/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 -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/barrier-5t.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:53,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:53,715 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:53,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:53,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:53,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:53,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:53,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:53,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:53,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:53,745 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:53,745 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:53,745 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:53,745 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:53,745 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:53,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:53,746 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:53,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:53,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:53,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:53,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:53,747 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:53,747 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:53,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:53,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:53,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:53,966 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:53,966 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:53,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/barrier-5t.c.bpl [2025-02-17 22:45:53,968 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/barrier-5t.c.bpl' [2025-02-17 22:45:53,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:53,987 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:53,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:53,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:53,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:53,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,005 INFO L138 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:54,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:54,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:54,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:54,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:54,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,015 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,023 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:54,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:54,023 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:54,023 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:54,024 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/1) ... [2025-02-17 22:45:54,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:54,052 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 22:45:54,059 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 22:45:54,077 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:54,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:54,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:54,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:45:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:45:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:45:54,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:54,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:45:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:45:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:45:54,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-02-17 22:45:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-17 22:45:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-17 22:45:54,079 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 22:45:54,115 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:54,116 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:54,235 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:54,235 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:54,242 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:54,242 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:54,243 INFO L201 PluginConnector]: Adding new model barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:54 BoogieIcfgContainer [2025-02-17 22:45:54,243 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:54,243 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:54,243 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:54,247 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:54,247 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:54,247 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:53" (1/2) ... [2025-02-17 22:45:54,248 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c50cc54 and model type barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:54, skipping insertion in model container [2025-02-17 22:45:54,248 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:54,248 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:54" (2/2) ... [2025-02-17 22:45:54,249 INFO L363 chiAutomizerObserver]: Analyzing ICFG barrier-5t.c.bpl [2025-02-17 22:45:54,310 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-02-17 22:45:54,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 169 flow [2025-02-17 22:45:54,361 INFO L124 PetriNetUnfolderBase]: 10/57 cut-off events. [2025-02-17 22:45:54,366 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-02-17 22:45:54,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 57 events. 10/57 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2025-02-17 22:45:54,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 169 flow [2025-02-17 22:45:54,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 57 transitions, 144 flow [2025-02-17 22:45:54,383 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:54,384 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:54,384 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:54,384 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:54,384 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:54,384 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:54,384 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:54,384 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:54,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:57,208 INFO L131 ngComponentsAnalysis]: Automaton has 9180 accepting balls. 40424 [2025-02-17 22:45:57,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:57,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:57,220 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:57,220 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:57,220 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:57,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 42131 states, but on-demand construction may add more states [2025-02-17 22:45:58,299 INFO L131 ngComponentsAnalysis]: Automaton has 9180 accepting balls. 40424 [2025-02-17 22:45:58,299 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:58,299 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:58,303 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:58,303 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:58,307 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:58,307 INFO L754 eck$LassoCheckResult]: Loop: "[150] L28-->L30: 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[]" "[152] L30-->L28: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:45:58,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash 4908, now seen corresponding path program 1 times [2025-02-17 22:45:58,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:58,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738120109] [2025-02-17 22:45:58,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:58,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:58,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:58,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:58,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,366 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:58,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:58,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:58,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:58,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash 5763, now seen corresponding path program 1 times [2025-02-17 22:45:58,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:58,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568513513] [2025-02-17 22:45:58,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:58,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:58,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:58,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:58,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,395 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:58,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:58,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:58,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:58,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:58,399 INFO L85 PathProgramCache]: Analyzing trace with hash 4721390, now seen corresponding path program 1 times [2025-02-17 22:45:58,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:58,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156736178] [2025-02-17 22:45:58,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:58,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:58,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:58,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:58,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,403 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:58,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:58,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:58,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:58,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:58,443 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:58,444 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:58,444 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:58,444 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:58,444 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:58,445 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,445 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:58,445 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:58,445 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:58,445 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:58,445 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:58,454 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:58,497 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:58,497 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:58,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:58,500 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 22:45:58,501 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 22:45:58,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:58,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:58,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:58,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:58,524 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 22:45:58,525 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 22:45:58,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:58,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:58,603 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:58,607 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 22:45:58,607 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:58,608 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:58,608 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:58,608 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:58,608 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:58,608 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,608 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:58,608 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:58,608 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:58,608 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:58,608 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:58,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:58,640 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:58,643 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:58,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:58,645 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 22:45:58,647 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 22:45:58,648 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 22:45:58,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:58,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:58,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:58,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:58,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:58,663 