/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/Termination.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/2_thr/b2.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 18:42:01,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 18:42:01,848 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/Termination.epf [2025-04-26 18:42:01,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 18:42:01,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 18:42:01,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Check unreachability of error function in SV-COMP mode [2025-04-26 18:42:01,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2025-04-26 18:42:01,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 18:42:01,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 18:42:01,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 18:42:01,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 18:42:01,867 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * Automaton type for concurrent programs=PARTIAL_ORDER_BA [2025-04-26 18:42:01,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 18:42:01,867 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 18:42:01,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:01,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-26 18:42:01,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-26 18:42:01,869 INFO L153 SettingsManager]: * Use conditional POR in concurrent analysis=false [2025-04-26 18:42:01,869 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 18:42:01,869 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 18:42:02,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 18:42:02,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 18:42:02,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 18:42:02,101 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 18:42:02,102 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 18:42:02,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/b2.c.bpl [2025-04-26 18:42:02,103 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/b2.c.bpl' [2025-04-26 18:42:02,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 18:42:02,117 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 18:42:02,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:02,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 18:42:02,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 18:42:02,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,147 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 18:42:02,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 18:42:02,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 18:42:02,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 18:42:02,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 18:42:02,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,158 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,172 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 18:42:02,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 18:42:02,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 18:42:02,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 18:42:02,174 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/1) ... [2025-04-26 18:42:02,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 [2025-04-26 18:42:02,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:02,197 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 18:42:02,200 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 18:42:02,221 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 18:42:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 18:42:02,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 18:42:02,222 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 18:42:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 18:42:02,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 18:42:02,222 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 18:42:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 18:42:02,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 18:42:02,223 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 18:42:02,259 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 18:42:02,260 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 18:42:02,318 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 18:42:02,318 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 18:42:02,324 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 18:42:02,324 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 18:42:02,325 INFO L201 PluginConnector]: Adding new model b2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:02 BoogieIcfgContainer [2025-04-26 18:42:02,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 18:42:02,325 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 18:42:02,325 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 18:42:02,329 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 18:42:02,330 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:02,330 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "b2.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 06:42:02" (1/2) ... [2025-04-26 18:42:02,331 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79b9a062 and model type b2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 06:42:02, skipping insertion in model container [2025-04-26 18:42:02,331 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 18:42:02,331 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "b2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 06:42:02" (2/2) ... [2025-04-26 18:42:02,332 INFO L376 chiAutomizerObserver]: Analyzing ICFG b2.c.bpl [2025-04-26 18:42:02,375 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 18:42:02,418 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-26 18:42:02,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-26 18:42:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:02,421 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 18:42:02,423 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 18:42:02,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 20 transitions, 54 flow [2025-04-26 18:42:02,488 INFO L116 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-04-26 18:42:02,491 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 18:42:02,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-04-26 18:42:02,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 20 transitions, 54 flow [2025-04-26 18:42:02,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 16 transitions, 44 flow [2025-04-26 18:42:02,500 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 21 places, 16 transitions, 44 flow [2025-04-26 18:42:02,500 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 16 transitions, 44 flow [2025-04-26 18:42:02,512 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 42 states, 41 states have (on average 1.975609756097561) internal successors, (in total 81), 41 states have internal predecessors, (81), 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 18:42:02,513 INFO L171 actionProvider$Eager]: Constructed initial Büchi automaton abstraction (from Petri net) that has 42 states, 41 states have (on average 1.975609756097561) internal successors, (in total 81), 41 states have internal predecessors, (81), 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 18:42:02,514 INFO L135 AmpleReduction]: Starting ample reduction [2025-04-26 18:42:02,542 WARN L140 AmpleReduction]: Number of pruned transitions: 17 [2025-04-26 18:42:02,542 WARN L141 AmpleReduction]: Loop nodes with "changing loop node status": 0 [2025-04-26 18:42:02,542 WARN L142 AmpleReduction]: Number of trivial sets caused by loops: 6 [2025-04-26 18:42:02,542 WARN L143 AmpleReduction]: Number of not loop caused trivial ample sets:12 [2025-04-26 18:42:02,543 WARN L144 AmpleReduction]: Number of initially assigned non-trivial ample sets:15 [2025-04-26 18:42:02,543 WARN L145 AmpleReduction]: Times succ was already a loop node:6 [2025-04-26 18:42:02,543 WARN L146 AmpleReduction]: Times some other node on the cycle already had a trivial ample set:6 [2025-04-26 18:42:02,543 INFO L149 AmpleReduction]: Finished ample reduction [2025-04-26 18:42:02,544 INFO L136 dAbstractionProvider]: Constructed initial ample set-reduced NBA abstraction that has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (in total 48), 33 states have internal predecessors, (48), 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 18:42:02,550 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 18:42:02,550 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 18:42:02,550 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 18:42:02,550 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 18:42:02,550 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 18:42:02,550 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 18:42:02,550 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 