/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/test/easy1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:41:51,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:41:51,376 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:41:51,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:41:51,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:41:51,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:41:51,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:41:51,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:41:51,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:41:51,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:41:51,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:41:51,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:41:51,407 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:41:51,407 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:41:51,407 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:41:51,407 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:41:51,407 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:41:51,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:41:51,408 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:41:51,409 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:41:51,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:41:51,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:41:51,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:41:51,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:41:51,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:41:51,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:41:51,409 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:41:51,409 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:41:51,409 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:41:51,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:41:51,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:41:51,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:41:51,637 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:41:51,638 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:41:51,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy1.wvr.bpl [2025-04-26 18:41:51,639 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy1.wvr.bpl' [2025-04-26 18:41:51,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:41:51,657 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:41:51,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:41:51,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:41:51,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:41:51,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,689 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:41:51,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:41:51,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:41:51,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:41:51,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:41:51,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,700 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:41:51,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:41:51,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:41:51,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:41:51,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/1) ... [2025-04-26 18:41:51,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:41:51,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:51,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:51,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-26 18:41:51,756 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:41:51,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:41:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:41:51,756 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:41:51,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:41:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:41:51,756 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:41:51,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:41:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:41:51,757 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 18:41:51,792 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:41:51,794 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:41:51,854 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:41:51,854 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:41:51,861 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:41:51,862 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:41:51,863 INFO L201 PluginConnector]: Adding new model easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:41:51 BoogieIcfgContainer [2025-04-26 18:41:51,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:41:51,864 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:41:51,864 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:41:51,867 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:41:51,868 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:41:51,868 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:41:51" (1/2) ... [2025-04-26 18:41:51,869 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a7e5eed and model type easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:41:51, skipping insertion in model container [2025-04-26 18:41:51,869 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:41:51,869 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:41:51" (2/2) ... [2025-04-26 18:41:51,870 INFO L376 chiAutomizerObserver]: Analyzing ICFG easy1.wvr.bpl [2025-04-26 18:41:51,902 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 18:41:51,935 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:41:51,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:41:51,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:51,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:51,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-26 18:41:51,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 21 transitions, 56 flow [2025-04-26 18:41:52,008 INFO L116 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-04-26 18:41:52,013 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 18:41:52,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-04-26 18:41:52,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 21 transitions, 56 flow [2025-04-26 18:41:52,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2025-04-26 18:41:52,019 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 22 places, 17 transitions, 46 flow [2025-04-26 18:41:52,021 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions, 46 flow [2025-04-26 18:41:52,033 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 31 states, 29 states have (on average 1.896551724137931) internal successors, (in total 55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:52,034 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 31 states, 29 states have (on average 1.896551724137931) internal successors, (in total 55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:52,035 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:41:52,075 WARN L140 AmpleReduction]: Number of pruned transitions: 10 [2025-04-26 18:41:52,075 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:41:52,075 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 6 [2025-04-26 18:41:52,076 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:15 [2025-04-26 18:41:52,076 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:9 [2025-04-26 18:41:52,077 WARN L145 AmpleReduction]: Times succ was already a loop node:10 [2025-04-26 18:41:52,077 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:0 [2025-04-26 18:41:52,078 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:41:52,078 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 31 states, 29 states have (on average 1.5517241379310345) internal successors, (in total 45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:52,084 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:41:52,084 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:41:52,084 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:41:52,084 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:41:52,084 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:41:52,085 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:41:52,085 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:41:52,085 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:41:52,087 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 31 states, 29 states have (on average 1.5517241379310345) internal successors, (in total 45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:52,096 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 16 [2025-04-26 18:41:52,097 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:41:52,097 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:41:52,100 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:41:52,100 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:41:52,100 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:41:52,101 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 31 states, 29 states have (on average 1.5517241379310345) internal successors, (in total 45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:52,103 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 16 [2025-04-26 18:41:52,103 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:41:52,103 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:41:52,103 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 18:41:52,103 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:41:52,107 INFO L752 eck$LassoCheckResult]: Stem: "[32] $Ultimate##0-->L32: Formula: (and (= v_x2_6 v_x1_6) (<= 0 v_x1_6)) InVars {x1=v_x1_6, x2=v_x2_6} OutVars{x1=v_x1_6, x2=v_x2_6} AuxVars[] AssignedVars[]" "[53] L32-->L15: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" [2025-04-26 18:41:52,108 INFO L754 eck$LassoCheckResult]: Loop: "[41] L15-->L16: Formula: (< v_x1_1 10000) InVars {x1=v_x1_1} OutVars{x1=v_x1_1} AuxVars[] AssignedVars[]" "[43] L16-->L15: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 18:41:52,111 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:41:52,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2006, now seen corresponding path program 1 times [2025-04-26 18:41:52,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:41:52,121 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107270265] [2025-04-26 18:41:52,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:41:52,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:41:52,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:41:52,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:41:52,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,166 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:41:52,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:41:52,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:41:52,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:41:52,184 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:41:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2275, now seen corresponding path program 1 times [2025-04-26 18:41:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:41:52,184 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563167629] [2025-04-26 18:41:52,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:41:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:41:52,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:41:52,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:41:52,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,193 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:41:52,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:41:52,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:41:52,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:41:52,198 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:41:52,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1929080, now seen corresponding path program 1 times [2025-04-26 18:41:52,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:41:52,198 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424974685] [2025-04-26 18:41:52,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:41:52,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:41:52,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:41:52,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:41:52,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,209 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:41:52,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 18:41:52,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 18:41:52,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:41:52,266 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:41:52,267 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:41:52,267 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:41:52,267 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:41:52,267 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:41:52,267 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,267 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:41:52,267 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:41:52,267 INFO L132 ssoRankerPreferences]: Filename of dumped script: easy1.