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:58,663 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:58,666 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:58,670 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:58,670 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:58,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:58,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:58,673 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 22:45:58,674 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 22:45:58,676 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:58,676 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:58,676 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:58,676 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-02-17 22:45:58,681 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 22:45:58,684 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:58,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:58,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:58,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:58,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:58,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:58,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:58,788 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 22:45:58,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:58,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:58,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:58,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:58,799 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:58,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:58,827 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 22:45:58,849 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 22:45:58,851 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 42131 states, but on-demand construction may add more states 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 22:46:01,796 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 42131 states, but on-demand construction may add more states. 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 146722 states and 859784 transitions. Complement of second has 7 states. [2025-02-17 22:46:01,797 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 22:46:01,804 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 22:46:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2025-02-17 22:46:01,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:46:01,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:01,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:46:01,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:01,811 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:46:01,811 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:01,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146722 states and 859784 transitions. [2025-02-17 22:46:05,803 INFO L131 ngComponentsAnalysis]: Automaton has 12492 accepting balls. 43912 [2025-02-17 22:46:08,161 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146722 states to 122040 states and 721161 transitions. [2025-02-17 22:46:08,162 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47560 [2025-02-17 22:46:08,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72936 [2025-02-17 22:46:08,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122040 states and 721161 transitions. [2025-02-17 22:46:08,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:08,586 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122040 states and 721161 transitions. [2025-02-17 22:46:09,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122040 states and 721161 transitions. [2025-02-17 22:46:12,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122040 to 96666. [2025-02-17 22:46:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96666 states, 96666 states have (on average 6.054217615293899) internal successors, (585237), 96665 states have internal predecessors, (585237), 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 22:46:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96666 states to 96666 states and 585237 transitions. [2025-02-17 22:46:14,367 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96666 states and 585237 transitions. [2025-02-17 22:46:14,368 INFO L432 stractBuchiCegarLoop]: Abstraction has 96666 states and 585237 transitions. [2025-02-17 22:46:14,368 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:46:14,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96666 states and 585237 transitions. [2025-02-17 22:46:15,383 INFO L131 ngComponentsAnalysis]: Automaton has 12492 accepting balls. 43912 [2025-02-17 22:46:15,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:15,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:15,390 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:46:15,390 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:15,391 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[199] L13-1-->L43: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:46:15,391 INFO L754 eck$LassoCheckResult]: Loop: "[159] L43-->L45: 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[]" "[161] L45-->L43: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-02-17 22:46:15,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 152347, now seen corresponding path program 1 times [2025-02-17 22:46:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087123060] [2025-02-17 22:46:15,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:15,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:15,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:15,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:15,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:15,397 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:15,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:15,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:15,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:15,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:15,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:15,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:15,400 INFO L85 PathProgramCache]: Analyzing trace with hash 6051, now seen corresponding path program 1 times [2025-02-17 22:46:15,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:15,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8516377] [2025-02-17 22:46:15,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:15,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:15,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:15,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:15,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:15,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:15,403 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:15,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:15,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:15,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:15,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:15,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:15,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash 146410557, now seen corresponding path program 1 times [2025-02-17 22:46:15,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:15,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209246044] [2025-02-17 22:46:15,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:15,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:15,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:15,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:15,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:15,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:15,413 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:15,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:15,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:15,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:15,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:15,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:15,432 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:15,432 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:15,432 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:15,432 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:15,432 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:15,432 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:15,432 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:15,433 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:15,433 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:46:15,433 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:15,433 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:15,433 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:15,452 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:15,452 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:15,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:15,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:15,455 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 22:46:15,457 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 22:46:15,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:15,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:15,475 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 22:46:15,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:15,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:15,477 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 22:46:15,478 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 22:46:15,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:15,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:15,542 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:15,546 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 22:46:15,546 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:15,546 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:15,546 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:15,546 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:15,546 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:15,547 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:15,547 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:15,547 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:15,547 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:46:15,547 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:15,547 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:15,547 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:15,562 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:15,563 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:15,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:15,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:15,565 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 22:46:15,565 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 22:46:15,567 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 22:46:15,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:15,576 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:15,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:15,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:15,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:15,577 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:15,577 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:15,579 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:15,581 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:46:15,581 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:46:15,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:15,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:15,583 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 22:46:15,584 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 22:46:15,585 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:15,585 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:15,585 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:15,586 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-02-17 22:46:15,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-17 22:46:15,592 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:15,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:15,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:15,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:15,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:15,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:15,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:15,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:15,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:15,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:15,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:15,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:15,619 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:15,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:15,639 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 22:46:15,639 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 22:46:15,640 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96666 states and 585237 transitions. cyclomatic complexity: 509487 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 22:46:16,279 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 22:46:21,670 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96666 states and 585237 transitions. cyclomatic complexity: 509487. 