/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/interleaved4.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:46:56,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:46:56,133 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:46:56,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:46:56,136 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:46:56,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:46:56,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:46:56,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:46:56,160 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:46:56,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:46:56,160 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:46:56,160 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:46:56,160 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:46:56,160 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:46:56,160 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:46:56,160 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:46:56,160 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:46:56,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:46:56,162 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:46:56,163 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:46:56,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:46:56,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:46:56,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:46:56,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:46:56,163 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:46:56,163 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:46:56,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:46:56,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:46:56,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:46:56,404 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:46:56,404 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:46:56,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/interleaved4.c.bpl [2025-02-17 22:46:56,408 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/interleaved4.c.bpl' [2025-02-17 22:46:56,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:46:56,427 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:46:56,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:46:56,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:46:56,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:46:56,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,448 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:46:56,450 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:46:56,451 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:46:56,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:46:56,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:46:56,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,461 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:46:56,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:46:56,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:46:56,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:46:56,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/1) ... [2025-02-17 22:46:56,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:56,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:56,501 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 22:46:56,506 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 22:46:56,525 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:46:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:46:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:46:56,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:46:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:46:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:46:56,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:46:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:46:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:46:56,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:46:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:46:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:46:56,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:46:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:46:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:46:56,527 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 22:46:56,568 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:46:56,570 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:46:56,655 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:46:56,655 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:46:56,674 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:46:56,674 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:46:56,675 INFO L201 PluginConnector]: Adding new model interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:46:56 BoogieIcfgContainer [2025-02-17 22:46:56,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:46:56,677 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:46:56,677 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:46:56,683 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:46:56,683 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:46:56,683 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:56" (1/2) ... [2025-02-17 22:46:56,684 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a351e73 and model type interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:46:56, skipping insertion in model container [2025-02-17 22:46:56,684 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:46:56,684 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:46:56" (2/2) ... [2025-02-17 22:46:56,685 INFO L363 chiAutomizerObserver]: Analyzing ICFG interleaved4.c.bpl [2025-02-17 22:46:56,742 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:46:56,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:46:56,792 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-17 22:46:56,793 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:46:56,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 86 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-17 22:46:56,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 42 transitions, 112 flow [2025-02-17 22:46:56,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2025-02-17 22:46:56,808 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:46:56,808 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:46:56,808 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:46:56,808 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:46:56,808 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:46:56,809 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:46:56,809 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:46:56,809 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:46:56,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:46:57,019 INFO L131 ngComponentsAnalysis]: Automaton has 115 accepting balls. 1768 [2025-02-17 22:46:57,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:57,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:57,023 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:46:57,023 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:46:57,023 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:46:57,024 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 1815 states, but on-demand construction may add more states [2025-02-17 22:46:57,065 INFO L131 ngComponentsAnalysis]: Automaton has 115 accepting balls. 1768 [2025-02-17 22:46:57,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:57,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:57,066 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:46:57,066 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:46:57,070 INFO L752 eck$LassoCheckResult]: Stem: "[83] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[123] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" [2025-02-17 22:46:57,071 INFO L754 eck$LassoCheckResult]: Loop: "[89] L33-1-->L31: 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[]" "[91] L31-->L32: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" "[92] L32-->L33: Formula: (= v_f2_1 1) InVars {} OutVars{f2=v_f2_1} AuxVars[] AssignedVars[f2]" "[93] L33-->L33-1: Formula: (and (< 0 v_f1_6) (= v_f1_5 0)) InVars {f1=v_f1_6} OutVars{f1=v_f1_5} AuxVars[] AssignedVars[f1]" [2025-02-17 22:46:57,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:57,077 INFO L85 PathProgramCache]: Analyzing trace with hash 3657, now seen corresponding path program 1 times [2025-02-17 22:46:57,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:57,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549558001] [2025-02-17 22:46:57,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:57,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:57,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:57,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:57,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:57,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:57,134 