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 18:41:52,267 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:41:52,267 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:41:52,280 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:41:52,327 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:41:52,329 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:41:52,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:52,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:52,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 18:41:52,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:41:52,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:41:52,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 18:41:52,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:52,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:52,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 18:41:52,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:41:52,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:41:52,397 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:41:52,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-04-26 18:41:52,402 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:41:52,402 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:41:52,402 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:41:52,402 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:41:52,402 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:41:52,402 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,402 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:41:52,402 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:41:52,402 INFO L132 ssoRankerPreferences]: Filename of dumped script: easy1.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 18:41:52,402 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:41:52,402 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:41:52,403 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:41:52,430 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:41:52,433 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:41:52,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:52,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:52,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 18:41:52,440 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:41:52,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:41:52,452 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:41:52,452 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:41:52,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:41:52,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:41:52,484 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:41:52,485 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:41:52,489 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:41:52,492 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:41:52,492 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:41:52,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:52,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:52,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 18:41:52,501 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:41:52,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 18:41:52,505 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:41:52,505 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:41:52,506 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1) = -2*x1 + 19999 Supporting invariants [] [2025-04-26 18:41:52,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 18:41:52,513 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:41:52,529 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:41:52,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:41:52,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:41:52,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:41:52,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:41:52,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:41:52,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:41:52,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:41:52,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:41:52,545 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:41:52,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:41:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:41:52,594 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 18:41:52,596 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 31 states, 29 states have (on average 1.5517241379310345) internal successors, (in total 45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:52,684 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 31 states, 29 states have (on average 1.5517241379310345) internal successors, (in total 45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 65 states and 100 transitions. Complement of second has 7 states. [2025-04-26 18:41:52,686 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:41:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2025-04-26 18:41:52,695 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 18:41:52,695 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:41:52,695 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 18:41:52,695 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:41:52,696 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 18:41:52,696 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:41:52,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 100 transitions. [2025-04-26 18:41:52,698 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2025-04-26 18:41:52,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 21 states and 32 transitions. [2025-04-26 18:41:52,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2025-04-26 18:41:52,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2025-04-26 18:41:52,701 INFO L74 IsDeterministic]: Start isDeterministic. Operand 21 states and 32 transitions. [2025-04-26 18:41:52,701 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:41:52,701 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 32 transitions. [2025-04-26 18:41:52,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 32 transitions. [2025-04-26 18:41:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2025-04-26 18:41:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (in total 29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2025-04-26 18:41:52,716 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 29 transitions. [2025-04-26 18:41:52,716 INFO L438 stractBuchiCegarLoop]: Abstraction has 19 states and 29 transitions. [2025-04-26 18:41:52,716 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:41:52,716 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 29 transitions. [2025-04-26 18:41:52,716 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2025-04-26 18:41:52,717 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:41:52,717 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:41:52,717 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 18:41:52,717 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:41:52,717 INFO L752 eck$LassoCheckResult]: Stem: "[32] $Ultimate##0-->L32: Formula: (and (= v_x2_6 v_x1_6) (<= 0 v_x1_6)) InVars {x1=v_x1_6, x2=v_x2_6} OutVars{x1=v_x1_6, x2=v_x2_6} AuxVars[] AssignedVars[]" "[53] L32-->L15: Formula: (= v_thread1Thread1of1ForFork1_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_thidvar0]" "[40] L15-->thread1FINAL: Formula: (<= 10000 v_x1_4) InVars {x1=v_x1_4} OutVars{x1=v_x1_4} AuxVars[] AssignedVars[]" "[42] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[50] L32-1-->L23: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-04-26 18:41:52,717 INFO L754 eck$LassoCheckResult]: Loop: "[45] L23-->L24: Formula: (< v_x2_1 10000) InVars {x2=v_x2_1} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[]" "[47] L24-->L23: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-04-26 18:41:52,718 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:41:52,718 INFO L85 PathProgramCache]: Analyzing trace with hash 59800538, now seen corresponding path program 1 times [2025-04-26 18:41:52,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:41:52,718 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036004755] [2025-04-26 18:41:52,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:41:52,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:41:52,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:41:52,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:41:52,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,723 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:41:52,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:41:52,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:41:52,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:41:52,727 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:41:52,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2403, now seen corresponding path program 1 times [2025-04-26 18:41:52,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:41:52,728 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208689376] [2025-04-26 18:41:52,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:41:52,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:41:52,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:41:52,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:41:52,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,734 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:41:52,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:41:52,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:41:52,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:41:52,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:41:52,736 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:41:52,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1633743612, now seen corresponding path program 1 times [2025-04-26 18:41:52,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:41:52,736 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007266368] [2025-04-26 18:41:52,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:41:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:41:52,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 18:41:52,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 18:41:52,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:41:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:41:52,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 18:41:52,795 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007266368] [2025-04-26 18:41:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007266368] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 18:41:52,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 18:41:52,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 18:41:52,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203162740] [2025-04-26 18:41:52,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 18:41:52,825 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:41:52,825 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:41:52,825 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:41:52,825 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:41:52,825 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:41:52,825 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,825 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:41:52,825 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:41:52,825 INFO L132 ssoRankerPreferences]: Filename of dumped script: easy1.