/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/buchiAutomizer/concurrent-automaton-noLbe.epf --buchiautomizer.automaton.type.for.concurrent.programs PARTIAL_ORDER_BA -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/2_thr/bb3_b.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:48:39,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:48:40,015 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:48:40,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:48:40,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:48:40,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:48:40,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:48:40,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:48:40,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:48:40,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:48:40,037 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:48:40,037 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:48:40,037 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:48:40,037 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:48:40,037 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:48:40,037 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:48:40,037 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:48:40,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:48:40,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:48:40,037 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:48:40,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:48:40,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:48:40,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:48:40,039 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:48:40,039 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> PARTIAL_ORDER_BA [2025-02-17 22:48:40,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:48:40,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:48:40,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:48:40,290 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:48:40,291 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:48:40,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/bb3_b.c.bpl [2025-02-17 22:48:40,293 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/bb3_b.c.bpl' [2025-02-17 22:48:40,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:48:40,305 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:48:40,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:40,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:48:40,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:48:40,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,321 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:48:40,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:40,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:48:40,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:48:40,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:48:40,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,330 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,330 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,334 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:48:40,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:48:40,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:48:40,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:48:40,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/1) ... [2025-02-17 22:48:40,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:40,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:40,367 INFO L229 MonitoredProcess]: Starting monitored process 1 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) [2025-02-17 22:48:40,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:48:40,391 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:48:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:48:40,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:48:40,391 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:48:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:48:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:48:40,392 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:48:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:48:40,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:48:40,392 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:48:40,427 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:48:40,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:48:40,492 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:48:40,492 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:48:40,498 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:48:40,498 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:48:40,499 INFO L201 PluginConnector]: Adding new model bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:40 BoogieIcfgContainer [2025-02-17 22:48:40,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:48:40,499 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:48:40,499 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:48:40,503 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:48:40,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:40,503 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:40" (1/2) ... [2025-02-17 22:48:40,504 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ada8c5a and model type bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:48:40, skipping insertion in model container [2025-02-17 22:48:40,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:40,504 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:40" (2/2) ... [2025-02-17 22:48:40,505 INFO L363 chiAutomizerObserver]: Analyzing ICFG bb3_b.c.bpl [2025-02-17 22:48:40,547 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:48:40,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2025-02-17 22:48:40,605 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-02-17 22:48:40,606 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:48:40,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 4/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2025-02-17 22:48:40,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2025-02-17 22:48:40,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 24 transitions, 60 flow [2025-02-17 22:48:40,619 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:48:40,860 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:48:40,860 INFO L101 AmpleReduction]: Number of pruned transitions: 28, Number of non-trivial ample sets: 54 [2025-02-17 22:48:40,860 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 37 [2025-02-17 22:48:40,866 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:48:40,866 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:48:40,866 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:48:40,866 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:48:40,866 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:48:40,866 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:48:40,866 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:48:40,866 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:48:40,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.855421686746988) internal successors, (154), 83 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:40,882 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 50 [2025-02-17 22:48:40,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:40,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:40,886 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:40,886 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:40,886 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:48:40,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.855421686746988) internal successors, (154), 83 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:40,889 INFO L131 ngComponentsAnalysis]: Automaton has 21 accepting balls. 50 [2025-02-17 22:48:40,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:40,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:40,889 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:40,889 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:40,893 INFO L752 eck$LassoCheckResult]: Stem: "[56] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[82] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:48:40,893 INFO L754 eck$LassoCheckResult]: Loop: "[63] L22-->L24: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[65] L24-->L22: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:48:40,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2779, now seen corresponding path program 1 times [2025-02-17 22:48:40,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:40,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999757878] [2025-02-17 22:48:40,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:40,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:40,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:40,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:40,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:40,962 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:40,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:40,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:40,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:40,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:40,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:40,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:40,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2979, now seen corresponding path program 1 times [2025-02-17 22:48:40,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:40,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002599060] [2025-02-17 22:48:40,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:40,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:40,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:40,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:40,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:40,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:40,991 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:40,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:40,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:40,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:40,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:40,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:41,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:41,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2672637, now seen corresponding path program 1 times [2025-02-17 22:48:41,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:41,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607702480] [2025-02-17 22:48:41,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:41,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:41,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:41,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,008 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:41,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:41,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:41,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:41,045 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:41,046 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:41,046 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:41,046 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:41,047 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:41,047 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,047 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:41,047 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:41,047 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb3_b.