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:57,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:57,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:57,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:57,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:57,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:57,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:57,151 INFO L85 PathProgramCache]: Analyzing trace with hash 3665316, now seen corresponding path program 1 times [2025-02-17 22:46:57,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:57,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059674831] [2025-02-17 22:46:57,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:57,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:57,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:57,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:57,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:57,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:57,158 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:57,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:57,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:57,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:57,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:57,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:57,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash -914909204, now seen corresponding path program 1 times [2025-02-17 22:46:57,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:57,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544333034] [2025-02-17 22:46:57,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:57,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:46:57,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:46:57,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:57,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:57,219 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 22:46:57,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:46:57,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544333034] [2025-02-17 22:46:57,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544333034] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:46:57,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:46:57,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-17 22:46:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502714321] [2025-02-17 22:46:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:46:57,321 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:57,322 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:57,322 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:57,323 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:57,323 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:57,323 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:57,323 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:57,323 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:57,323 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:46:57,323 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:57,323 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:57,334 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:57,345 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:57,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:57,412 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:57,412 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:57,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:57,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:57,423 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 22:46:57,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:57,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:57,434 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 22:46:57,462 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:46:57,463 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2=1} Honda state: {f2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:46:57,469 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 22:46:57,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:57,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:57,474 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 22:46:57,478 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 22:46:57,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:57,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:57,498 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 22:46:57,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:57,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:57,501 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 22:46:57,502 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 22:46:57,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:57,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:57,532 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:57,536 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 22:46:57,536 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:57,536 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:57,536 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:57,536 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:57,536 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:57,537 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:57,537 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:57,537 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:57,537 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:46:57,537 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:57,537 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:57,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:57,546 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:57,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:57,595 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:57,598 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:57,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:57,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:57,602 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 22:46:57,603 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 22:46:57,604 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 22:46:57,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:57,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:57,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:57,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:57,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:57,622 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:57,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:57,625 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:57,630 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:46:57,630 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:57,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:57,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:57,640 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 22:46:57,644 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 22:46:57,645 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:57,645 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:57,645 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:57,646 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f1) = 1*f1 Supporting invariants [] [2025-02-17 22:46:57,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:57,655 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:57,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:57,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:57,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:57,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:57,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:57,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:57,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:57,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:57,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:57,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:57,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:57,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:57,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:57,711 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 22:46:57,729 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2025-02-17 22:46:57,731 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states 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 22:46:57,904 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 1815 states, but on-demand construction may add more states. 