18:42:02,550 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 18:42:02,551 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (in total 48), 33 states have internal predecessors, (48), 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 18:42:02,559 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-04-26 18:42:02,559 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:02,559 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:02,562 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 18:42:02,562 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:02,562 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 18:42:02,562 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (in total 48), 33 states have internal predecessors, (48), 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 18:42:02,563 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-04-26 18:42:02,564 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:02,564 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:02,565 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 18:42:02,565 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-04-26 18:42:02,569 INFO L752 eck$LassoCheckResult]: Stem: "[52] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[39] $Ultimate##0-->L22: Formula: (= v_x3_1 0) InVars {} OutVars{x3=v_x3_1} AuxVars[] AssignedVars[x3]" "[40] L22-->L23-1: Formula: (= v_x1_1 0) InVars {} OutVars{x1=v_x1_1} AuxVars[] AssignedVars[x1]" [2025-04-26 18:42:02,569 INFO L754 eck$LassoCheckResult]: Loop: "[42] L23-1-->L25: Formula: (< (+ v_x3_2 v_x1_2) v_z_1) InVars {x1=v_x1_2, x3=v_x3_2, z=v_z_1} OutVars{x1=v_x1_2, x3=v_x3_2, z=v_z_1} AuxVars[] AssignedVars[]" "[44] L25-->L26: Formula: (= (+ v_x3_4 1) v_x3_3) InVars {x3=v_x3_4} OutVars{x3=v_x3_3} AuxVars[] AssignedVars[x3]" "[45] L26-->L23-1: Formula: (= (+ v_x1_4 1) v_x1_3) InVars {x1=v_x1_4} OutVars{x1=v_x1_3} AuxVars[] AssignedVars[x1]" [2025-04-26 18:42:02,573 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:02,573 INFO L85 PathProgramCache]: Analyzing trace with hash 81012, now seen corresponding path program 1 times [2025-04-26 18:42:02,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:02,578 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783845373] [2025-04-26 18:42:02,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:02,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:02,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:02,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:02,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:02,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:02,629 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:02,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:02,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:02,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:02,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:02,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:02,649 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash 71562, now seen corresponding path program 1 times [2025-04-26 18:42:02,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:02,650 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704415217] [2025-04-26 18:42:02,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:02,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:02,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:02,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:02,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:02,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:02,662 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:02,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:02,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:02,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:02,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:02,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:02,672 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1881497033, now seen corresponding path program 1 times [2025-04-26 18:42:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:02,672 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554776408] [2025-04-26 18:42:02,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:02,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:02,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:02,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:02,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:02,677 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:02,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:02,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:02,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:02,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:02,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:02,744 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:02,744 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:02,744 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:02,744 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:02,745 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:02,745 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:02,745 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:02,745 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:02,745 INFO L132 ssoRankerPreferences]: Filename of dumped script: b2.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:02,745 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:02,745 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:02,755 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:02,839 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:02,840 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:02,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:02,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:02,843 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 18:42:02,845 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 18:42:02,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:02,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:02,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:02,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:02,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:02,867 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 18:42:02,868 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 18:42:02,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:02,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:02,967 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:02,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 18:42:02,972 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:02,972 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:02,972 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:02,972 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:02,972 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:02,972 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:02,972 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:02,972 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:02,972 INFO L132 ssoRankerPreferences]: Filename of dumped script: b2.c.bpl_petrified1_Iteration1_Loop [2025-04-26 18:42:02,972 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:02,972 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:02,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:03,010 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:03,013 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:03,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:03,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:03,019 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 18:42:03,049 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 18:42:03,049 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 18:42:03,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:03,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:03,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:03,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:03,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:03,076 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:03,076 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:03,080 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:03,085 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 18:42:03,085 INFO L437 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 18:42:03,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:03,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:03,091 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 18:42:03,093 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 18:42:03,093 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:03,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:03,100 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:03,100 