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:41,048 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:41,048 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:41,056 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:41,089 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:41,090 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:41,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:41,093 INFO L229 MonitoredProcess]: Starting monitored process 2 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) [2025-02-17 22:48:41,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:48:41,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:41,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:41,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:48:41,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:41,124 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) [2025-02-17 22:48:41,125 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 [2025-02-17 22:48:41,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:41,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:41,193 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:41,197 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 [2025-02-17 22:48:41,197 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:41,197 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:41,197 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:41,197 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:41,197 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:41,198 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,198 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:41,198 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:41,198 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb3_b.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:41,198 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:41,198 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:41,198 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:41,215 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:41,218 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:41,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:41,220 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) [2025-02-17 22:48:41,222 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 [2025-02-17 22:48:41,226 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 [2025-02-17 22:48:41,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:41,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:41,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:41,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:41,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:41,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:41,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:41,243 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:41,248 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:48:41,248 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:41,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:41,251 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) [2025-02-17 22:48:41,253 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 [2025-02-17 22:48:41,258 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:41,258 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:41,258 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:41,259 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:48:41,265 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 [2025-02-17 22:48:41,267 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:41,292 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 [2025-02-17 22:48:41,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:41,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:41,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:41,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:41,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:41,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:41,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:41,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:41,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:41,318 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:41,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:41,381 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 [2025-02-17 22:48:41,382 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 84 states, 83 states have (on average 1.855421686746988) internal successors, (154), 83 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:41,501 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 84 states, 83 states have (on average 1.855421686746988) internal successors, (154), 83 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 253 states and 491 transitions. Complement of second has 7 states. [2025-02-17 22:48:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2025-02-17 22:48:41,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 69 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:48:41,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:41,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 69 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:48:41,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:41,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 69 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:48:41,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:41,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 253 states and 491 transitions. [2025-02-17 22:48:41,515 INFO L131 ngComponentsAnalysis]: Automaton has 20 accepting balls. 44 [2025-02-17 22:48:41,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 253 states to 133 states and 269 transitions. [2025-02-17 22:48:41,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2025-02-17 22:48:41,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2025-02-17 22:48:41,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 133 states and 269 transitions. [2025-02-17 22:48:41,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:41,520 INFO L218 hiAutomatonCegarLoop]: Abstraction has 133 states and 269 transitions. [2025-02-17 22:48:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states and 269 transitions. [2025-02-17 22:48:41,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 106. [2025-02-17 22:48:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 106 states have (on average 2.1037735849056602) internal successors, (223), 105 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 223 transitions. [2025-02-17 22:48:41,538 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 223 transitions. [2025-02-17 22:48:41,538 INFO L432 stractBuchiCegarLoop]: Abstraction has 106 states and 223 transitions. [2025-02-17 22:48:41,539 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:48:41,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 223 transitions. [2025-02-17 22:48:41,540 INFO L131 ngComponentsAnalysis]: Automaton has 20 accepting balls. 44 [2025-02-17 22:48:41,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:41,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:41,541 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:48:41,541 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:41,541 INFO L752 eck$LassoCheckResult]: Stem: "[56] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[82] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[85] L13-1-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:48:41,541 INFO L754 eck$LassoCheckResult]: Loop: "[72] L37-->L39: Formula: (< v_x3_5 v_z_5) InVars {x3=v_x3_5, z=v_z_5} OutVars{x3=v_x3_5, z=v_z_5} AuxVars[] AssignedVars[]" "[74] L39-->L37: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-02-17 22:48:41,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash 86234, now seen corresponding path program 1 times [2025-02-17 22:48:41,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:41,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550541784] [2025-02-17 22:48:41,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:41,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:41,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:41,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:41,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,544 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:41,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:41,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:41,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:41,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:41,546 INFO L85 PathProgramCache]: Analyzing trace with hash 3267, now seen corresponding path program 1 times [2025-02-17 22:48:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397590368] [2025-02-17 22:48:41,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:41,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:41,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:41,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,548 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:41,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:41,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:41,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:41,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash 82873180, now seen corresponding path program 1 times [2025-02-17 22:48:41,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:41,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811178764] [2025-02-17 22:48:41,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:41,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:41,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:41,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:41,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,553 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:41,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:41,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:41,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:41,567 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:41,567 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:41,567 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:41,567 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:41,568 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:41,568 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,568 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:41,568 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:41,568 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb3_b.