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 6254 states and 26052 transitions. Complement of second has 5 states. [2025-02-17 22:46:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:57,908 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 22:46:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-02-17 22:46:57,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 55 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:46:57,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:57,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 55 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:46:57,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:57,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 55 transitions. Stem has 2 letters. Loop has 8 letters. [2025-02-17 22:46:57,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:57,918 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6254 states and 26052 transitions. [2025-02-17 22:46:58,028 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 22:46:58,040 INFO L131 ngComponentsAnalysis]: Automaton has 342 accepting balls. 3108 [2025-02-17 22:46:58,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6254 states to 5316 states and 22214 transitions. [2025-02-17 22:46:58,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3274 [2025-02-17 22:46:58,133 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4062 [2025-02-17 22:46:58,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5316 states and 22214 transitions. [2025-02-17 22:46:58,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:58,134 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5316 states and 22214 transitions. [2025-02-17 22:46:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5316 states and 22214 transitions. [2025-02-17 22:46:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5316 to 3870. [2025-02-17 22:46:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 3870 states have (on average 4.231007751937985) internal successors, (16374), 3869 states have internal predecessors, (16374), 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 22:46:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 16374 transitions. [2025-02-17 22:46:58,333 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3870 states and 16374 transitions. [2025-02-17 22:46:58,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:46:58,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:46:58,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:46:58,336 INFO L87 Difference]: Start difference. First operand 3870 states and 16374 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 22:46:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:46:58,401 INFO L93 Difference]: Finished difference Result 5143 states and 19756 transitions. [2025-02-17 22:46:58,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5143 states and 19756 transitions. [2025-02-17 22:46:58,490 INFO L131 ngComponentsAnalysis]: Automaton has 404 accepting balls. 3908 [2025-02-17 22:46:58,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5143 states to 4076 states and 15919 transitions. [2025-02-17 22:46:58,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4076 [2025-02-17 22:46:58,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4076 [2025-02-17 22:46:58,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4076 states and 15919 transitions. [2025-02-17 22:46:58,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:46:58,607 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4076 states and 15919 transitions. [2025-02-17 22:46:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states and 15919 transitions. [2025-02-17 22:46:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 2584. [2025-02-17 22:46:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2584 states have (on average 3.946981424148607) internal successors, (10199), 2583 states have internal predecessors, (10199), 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 22:46:58,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 10199 transitions. [2025-02-17 22:46:58,793 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2584 states and 10199 transitions. [2025-02-17 22:46:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:46:58,794 INFO L432 stractBuchiCegarLoop]: Abstraction has 2584 states and 10199 transitions. [2025-02-17 22:46:58,794 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:46:58,794 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2584 states and 10199 transitions. [2025-02-17 22:46:58,832 INFO L131 ngComponentsAnalysis]: Automaton has 188 accepting balls. 2540 [2025-02-17 22:46:58,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:58,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:58,833 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:46:58,833 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:46:58,833 INFO L752 eck$LassoCheckResult]: Stem: "[83] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[123] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" "[114] L16-1-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" [2025-02-17 22:46:58,833 INFO L754 eck$LassoCheckResult]: Loop: "[95] L44-->L46: Formula: (< v_x2_2 v_z_4) InVars {x2=v_x2_2, z=v_z_4} OutVars{x2=v_x2_2, z=v_z_4} AuxVars[] AssignedVars[]" "[97] L46-->L46-1: Formula: (and (< 0 v_f2_6) (= v_f2_5 0)) InVars {f2=v_f2_6} OutVars{f2=v_f2_5} AuxVars[] AssignedVars[f2]" "[98] L46-1-->L52: Formula: (= v_x2_3 (+ v_x2_4 1)) InVars {x2=v_x2_4} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[x2]" "[99] L52-->L44: Formula: (= v_f3_1 1) InVars {} OutVars{f3=v_f3_1} AuxVars[] AssignedVars[f3]" [2025-02-17 22:46:58,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:58,834 INFO L85 PathProgramCache]: Analyzing trace with hash 113481, now seen corresponding path program 1 times [2025-02-17 22:46:58,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:58,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688067015] [2025-02-17 22:46:58,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:58,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:58,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:58,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:58,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:58,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:58,839 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:58,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:58,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:58,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:58,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:58,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:58,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:58,843 INFO L85 PathProgramCache]: Analyzing trace with hash 3850020, now seen corresponding path program 1 times [2025-02-17 22:46:58,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:58,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554888429] [2025-02-17 22:46:58,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:58,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:58,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:58,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:58,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:58,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:58,847 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:58,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:58,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:58,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:58,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:58,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:58,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1725797996, now seen corresponding path program 1 times [2025-02-17 22:46:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:58,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195307504] [2025-02-17 22:46:58,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:58,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:58,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:46:58,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:46:58,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:58,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:58,874 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 22:46:58,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:46:58,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195307504] [2025-02-17 22:46:58,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195307504] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:46:58,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:46:58,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:46:58,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060168694] [2025-02-17 22:46:58,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:46:58,918 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:58,918 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:58,918 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:58,918 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:58,918 