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 18:41:52,825 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:41:52,825 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:41:52,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:41:52,849 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:41:52,849 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:41:52,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:52,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:52,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 18:41:52,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:41:52,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:41:52,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 18:41:52,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:52,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:52,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 18:41:52,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:41:52,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:41:52,902 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:41:52,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 18:41:52,906 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:41:52,906 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:41:52,906 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:41:52,906 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:41:52,906 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:41:52,906 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,906 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:41:52,906 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:41:52,906 INFO L132 ssoRankerPreferences]: Filename of dumped script: easy1.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 18:41:52,906 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:41:52,906 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:41:52,907 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:41:52,933 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:41:52,933 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:41:52,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:52,935 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:52,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 18:41:52,939 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 18:41:52,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:41:52,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:41:52,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:41:52,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:41:52,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:41:52,950 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:41:52,950 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:41:52,953 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:41:52,956 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:41:52,956 INFO L437 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:41:52,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:41:52,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:41:52,958 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 18:41:52,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 18:41:52,961 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:41:52,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 18:41:52,964 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:41:52,964 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:41:52,964 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2) = -2*x2 + 19999 Supporting invariants [] [2025-04-26 18:41:52,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 18:41:52,970 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:41:52,986 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:41:52,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 18:41:52,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 18:41:52,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:52,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:41:52,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:41:52,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:41:53,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:41:53,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:41:53,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:41:53,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:41:53,009 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:41:53,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:41:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 18:41:53,032 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 18:41:53,032 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 29 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:53,057 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 29 transitions. cyclomatic complexity: 15. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 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 36 states and 54 transitions. Complement of second has 6 states. [2025-04-26 18:41:53,058 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 18:41:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2025-04-26 18:41:53,059 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 18:41:53,059 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:41:53,059 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 18:41:53,059 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:41:53,059 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 18:41:53,059 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:41:53,060 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2025-04-26 18:41:53,060 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:41:53,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2025-04-26 18:41:53,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:41:53,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:41:53,061 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:41:53,061 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:41:53,061 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:41:53,061 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:41:53,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 18:41:53,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-26 18:41:53,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-26 18:41:53,064 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:41:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 18:41:53,066 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-04-26 18:41:53,066 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-04-26 18:41:53,066 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:41:53,066 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-04-26 18:41:53,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:41:53,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:41:53,066 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:41:53,066 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:41:53,066 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:41:53,066 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:41:53,066 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-26 18:41:53,067 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:41:53,067 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:41:53,067 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:41:53,067 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:41:53,067 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:41:53,076 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 18:41:53,077 INFO L201 PluginConnector]: Adding new model easy1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:41:53 BoogieIcfgContainer [2025-04-26 18:41:53,077 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:41:53,078 INFO L158 Benchmark]: Toolchain (without parser) took 1421.29ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 86.3MB in the beginning and 86.2MB in the end (delta: 71.6kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:41:53,078 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:41:53,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.59ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 84.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:41:53,079 INFO L158 Benchmark]: Boogie Preprocessor took 19.08ms. Allocated memory is still 159.4MB. Free memory was 84.4MB in the beginning and 83.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:41:53,079 INFO L158 Benchmark]: RCFGBuilder took 151.92ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 74.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 18:41:53,079 INFO L158 Benchmark]: BuchiAutomizer took 1213.94ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.7MB in the beginning and 86.2MB in the end (delta: -11.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:41:53,080 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 159.4MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.59ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 84.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 19.08ms. Allocated memory is still 159.4MB. Free memory was 84.4MB in the beginning and 83.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 151.92ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 74.7MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1213.94ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.7MB in the beginning and 86.2MB in the end (delta: -11.5MB). 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 1.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 21 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 71ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 147, Number of transitions in reduction automaton: 45, Number of states in reduction automaton: 31, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * x1 + 19999 and consists of 5 locations. One deterministic module has affine ranking function 19999 + -2 * x2 and consists of 4 locations. 1 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 18:41:53,091 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...