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:03,101 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z, x3) = -1*x1 + 1*z - 1*x3 Supporting invariants [] [2025-04-26 18:42:03,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-04-26 18:42:03,109 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:03,151 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:03,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:03,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:03,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:03,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:03,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:03,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 18:42:03,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 18:42:03,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:03,174 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-26 18:42:03,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:03,242 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 18:42:03,273 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 18:42:03,275 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (in total 48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:03,351 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (in total 48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 67 states and 99 transitions. Complement of second has 6 states. [2025-04-26 18:42:03,354 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 18:42:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (in total 6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 18:42:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2025-04-26 18:42:03,364 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 3 letters. Loop has 3 letters. [2025-04-26 18:42:03,365 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:03,365 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 6 letters. Loop has 3 letters. [2025-04-26 18:42:03,366 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:03,366 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 3 letters. Loop has 6 letters. [2025-04-26 18:42:03,367 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:03,367 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 99 transitions. [2025-04-26 18:42:03,371 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2025-04-26 18:42:03,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 28 states and 39 transitions. [2025-04-26 18:42:03,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2025-04-26 18:42:03,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2025-04-26 18:42:03,376 INFO L74 IsDeterministic]: Start isDeterministic. Operand 28 states and 39 transitions. [2025-04-26 18:42:03,376 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 18:42:03,376 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 39 transitions. [2025-04-26 18:42:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 39 transitions. [2025-04-26 18:42:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2025-04-26 18:42:03,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (in total 37), 25 states have internal predecessors, (37), 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 18:42:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2025-04-26 18:42:03,395 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 37 transitions. [2025-04-26 18:42:03,395 INFO L438 stractBuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2025-04-26 18:42:03,395 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 18:42:03,395 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 37 transitions. [2025-04-26 18:42:03,396 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2025-04-26 18:42:03,396 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 18:42:03,396 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 18:42:03,396 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 18:42:03,396 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 18:42:03,398 INFO L752 eck$LassoCheckResult]: Stem: "[52] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[39] $Ultimate##0-->L22: Formula: (= v_x3_1 0) InVars {} OutVars{x3=v_x3_1} AuxVars[] AssignedVars[x3]" "[40] L22-->L23-1: Formula: (= v_x1_1 0) InVars {} OutVars{x1=v_x1_1} AuxVars[] AssignedVars[x1]" "[41] L23-1-->thread1FINAL: Formula: (<= v_z_2 (+ v_x3_5 v_x1_5)) InVars {x1=v_x1_5, x3=v_x3_5, z=v_z_2} OutVars{x1=v_x1_5, x3=v_x3_5, z=v_z_2} AuxVars[] AssignedVars[]" "[43] thread1FINAL-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[55] L12-->L33: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 18:42:03,398 INFO L754 eck$LassoCheckResult]: Loop: "[47] L33-->L35: Formula: (< v_x2_2 v_z_4) InVars {x2=v_x2_2, z=v_z_4} OutVars{x2=v_x2_2, z=v_z_4} AuxVars[] AssignedVars[]" "[49] L35-->L33: Formula: (= v_x2_3 (+ v_x2_4 1)) InVars {x2=v_x2_4} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[x2]" [2025-04-26 18:42:03,399 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1881498015, now seen corresponding path program 1 times [2025-04-26 18:42:03,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:03,400 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406781303] [2025-04-26 18:42:03,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:03,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:03,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:03,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:03,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:03,407 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:03,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:03,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:03,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:03,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:03,412 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2467, now seen corresponding path program 1 times [2025-04-26 18:42:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:03,412 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763286627] [2025-04-26 18:42:03,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:03,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:03,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:03,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:03,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:03,418 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:03,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:03,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:03,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:03,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:03,422 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash 61640707, now seen corresponding path program 1 times [2025-04-26 18:42:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 18:42:03,422 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833901289] [2025-04-26 18:42:03,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 18:42:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 18:42:03,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:42:03,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:42:03,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:03,432 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 18:42:03,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 18:42:03,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 18:42:03,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 18:42:03,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 18:42:03,456 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:03,457 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:03,457 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:03,457 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:03,457 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 18:42:03,457 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:03,457 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:03,457 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:03,457 INFO L132 ssoRankerPreferences]: Filename of dumped script: b2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:03,457 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:03,457 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:03,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:03,481 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:03,481 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 18:42:03,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:03,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:03,485 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 18:42:03,486 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 18:42:03,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 18:42:03,488 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:03,510 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 18:42:03,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:03,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:03,515 