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:58,918 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:58,918 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:58,918 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:58,918 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:46:58,918 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:58,918 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:58,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:58,926 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:58,929 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:58,962 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:58,962 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:58,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:58,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:58,965 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 22:46:58,966 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 22:46:58,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:58,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:58,985 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 22:46:58,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:58,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:58,989 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 22:46:58,991 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 22:46:58,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:58,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:59,057 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:59,062 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 22:46:59,062 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:59,062 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:59,062 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:59,062 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:59,062 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:59,062 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:59,063 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:59,063 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:59,063 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:46:59,063 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:59,063 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:59,063 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:59,069 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:59,074 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:59,104 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:59,104 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:59,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:59,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:59,106 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 22:46:59,108 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 22:46:59,109 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 22:46:59,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:59,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:59,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:59,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:59,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:59,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:59,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:59,122 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:59,125 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:59,126 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:59,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:59,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:59,128 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 22:46:59,130 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 22:46:59,131 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:59,131 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:59,131 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:59,131 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-02-17 22:46:59,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:59,138 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:59,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:59,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:59,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:59,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:59,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:59,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:59,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:59,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:59,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:59,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:59,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:59,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:59,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:59,209 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 22:46:59,210 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:46:59,210 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2584 states and 10199 transitions. cyclomatic complexity: 7803 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 22:46:59,366 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2584 states and 10199 transitions. cyclomatic complexity: 7803. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 6486 states and 27354 transitions. Complement of second has 6 states. [2025-02-17 22:46:59,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 22:46:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-02-17 22:46:59,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:46:59,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:59,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 7 letters. Loop has 4 letters. [2025-02-17 22:46:59,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:59,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 82 transitions. Stem has 3 letters. Loop has 8 letters. [2025-02-17 22:46:59,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:59,369 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6486 states and 27354 transitions. [2025-02-17 22:46:59,494 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 22:46:59,504 INFO L131 ngComponentsAnalysis]: Automaton has 246 accepting balls. 2292 [2025-02-17 22:46:59,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6486 states to 5178 states and 22050 transitions. [2025-02-17 22:46:59,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2410 [2025-02-17 22:46:59,567 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3209 [2025-02-17 22:46:59,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5178 states and 22050 transitions. [2025-02-17 22:46:59,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:59,568 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5178 states and 22050 transitions. [2025-02-17 22:46:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states and 22050 transitions. [2025-02-17 22:46:59,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 4382. [2025-02-17 22:46:59,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4382 states have (on average 4.224326791419443) internal successors, (18511), 4381 states have internal predecessors, (18511), 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 22:46:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 18511 transitions. [2025-02-17 22:46:59,679 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4382 states and 18511 transitions. [2025-02-17 22:46:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:46:59,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:46:59,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:46:59,679 INFO L87 Difference]: Start difference. First operand 4382 states and 18511 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 22:46:59,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:46:59,816 INFO L93 Difference]: Finished difference Result 8155 states and 33711 transitions. [2025-02-17 22:46:59,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8155 states and 33711 transitions. [2025-02-17 22:46:59,883 INFO L131 ngComponentsAnalysis]: Automaton has 600 accepting balls. 4224 [2025-02-17 22:46:59,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8155 states to 7815 states and 31956 transitions. [2025-02-17 22:46:59,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4518 [2025-02-17 22:46:59,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4622 [2025-02-17 22:46:59,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7815 states and 31956 transitions. [2025-02-17 22:46:59,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:59,956 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7815 states and 31956 transitions. [2025-02-17 22:46:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states and 31956 transitions. [2025-02-17 22:47:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6603. [2025-02-17 22:47:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6603 states, 6603 states have (on average 4.228381038921702) internal successors, (27920), 6602 states have internal predecessors, (27920), 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 22:47:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6603 states to 6603 states and 27920 transitions. [2025-02-17 22:47:00,325 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6603 states and 27920 transitions. [2025-02-17 22:47:00,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:47:00,329 INFO L432 stractBuchiCegarLoop]: Abstraction has 6603 states and 27920 transitions. [2025-02-17 22:47:00,329 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:47:00,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6603 states and 27920 transitions. [2025-02-17 22:47:00,379 INFO L131 ngComponentsAnalysis]: Automaton has 415 accepting balls. 