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 349293 states and 2146739 transitions. Complement of second has 7 states. [2025-02-17 22:46:21,671 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 22:46:21,672 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 22:46:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2025-02-17 22:46:21,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:46:21,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:21,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:46:21,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:21,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:46:21,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:21,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 349293 states and 2146739 transitions. [2025-02-17 22:46:30,428 INFO L131 ngComponentsAnalysis]: Automaton has 16097 accepting balls. 46322 [2025-02-17 22:46:36,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 349293 states to 261685 states and 1637169 transitions. [2025-02-17 22:46:36,169 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75376 [2025-02-17 22:46:36,776 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104936 [2025-02-17 22:46:36,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 261685 states and 1637169 transitions. [2025-02-17 22:46:36,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:36,776 INFO L218 hiAutomatonCegarLoop]: Abstraction has 261685 states and 1637169 transitions. [2025-02-17 22:46:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261685 states and 1637169 transitions. [2025-02-17 22:46:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261685 to 232127. [2025-02-17 22:46:45,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232127 states, 232127 states have (on average 6.395029445088249) internal successors, (1484459), 232126 states have internal predecessors, (1484459), 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 22:46:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232127 states to 232127 states and 1484459 transitions. [2025-02-17 22:46:49,044 INFO L240 hiAutomatonCegarLoop]: Abstraction has 232127 states and 1484459 transitions. [2025-02-17 22:46:49,044 INFO L432 stractBuchiCegarLoop]: Abstraction has 232127 states and 1484459 transitions. [2025-02-17 22:46:49,044 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:46:49,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 232127 states and 1484459 transitions. [2025-02-17 22:46:52,352 INFO L131 ngComponentsAnalysis]: Automaton has 16097 accepting balls. 46322 [2025-02-17 22:46:52,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:52,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:52,378 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:46:52,378 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:52,379 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[199] L13-1-->L43: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[202] L14-->L58: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:46:52,379 INFO L754 eck$LassoCheckResult]: Loop: "[168] L58-->L60: Formula: (< v_x4_5 v_z_9) InVars {x4=v_x4_5, z=v_z_9} OutVars{x4=v_x4_5, z=v_z_9} AuxVars[] AssignedVars[]" "[170] L60-->L58: Formula: (= v_x4_6 (+ v_x4_7 1)) InVars {x4=v_x4_7} OutVars{x4=v_x4_6} AuxVars[] AssignedVars[x4]" [2025-02-17 22:46:52,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:52,379 INFO L85 PathProgramCache]: Analyzing trace with hash 4722959, now seen corresponding path program 1 times [2025-02-17 22:46:52,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:52,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234482096] [2025-02-17 22:46:52,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:52,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:52,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:52,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:52,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:52,392 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:52,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:52,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:52,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:52,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:52,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:52,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:52,397 INFO L85 PathProgramCache]: Analyzing trace with hash 6339, now seen corresponding path program 1 times [2025-02-17 22:46:52,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:52,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621572426] [2025-02-17 22:46:52,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:52,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:52,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:52,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:52,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:52,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:52,401 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:52,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:52,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:52,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:52,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:52,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:52,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash 243801681, now seen corresponding path program 1 times [2025-02-17 22:46:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:52,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305631000] [2025-02-17 22:46:52,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:52,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:52,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:46:52,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:46:52,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:52,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:52,415 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:52,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:46:52,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:46:52,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:52,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:52,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:52,669 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:52,669 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:52,669 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:52,669 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:52,670 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:52,670 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:52,670 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:52,670 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:52,670 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:46:52,670 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:52,670 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:52,670 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:52,691 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:52,691 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:52,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:52,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:52,698 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 22:46:52,699 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 22:46:52,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:52,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:52,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:52,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:52,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:52,735 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 22:46:52,736 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 22:46:52,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:52,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:52,869 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:52,876 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 22:46:52,877 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:52,877 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:52,877 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:52,877 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:52,877 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:52,877 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:52,877 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:52,877 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:52,877 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:46:52,877 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:52,877 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:52,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:52,900 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:52,900 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:52,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:52,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:52,903 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 22:46:52,908 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 22:46:52,909 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 22:46:52,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:52,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:52,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:52,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:52,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:52,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:52,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:52,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:52,939 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:46:52,939 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:52,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:52,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:52,941 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 22:46:52,943 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 22:46:52,947 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:52,947 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:52,947 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:52,947 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:46:52,966 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 22:46:52,967 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:52,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:53,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:53,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:53,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:53,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:53,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:53,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:53,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:53,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:53,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:53,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:53,024 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:53,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:53,043 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 22:46:53,044 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 22:46:53,044 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 232127 states and 1484459 transitions. cyclomatic complexity: 1296544 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 22:46:53,859 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 22:47:08,337 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 232127 states and 1484459 transitions. cyclomatic complexity: 1296544. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 854314 states and 5505619 transitions. Complement of second has 7 states. [2025-02-17 22:47:08,338 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 22:47:08,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 22:47:08,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 217 transitions. [2025-02-17 22:47:08,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 217 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:47:08,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:08,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 217 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:47:08,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:08,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 217 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:47:08,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:08,339 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 854314 states and 5505619 transitions. [2025-02-17 22:47:31,202 INFO L131 ngComponentsAnalysis]: Automaton has 18188 accepting balls. 43636