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:41,568 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:41,568 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:41,568 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:41,583 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:41,583 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:41,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:41,585 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) [2025-02-17 22:48:41,587 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 [2025-02-17 22:48:41,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:41,593 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:41,609 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 [2025-02-17 22:48:41,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:41,611 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) [2025-02-17 22:48:41,612 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 [2025-02-17 22:48:41,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:41,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:41,676 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:41,680 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 [2025-02-17 22:48:41,681 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:41,681 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:41,681 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:41,681 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:41,682 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:41,682 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,682 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:41,682 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:41,682 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb3_b.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:41,682 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:41,682 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:41,682 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:41,706 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:41,706 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:41,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:41,708 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) [2025-02-17 22:48:41,709 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 [2025-02-17 22:48:41,711 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 [2025-02-17 22:48:41,722 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:41,722 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:41,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:41,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:41,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:41,723 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:41,723 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:41,725 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:41,727 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:41,727 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:48:41,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:41,765 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) [2025-02-17 22:48:41,766 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 [2025-02-17 22:48:41,767 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:41,767 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:41,767 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:41,767 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:48:41,772 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 [2025-02-17 22:48:41,773 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:41,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:41,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:41,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:41,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:41,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:41,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:41,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:41,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:41,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:41,816 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:41,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:41,839 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 [2025-02-17 22:48:41,840 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 223 transitions. cyclomatic complexity: 144 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:41,909 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 223 transitions. cyclomatic complexity: 144. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 319 states and 682 transitions. Complement of second has 7 states. [2025-02-17 22:48:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2025-02-17 22:48:41,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 77 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:48:41,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:41,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 77 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:48:41,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:41,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 77 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:48:41,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:41,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 319 states and 682 transitions. [2025-02-17 22:48:41,916 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 14 [2025-02-17 22:48:41,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 319 states to 189 states and 409 transitions. [2025-02-17 22:48:41,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2025-02-17 22:48:41,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2025-02-17 22:48:41,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 409 transitions. [2025-02-17 22:48:41,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:41,918 INFO L218 hiAutomatonCegarLoop]: Abstraction has 189 states and 409 transitions. [2025-02-17 22:48:41,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states and 409 transitions. [2025-02-17 22:48:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 159. [2025-02-17 22:48:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 159 states have (on average 2.2327044025157234) internal successors, (355), 158 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 355 transitions. [2025-02-17 22:48:41,925 INFO L240 hiAutomatonCegarLoop]: Abstraction has 159 states and 355 transitions. [2025-02-17 22:48:41,925 INFO L432 stractBuchiCegarLoop]: Abstraction has 159 states and 355 transitions. [2025-02-17 22:48:41,925 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:48:41,925 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 159 states and 355 transitions. [2025-02-17 22:48:41,927 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 14 [2025-02-17 22:48:41,927 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:41,927 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:41,927 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:48:41,927 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:41,928 INFO L752 eck$LassoCheckResult]: Stem: "[56] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[82] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[62] L22-->L26: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[64] L26-->L27: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[66] L27-->L28-1: Formula: (<= 2 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-02-17 22:48:41,928 INFO L754 eck$LassoCheckResult]: Loop: "[68] L28-1-->L30: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[70] L30-->L28-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:48:41,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash 82850821, now seen corresponding path program 1 times [2025-02-17 22:48:41,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:41,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108378543] [2025-02-17 22:48:41,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:41,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:41,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:41,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:41,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:41,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:48:41,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108378543] [2025-02-17 22:48:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108378543] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:48:41,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:48:41,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:48:41,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377678702] [2025-02-17 22:48:41,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:48:41,961 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:48:41,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash 3139, now seen corresponding path program 1 times [2025-02-17 22:48:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:41,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168014930] [2025-02-17 22:48:41,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:41,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:41,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:41,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:41,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,964 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:41,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:41,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:41,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:41,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:41,965 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:41,981 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:41,981 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:41,981 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:41,981 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:41,981 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:41,981 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:41,981 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:41,981 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:41,981 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb3_b.