3220 [2025-02-17 22:47:00,380 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:00,380 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:00,380 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:47:00,380 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:47:00,381 INFO L752 eck$LassoCheckResult]: Stem: "[83] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[123] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" "[114] L16-1-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[117] L17-->L59: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_2) (= 3 v_thread3Thread1of1ForFork1_thidvar0_2) (= 3 v_thread3Thread1of1ForFork1_thidvar1_2)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_2, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_2, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" [2025-02-17 22:47:00,381 INFO L754 eck$LassoCheckResult]: Loop: "[101] L59-->L61: Formula: (< v_x3_1 v_z_5) InVars {x3=v_x3_1, z=v_z_5} OutVars{x3=v_x3_1, z=v_z_5} AuxVars[] AssignedVars[]" "[103] L61-->L61-1: Formula: (and (< 0 v_f3_6) (= v_f3_5 0)) InVars {f3=v_f3_6} OutVars{f3=v_f3_5} AuxVars[] AssignedVars[f3]" "[104] L61-1-->L67: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" "[105] L67-->L59: Formula: (= v_f4_1 1) InVars {} OutVars{f4=v_f4_1} AuxVars[] AssignedVars[f4]" [2025-02-17 22:47:00,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:00,382 INFO L85 PathProgramCache]: Analyzing trace with hash 3518028, now seen corresponding path program 1 times [2025-02-17 22:47:00,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:00,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262470487] [2025-02-17 22:47:00,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:00,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:00,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:00,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:00,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:00,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:00,389 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:00,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:00,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:00,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:00,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:00,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:00,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:00,394 INFO L85 PathProgramCache]: Analyzing trace with hash 4034724, now seen corresponding path program 1 times [2025-02-17 22:47:00,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637892288] [2025-02-17 22:47:00,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:00,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:00,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:00,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:00,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:00,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:00,402 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:00,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:00,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:00,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:00,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:00,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:00,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:00,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1980572015, now seen corresponding path program 1 times [2025-02-17 22:47:00,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:00,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435991283] [2025-02-17 22:47:00,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:00,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:00,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:47:00,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:47:00,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:00,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:00,426 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 22:47:00,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:47:00,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435991283] [2025-02-17 22:47:00,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435991283] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:47:00,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:47:00,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:47:00,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768826687] [2025-02-17 22:47:00,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:47:00,456 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:00,456 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:00,456 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:00,456 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:00,456 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:00,456 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:00,456 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:00,456 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:00,456 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:00,456 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:00,456 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:00,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:00,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:00,462 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:00,493 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:00,493 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:00,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:00,496 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 22:47:00,497 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 22:47:00,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:00,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:00,535 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:47:00,535 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f4=1} Honda state: {f4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:47:00,547 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 22:47:00,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:00,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:00,549 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 22:47:00,550 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 22:47:00,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:00,551 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:00,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:47:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:00,570 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 22:47:00,571 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 22:47:00,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:00,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:00,595 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:00,599 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 22:47:00,599 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:00,599 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:00,599 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:00,599 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:00,599 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:00,599 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:00,599 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:00,599 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:00,599 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:47:00,599 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:00,599 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:00,601 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:00,607 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:00,611 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:00,638 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:00,638 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:00,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:00,641 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 22:47:00,644 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 22:47:00,644 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 