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 18:42:03,516 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 18:42:03,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 18:42:03,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 18:42:03,580 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 18:42:03,584 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 18:42:03,584 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 18:42:03,584 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 18:42:03,585 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 18:42:03,585 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 18:42:03,585 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 18:42:03,585 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:03,585 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 18:42:03,585 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 18:42:03,585 INFO L132 ssoRankerPreferences]: Filename of dumped script: b2.c.bpl_petrified1_Iteration2_Loop [2025-04-26 18:42:03,585 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 18:42:03,585 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 18:42:03,585 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 18:42:03,605 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 18:42:03,605 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 18:42:03,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:03,607 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 18:42:03,608 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 18:42:03,610 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 18:42:03,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 18:42:03,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 18:42:03,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 18:42:03,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 18:42:03,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 18:42:03,621 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 18:42:03,621 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 18:42:03,623 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 18:42:03,627 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 18:42:03,627 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 18:42:03,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 18:42:03,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 18:42:03,629 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 18:42:03,631 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 18:42:03,632 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 18:42:03,635 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 18:42:03,636 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 18:42:03,636 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 18:42:03,636 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 18:42:03,636 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-04-26 18:42:03,644 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 18:42:03,645 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 18:42:03,659 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 18:42:03,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 18:42:03,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 18:42:03,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:03,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 18:42:03,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:03,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 18:42:03,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 18:42:03,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 18:42:03,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 18:42:03,678 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 18:42:03,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 18:42:03,694 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 18:42:03,694 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 18:42:03,694 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 37 transitions. cyclomatic complexity: 16 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 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 18:42:03,724 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 37 transitions. cyclomatic complexity: 16. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 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) Result 48 states and 68 transitions. Complement of second has 6 states. [2025-04-26 18:42:03,725 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 18:42:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 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 18:42:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2025-04-26 18:42:03,726 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 18:42:03,726 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:03,726 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 2 letters. [2025-04-26 18:42:03,726 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:03,726 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 18:42:03,726 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 18:42:03,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 68 transitions. [2025-04-26 18:42:03,727 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:03,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 0 states and 0 transitions. [2025-04-26 18:42:03,727 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 18:42:03,727 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 18:42:03,727 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 18:42:03,727 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 18:42:03,727 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:03,727 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:03,727 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 18:42:03,727 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 18:42:03,727 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 18:42:03,727 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 18:42:03,728 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 18:42:03,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-26 18:42:03,739 INFO L201 PluginConnector]: Adding new model b2.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 06:42:03 BoogieIcfgContainer [2025-04-26 18:42:03,739 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 18:42:03,740 INFO L158 Benchmark]: Toolchain (without parser) took 1622.56ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 83.6MB in the beginning and 78.7MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:03,740 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:03,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.87ms. Allocated memory is still 155.2MB. Free memory was 83.4MB in the beginning and 81.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:03,740 INFO L158 Benchmark]: Boogie Preprocessor took 22.62ms. Allocated memory is still 155.2MB. Free memory was 81.6MB in the beginning and 80.7MB in the end (delta: 876.5kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 18:42:03,741 INFO L158 Benchmark]: RCFGBuilder took 152.06ms. Allocated memory is still 155.2MB. Free memory was 80.5MB in the beginning and 72.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-26 18:42:03,741 INFO L158 Benchmark]: BuchiAutomizer took 1413.84ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 71.9MB in the beginning and 78.7MB in the end (delta: -6.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 18:42:03,742 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 0.16ms. Allocated memory is still 155.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.87ms. Allocated memory is still 155.2MB. Free memory was 83.4MB in the beginning and 81.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 22.62ms. Allocated memory is still 155.2MB. Free memory was 81.6MB in the beginning and 80.7MB in the end (delta: 876.5kB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 152.06ms. Allocated memory is still 155.2MB. Free memory was 80.5MB in the beginning and 72.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1413.84ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 71.9MB in the beginning and 78.7MB in the end (delta: -6.8MB). 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 1.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. 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, 35 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 18 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf109 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 86ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 129, Number of transitions in reduction automaton: 48, Number of states in reduction automaton: 34, Underlying: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 18:42:03,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...