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:41,981 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:41,981 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:41,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:42,008 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:42,008 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:42,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:42,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:42,011 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) [2025-02-17 22:48:42,012 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 [2025-02-17 22:48:42,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:42,013 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:42,029 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 [2025-02-17 22:48:42,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:42,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:42,031 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:42,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:48:42,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:42,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:42,102 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:42,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:48:42,106 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:42,106 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:42,106 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:42,106 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:42,107 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:42,107 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:42,107 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:42,107 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:42,107 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb3_b.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:42,107 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:42,107 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:42,107 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:42,126 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:42,126 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:42,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:42,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:42,129 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:42,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:48:42,131 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 [2025-02-17 22:48:42,142 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:42,142 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:42,142 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:42,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:42,142 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:42,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:42,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:42,146 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:42,149 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:42,149 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:42,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:42,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:42,151 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:42,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:48:42,155 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:42,155 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:42,155 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:42,155 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:48:42,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:42,162 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:42,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:42,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:42,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:42,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:42,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:42,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:42,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:42,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:42,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:42,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:42,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:42,192 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:42,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:42,205 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 [2025-02-17 22:48:42,205 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 159 states and 355 transitions. cyclomatic complexity: 222 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:42,274 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 159 states and 355 transitions. cyclomatic complexity: 222. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 335 states and 784 transitions. Complement of second has 7 states. [2025-02-17 22:48:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:42,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2025-02-17 22:48:42,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:48:42,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:42,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:48:42,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:42,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:48:42,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:42,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 784 transitions. [2025-02-17 22:48:42,283 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 12 [2025-02-17 22:48:42,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 225 states and 497 transitions. [2025-02-17 22:48:42,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2025-02-17 22:48:42,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2025-02-17 22:48:42,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 497 transitions. [2025-02-17 22:48:42,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:42,287 INFO L218 hiAutomatonCegarLoop]: Abstraction has 225 states and 497 transitions. [2025-02-17 22:48:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 497 transitions. [2025-02-17 22:48:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 161. [2025-02-17 22:48:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 161 states have (on average 2.2049689440993787) internal successors, (355), 160 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 355 transitions. [2025-02-17 22:48:42,301 INFO L240 hiAutomatonCegarLoop]: Abstraction has 161 states and 355 transitions. [2025-02-17 22:48:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:48:42,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:48:42,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:48:42,306 INFO L87 Difference]: Start difference. First operand 161 states and 355 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:48:42,327 INFO L93 Difference]: Finished difference Result 87 states and 181 transitions. [2025-02-17 22:48:42,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 181 transitions. [2025-02-17 22:48:42,328 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2025-02-17 22:48:42,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 77 states and 155 transitions. [2025-02-17 22:48:42,328 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2025-02-17 22:48:42,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2025-02-17 22:48:42,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 155 transitions. [2025-02-17 22:48:42,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:42,329 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 155 transitions. [2025-02-17 22:48:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 155 transitions. [2025-02-17 22:48:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2025-02-17 22:48:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 2.012987012987013) internal successors, (155), 76 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 155 transitions. [2025-02-17 22:48:42,334 INFO L240 hiAutomatonCegarLoop]: Abstraction has 77 states and 155 transitions. [2025-02-17 22:48:42,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-17 22:48:42,334 INFO L432 stractBuchiCegarLoop]: Abstraction has 77 states and 155 transitions. [2025-02-17 22:48:42,334 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:48:42,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 155 transitions. [2025-02-17 22:48:42,335 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2025-02-17 22:48:42,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:42,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:42,336 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:48:42,336 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:42,337 INFO L752 eck$LassoCheckResult]: Stem: "[56] $Ultimate##0-->L13: Formula: (= v_x2_7 0) InVars {} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[82] L13-->L22: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[85] L13-1-->L37: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[71] L37-->L41: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[73] L41-->L42: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[62] L22-->L26: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[64] L26-->L27: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[66] L27-->L28-1: Formula: (<= 2 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" "[67] L28-1-->thread1FINAL: Formula: (<= v_z_4 v_x3_4) InVars {x3=v_x3_4, z=v_z_4} OutVars{x3=v_x3_4, z=v_z_4} AuxVars[] AssignedVars[]" "[75] L42-->L43-1: Formula: (<= 2 v_x2_6) InVars {x2=v_x2_6} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[]" [2025-02-17 22:48:42,337 INFO