 163 transitions. [2025-04-26 16:55:33,177 INFO L438 stractBuchiCegarLoop]: Abstraction has 106 states and 163 transitions. [2025-04-26 16:55:33,177 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:55:33,177 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 163 transitions. [2025-04-26 16:55:33,181 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2025-04-26 16:55:33,181 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:55:33,181 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:55:33,182 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:55:33,182 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-04-26 16:55:33,182 INFO L752 eck$LassoCheckResult]: Stem: "[63] $Ultimate##0-->L54: Formula: (= v_end_7 v_start_7) InVars {end=v_end_7, start=v_start_7} OutVars{end=v_end_7, start=v_start_7} AuxVars[] AssignedVars[]" "[42] L54-->L55: Formula: (and (= v_v_old_3 v_last_4) (= (select v_A_5 0) v_v_old_3)) InVars {A=v_A_5, last=v_last_4, v_old=v_v_old_3} OutVars{A=v_A_5, last=v_last_4, v_old=v_v_old_3} AuxVars[] AssignedVars[]" "[55] L55-->L56: Formula: (= v_i_11 0) InVars {i=v_i_11} OutVars{i=v_i_11} AuxVars[] AssignedVars[]" "[46] L56-->L57: Formula: v_ok_4 InVars {ok=v_ok_4} OutVars{ok=v_ok_4} AuxVars[] AssignedVars[]" "[87] L57-->L23: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[69] L23-->L24: Formula: (< v_i_1 v_N_1) InVars {i=v_i_1, N=v_N_1} OutVars{i=v_i_1, N=v_N_1} AuxVars[] AssignedVars[]" "[71] L24-->L25: Formula: (<= (select v_A_1 v_i_2) v_last_1) InVars {A=v_A_1, last=v_last_1, i=v_i_2} OutVars{A=v_A_1, last=v_last_1, i=v_i_2} AuxVars[] AssignedVars[]" "[84] L57-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[73] L25-->L25-1: Formula: (and (= (select v_A_6 v_i_12) (select v_queue_3 v_end_9)) (= (+ v_end_9 1) v_end_8)) InVars {A=v_A_6, i=v_i_12, end=v_end_9, queue=v_queue_3} OutVars{A=v_A_6, i=v_i_12, end=v_end_8, queue=v_queue_3} AuxVars[] AssignedVars[end]" "[75] L25-1-->L24-2: Formula: (= (select v_A_3 v_i_4) v_last_2) InVars {A=v_A_3, i=v_i_4} OutVars{A=v_A_3, last=v_last_2, i=v_i_4} AuxVars[] AssignedVars[last]" "[74] L24-2-->L23: Formula: (= v_i_6 (+ v_i_7 1)) InVars {i=v_i_7} OutVars{i=v_i_6} AuxVars[] AssignedVars[i]" "[69] L23-->L24: Formula: (< v_i_1 v_N_1) InVars {i=v_i_1, N=v_N_1} OutVars{i=v_i_1, N=v_N_1} AuxVars[] AssignedVars[]" "[71] L24-->L25: Formula: (<= (select v_A_1 v_i_2) v_last_1) InVars {A=v_A_1, last=v_last_1, i=v_i_2} OutVars{A=v_A_1, last=v_last_1, i=v_i_2} AuxVars[] AssignedVars[]" "[73] L25-->L25-1: Formula: (and (= (select v_A_6 v_i_12) (select v_queue_3 v_end_9)) (= (+ v_end_9 1) v_end_8)) InVars {A=v_A_6, i=v_i_12, end=v_end_9, queue=v_queue_3} OutVars{A=v_A_6, i=v_i_12, end=v_end_8, queue=v_queue_3} AuxVars[] AssignedVars[end]" "[75] L25-1-->L24-2: Formula: (= (select v_A_3 v_i_4) v_last_2) InVars {A=v_A_3, i=v_i_4} OutVars{A=v_A_3, last=v_last_2, i=v_i_4} AuxVars[] AssignedVars[last]" [2025-04-26 16:55:33,182 INFO L754 eck$LassoCheckResult]: Loop: "[77] L39-->L40: Formula: (or (< v_start_1 v_end_4) (< v_i_9 v_N_3)) InVars {i=v_i_9, end=v_end_4, start=v_start_1, N=v_N_3} OutVars{i=v_i_9, end=v_end_4, start=v_start_1, N=v_N_3} AuxVars[] AssignedVars[]" "[79] L40-->L40-1: Formula: (and (< v_start_13 v_end_12) (= v_start_12 (+ v_start_13 1)) (= (select v_queue_7 v_start_13) v_new_6)) InVars {queue=v_queue_7, end=v_end_12, start=v_start_13} OutVars{end=v_end_12, start=v_start_12, new=v_new_6, queue=v_queue_7} AuxVars[] AssignedVars[start, new]" "[80] L40-1-->L46: Formula: (or (and (or (not v_ok_2) (< v_v_old_1 v_new_2)) (not v_ok_1)) (and (<= v_new_2 v_v_old_1) v_ok_2 v_ok_1)) InVars {ok=v_ok_2, v_old=v_v_old_1, new=v_new_2} OutVars{ok=v_ok_1, v_old=v_v_old_1, new=v_new_2} AuxVars[] AssignedVars[ok]" "[81] L46-->L39: Formula: (= v_v_old_2 v_new_3) InVars {new=v_new_3} OutVars{v_old=v_v_old_2, new=v_new_3} AuxVars[] AssignedVars[v_old]" [2025-04-26 16:55:33,183 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:33,183 INFO L85 PathProgramCache]: Analyzing trace with hash -314733362, now seen corresponding path program 1 times [2025-04-26 16:55:33,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:33,183 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508047863] [2025-04-26 16:55:33,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:33,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:33,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 16:55:33,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 16:55:33,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:33,188 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:33,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 16:55:33,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 16:55:33,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:33,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:33,200 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash 3295908, now seen corresponding path program 3 times [2025-04-26 16:55:33,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:33,200 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118597391] [2025-04-26 16:55:33,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-26 16:55:33,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:33,203 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:33,204 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:33,204 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-26 16:55:33,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:33,204 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:33,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:33,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:33,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:33,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:33,207 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash -955078415, now seen corresponding path program 1 times [2025-04-26 16:55:33,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:55:33,207 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231881232] [2025-04-26 16:55:33,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:55:33,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:55:33,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-26 16:55:33,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-26 16:55:33,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:33,213 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:55:33,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-26 16:55:33,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-26 16:55:33,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:55:33,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:55:33,407 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:55:33,407 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:55:33,407 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:55:33,407 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:55:33,407 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:55:33,407 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,407 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:55:33,407 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:55:33,407 INFO L132 ssoRankerPreferences]: Filename of dumped script: dec-subseq.wvr.bpl_petrified1_Iteration5_Lasso [2025-04-26 16:55:33,407 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:55:33,407 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:55:33,409 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:33,411 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:33,414 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:33,416 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:33,418 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:33,422 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:55:33,656 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:55:33,657 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:55:33,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:33,661 