L754 eck$LassoCheckResult]: Loop: "[77] L43-1-->L45: Formula: (< v_x1_5 v_z_7) InVars {x1=v_x1_5, z=v_z_7} OutVars{x1=v_x1_5, z=v_z_7} AuxVars[] AssignedVars[]" "[79] L45-->L43-1: Formula: (= v_x4_1 (+ v_x4_2 1)) InVars {x4=v_x4_2} OutVars{x4=v_x4_1} AuxVars[] AssignedVars[x4]" [2025-02-17 22:48:42,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:42,337 INFO L85 PathProgramCache]: Analyzing trace with hash 748217196, now seen corresponding path program 1 times [2025-02-17 22:48:42,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:42,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106759784] [2025-02-17 22:48:42,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:42,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:42,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:48:42,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:48:42,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:42,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:42,341 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:42,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:48:42,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:48:42,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:42,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:42,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:42,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash 3427, now seen corresponding path program 1 times [2025-02-17 22:48:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:42,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537006564] [2025-02-17 22:48:42,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:42,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:42,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:42,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:42,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:42,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:42,350 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:42,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:42,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:42,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:42,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:42,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:42,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1777189390, now seen corresponding path program 1 times [2025-02-17 22:48:42,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:42,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262269507] [2025-02-17 22:48:42,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:42,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:42,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-17 22:48:42,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-17 22:48:42,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:42,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:42,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:48:42,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262269507] [2025-02-17 22:48:42,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262269507] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:48:42,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:48:42,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:48:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213470923] [2025-02-17 22:48:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:48:42,396 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:42,397 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:42,397 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:42,397 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:42,397 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:42,397 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:42,397 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:42,397 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:42,397 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb3_b.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:48:42,397 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:42,397 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:42,397 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:42,400 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:42,419 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:42,419 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:42,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:42,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:42,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:42,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-17 22:48:42,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:42,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:42,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:42,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:42,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:42,441 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:42,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-17 22:48:42,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:42,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:42,465 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:42,465 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x4=0} Honda state: {x4=0} Generalized eigenvectors: [{x4=2}, {x4=-6}, {x4=5}] Lambdas: [4, 1, 1] Nus: [1, 0] [2025-02-17 22:48:42,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:42,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:42,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:42,472 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:42,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-17 22:48:42,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:42,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:42,491 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:42,491 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x1=0, z=1} Honda state: {x1=0, z=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:48:42,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:48:42,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:48:42,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:48:42,498 INFO L87 Difference]: Start difference. First operand 77 states and 155 transitions. cyclomatic complexity: 93 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:48:42,519 INFO L93 Difference]: Finished difference Result 68 states and 131 transitions. [2025-02-17 22:48:42,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 131 transitions. [2025-02-17 22:48:42,520 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:42,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 0 states and 0 transitions. [2025-02-17 22:48:42,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:48:42,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:48:42,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:48:42,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:48:42,520 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:42,520 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:42,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:48:42,521 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:42,521 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:48:42,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:48:42,521 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:42,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:48:42,528 INFO L201 PluginConnector]: Adding new model bb3_b.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:48:42 BoogieIcfgContainer [2025-02-17 22:48:42,528 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:48:42,529 INFO L158 Benchmark]: Toolchain (without parser) took 2223.57ms. Allocated memory was 167.8MB in the beginning and 155.2MB in the end (delta: -12.6MB). Free memory was 94.8MB in the beginning and 48.0MB in the end (delta: 46.8MB). Peak memory consumption was 34.9MB. Max. memory is 8.0GB. [2025-02-17 22:48:42,529 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:42,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.80ms. Allocated memory is still 167.8MB. Free memory was 94.8MB in the beginning and 93.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:42,529 INFO L158 Benchmark]: Boogie Preprocessor took 10.85ms. Allocated memory is still 167.8MB. Free memory was 93.5MB in the beginning and 92.9MB in the end (delta: 671.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:42,529 INFO L158 Benchmark]: RCFGBuilder took 164.52ms. Allocated memory is still 167.8MB. Free memory was 92.9MB in the beginning and 83.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:48:42,530 INFO L158 Benchmark]: BuchiAutomizer took 2028.90ms. Allocated memory was 167.8MB in the beginning and 155.2MB in the end (delta: -12.6MB). Free memory was 83.8MB in the beginning and 48.0MB in the end (delta: 35.8MB). Peak memory consumption was 26.5MB. Max. memory is 8.0GB. [2025-02-17 22:48:42,530 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 167.8MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 16.80ms. Allocated memory is still 167.8MB. Free memory was 94.8MB in the beginning and 93.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 10.85ms. Allocated memory is still 167.8MB. Free memory was 93.5MB in the beginning and 92.9MB in the end (delta: 671.3kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 164.52ms. Allocated memory is still 167.8MB. Free memory was 92.9MB in the beginning and 83.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2028.90ms. Allocated memory was 167.8MB in the beginning and 155.2MB in the end (delta: -12.6MB). Free memory was 83.8MB in the beginning and 48.0MB in the end (delta: 35.8MB). Peak memory consumption was 26.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 121 StatesRemovedByMinimization, 3 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 167 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 92 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf95 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.2s InitialAbstraction: Time to compute Ample Reduction [ms]: 285, Trivial Ample Sets caused by loops: 37, Number of non-trivial ample sets: 54, Number of pruned transitions: 28, Number of transitions in reduction automaton: 154, Number of states in reduction automaton: 84, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:48:42,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:42,742 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 [2025-02-17 22:48:42,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...