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 16:55:33,664 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 16:55:33,665 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 16:55:33,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:33,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:33,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:33,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:33,676 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:33,676 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:33,679 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:33,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:55:33,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:33,686 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 16:55:33,687 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 16:55:33,689 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 16:55:33,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:33,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:33,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:33,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:33,699 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:33,699 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:33,702 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:33,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-04-26 16:55:33,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:33,709 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 16:55:33,711 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 16:55:33,712 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 16:55:33,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:33,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:33,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:33,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:33,723 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:33,723 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:33,727 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:33,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-04-26 16:55:33,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:33,734 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 16:55:33,736 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 16:55:33,738 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 16:55:33,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:33,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:33,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:33,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:33,753 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:33,754 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:33,758 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:33,764 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 16:55:33,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:33,766 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 16:55:33,768 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 16:55:33,769 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 16:55:33,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:33,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:33,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:33,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:33,783 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:33,783 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:33,786 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:55:33,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:55:33,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:33,793 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 16:55:33,795 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 16:55:33,796 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 16:55:33,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:55:33,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:55:33,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:55:33,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:55:33,807 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-04-26 16:55:33,807 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-04-26 16:55:33,813 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:55:33,822 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:55:33,822 INFO L437 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 5 variables to zero. [2025-04-26 16:55:33,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:55:33,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:55:33,824 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 16:55:33,826 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 16:55:33,827 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:55:33,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-04-26 16:55:33,842 INFO L439 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2025-04-26 16:55:33,842 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:55:33,842 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(start, end) = -1*start + 1*end Supporting invariants [] [2025-04-26 16:55:33,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-04-26 16:55:33,850 INFO L156 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2025-04-26 16:55:33,859 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:33,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 16:55:33,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 16:55:33,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:33,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:55:33,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:33,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:33,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:33,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:33,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:55:33,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:33,906 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 16:55:33,906 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:55:33,906 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 163 transitions. cyclomatic complexity: 71 Second operand has 4 states, 4 states have (on average 4.0) internal successors, (in total 16), 4 states have internal predecessors, (16), 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 16:55:33,921 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 163 transitions. cyclomatic complexity: 71. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (in total 16), 4 states have internal predecessors, (16), 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 146 states and 229 transitions. Complement of second has 5 states. [2025-04-26 16:55:33,922 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:55:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (in total 16), 4 states have internal predecessors, (16), 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 16:55:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2025-04-26 16:55:33,922 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 24 transitions. Stem has 15 letters. Loop has 4 letters. [2025-04-26 16:55:33,923 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:33,923 INFO L699 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-04-26 16:55:33,931 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:33,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 16:55:33,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 16:55:33,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:33,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:55:33,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:33,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:33,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:33,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:33,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:33,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:55:33,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:33,972 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 16:55:33,972 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:55:33,972 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 163 transitions. cyclomatic complexity: 71 Second operand has 4 states, 4 states have (on average 4.0) internal successors, (in total 16), 4 states have internal predecessors, (16), 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 16:55:33,991 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 163 transitions. cyclomatic complexity: 71. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (in total 16), 4 states have internal predecessors, (16), 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 158 states and 249 transitions. Complement of second has 7 states. [2025-04-26 16:55:33,991 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 16:55:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (in total 16), 4 states have internal predecessors, (16), 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 16:55:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2025-04-26 16:55:33,992 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 15 letters. Loop has 4 letters. [2025-04-26 16:55:33,992 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:33,992 INFO L699 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-04-26 16:55:34,001 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:55:34,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-26 16:55:34,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-26 16:55:34,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:34,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:34,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:55:34,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:34,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:55:34,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:55:34,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:55:34,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:55:34,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:55:34,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:55:34,054 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 16:55:34,055 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:55:34,055 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 163 transitions. cyclomatic complexity: 71 Second operand has 4 states, 4 states have (on average 4.0) internal successors, (in total 16), 4 states have internal predecessors, (16), 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 16:55:34,079 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 163 transitions. cyclomatic complexity: 71. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (in total 16), 4 states have internal predecessors, (16), 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 199 states and 319 transitions. Complement of second has 4 states. [2025-04-26 16:55:34,080 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-04-26 16:55:34,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (in total 16), 4 states have internal predecessors, (16), 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 16:55:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2025-04-26 16:55:34,081 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 36 transitions. Stem has 15 letters. Loop has 4 letters. [2025-04-26 16:55:34,081 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:34,081 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 36 transitions. Stem has 19 letters. Loop has 4 letters. [2025-04-26 16:55:34,081 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:34,081 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 3 states and 36 transitions. Stem has 15 letters. Loop has 8 letters. [2025-04-26 16:55:34,081 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:55:34,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 199 states and 319 transitions. [2025-04-26 16:55:34,083 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:55:34,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 199 states to 0 states and 0 transitions. [2025-04-26 16:55:34,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:55:34,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:55:34,083 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:55:34,083 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:55:34,084 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:55:34,084 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:55:34,084 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:55:34,084 INFO L340 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-04-26 16:55:34,084 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:55:34,084 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:55:34,084 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:55:34,095 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 16:55:34,097 INFO L201 PluginConnector]: Adding new model dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:55:34 BoogieIcfgContainer [2025-04-26 16:55:34,097 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:55:34,098 INFO L158 Benchmark]: Toolchain (without parser) took 3462.60ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 81.9MB in the beginning and 64.4MB in the end (delta: 17.5MB). Peak memory consumption was 6.2MB. Max. memory is 8.0GB. [2025-04-26 16:55:34,098 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:55:34,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.71ms. Allocated memory is still 155.2MB. Free memory was 81.9MB in the beginning and 80.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:55:34,099 INFO L158 Benchmark]: Boogie Preprocessor took 19.43ms. Allocated memory is still 155.2MB. Free memory was 80.0MB in the beginning and 79.0MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:55:34,099 INFO L158 Benchmark]: RCFGBuilder took 198.24ms. Allocated memory is still 155.2MB. Free memory was 79.0MB in the beginning and 69.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 16:55:34,099 INFO L158 Benchmark]: BuchiAutomizer took 3204.97ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 69.2MB in the beginning and 64.4MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:55:34,100 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 0.19ms. Allocated memory is still 155.2MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.71ms. Allocated memory is still 155.2MB. Free memory was 81.9MB in the beginning and 80.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 19.43ms. Allocated memory is still 155.2MB. Free memory was 80.0MB in the beginning and 79.0MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 198.24ms. Allocated memory is still 155.2MB. Free memory was 79.0MB in the beginning and 69.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3204.97ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 69.2MB in the beginning and 64.4MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 92 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 191 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 186 mSDsluCounter, 168 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 147 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 106 mSDtfsCounter, 147 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital78 mio100 ax100 hnf100 lsp92 ukn78 mio100 lsp62 div100 bol113 ite100 ukn100 eq171 hnf89 smp100 dnf177 smp74 tf100 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 163, Number of transitions in reduction automaton: 82, Number of states in reduction automaton: 59, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function N + -1 * i and consists of 4 locations. One deterministic module has affine ranking function end + -1 * start and consists of 3 locations. One nondeterministic module has affine ranking function end + -1 * start and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these 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 16:55:34,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...