22:47:00,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:00,655 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:00,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:00,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:00,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:00,655 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:00,655 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:00,657 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:47:00,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:47:00,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:00,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:00,667 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 22:47:00,668 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 22:47:00,669 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 22:47:00,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:00,679 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:00,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:00,679 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:00,679 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:00,680 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:00,680 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:00,684 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:00,686 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:00,686 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:47:00,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:00,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:00,688 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 22:47:00,690 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 22:47:00,691 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:00,691 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:00,691 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:00,691 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f3) = 1*f3 Supporting invariants [] [2025-02-17 22:47:00,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-17 22:47:00,697 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:00,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:00,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:00,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:00,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:00,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:00,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:00,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:00,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:00,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:00,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:00,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:00,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:00,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:00,750 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 22:47:00,750 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 22:47:00,751 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6603 states and 27920 transitions. cyclomatic complexity: 21944 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 22:47:00,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-17 22:47:01,027 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6603 states and 27920 transitions. cyclomatic complexity: 21944. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 22947 states and 96339 transitions. Complement of second has 5 states. [2025-02-17 22:47:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 22:47:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2025-02-17 22:47:01,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:47:01,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:01,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 8 letters. Loop has 4 letters. [2025-02-17 22:47:01,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:01,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 4 letters. Loop has 8 letters. [2025-02-17 22:47:01,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:01,028 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22947 states and 96339 transitions. [2025-02-17 22:47:01,272 INFO L131 ngComponentsAnalysis]: Automaton has 668 accepting balls. 5240 [2025-02-17 22:47:01,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22947 states to 19383 states and 82285 transitions. [2025-02-17 22:47:01,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6675 [2025-02-17 22:47:01,505 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8019 [2025-02-17 22:47:01,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19383 states and 82285 transitions. [2025-02-17 22:47:01,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:01,506 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19383 states and 82285 transitions. [2025-02-17 22:47:01,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19383 states and 82285 transitions. [2025-02-17 22:47:01,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19383 to 16607. [2025-02-17 22:47:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16607 states, 16607 states have (on average 4.316071536099235) internal successors, (71677), 16606 states have internal predecessors, (71677), 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 22:47:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16607 states to 16607 states and 71677 transitions. [2025-02-17 22:47:02,218 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16607 states and 71677 transitions. [2025-02-17 22:47:02,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:47:02,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:47:02,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:47:02,219 INFO L87 Difference]: Start difference. First operand 16607 states and 71677 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 22:47:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:47:02,419 INFO L93 Difference]: Finished difference Result 27131 states and 112702 transitions. [2025-02-17 22:47:02,419 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27131 states and 112702 transitions. [2025-02-17 22:47:02,778 INFO L131 ngComponentsAnalysis]: Automaton has 830 accepting balls. 6344 [2025-02-17 22:47:03,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27131 states to 17142 states and 70747 transitions. [2025-02-17 22:47:03,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7682 [2025-02-17 22:47:03,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8086 [2025-02-17 22:47:03,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17142 states and 70747 transitions. [2025-02-17 22:47:03,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:03,087 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17142 states and 70747 transitions. [2025-02-17 22:47:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17142 states and 70747 transitions. [2025-02-17 22:47:03,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17142 to 9932. [2025-02-17 22:47:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9932 states, 9932 states have (on average 4.152033830044301) internal successors, (41238), 9931 states have internal predecessors, (41238), 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 22:47:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9932 states to 9932 states and 41238 transitions. [2025-02-17 22:47:03,475 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9932 states and 41238 transitions. [2025-02-17 22:47:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:47:03,480 INFO L432 stractBuchiCegarLoop]: Abstraction has 9932 states and 41238 transitions. [2025-02-17 22:47:03,480 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:47:03,480 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9932 states and 41238 transitions. [2025-02-17 22:47:03,555 INFO L131 ngComponentsAnalysis]: Automaton has 461 accepting balls. 3524 [2025-02-17 22:47:03,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:03,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:03,556 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:47:03,556 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-17 22:47:03,559 INFO L752 eck$LassoCheckResult]: Stem: "[83] $Ultimate##0-->L16: Formula: (and (= v_f3_4 0) (= v_f2_4 0) (= v_f1_3 0) (= v_x3_5 0) (= v_x1_5 0) (= v_x4_1 0) (= v_f4_2 0) (= v_x2_5 0)) InVars {f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} OutVars{f4=v_f4_2, f2=v_f2_4, x4=v_x4_1, f3=v_f3_4, x2=v_x2_5, f1=v_f1_3, x3=v_x3_5, x1=v_x1_5} AuxVars[] AssignedVars[]" "[123] L16-->L33-1: Formula: (= v_thread1Thread1of1ForFork3_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork3_thidvar0=v_thread1Thread1of1ForFork3_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork3_thidvar0]" "[114] L16-1-->L44: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0]" "[117] L17-->L59: Formula: (and (= 3 v_thread3Thread1of1ForFork1_thidvar2_2) (= 3 v_thread3Thread1of1ForFork1_thidvar0_2) (= 3 v_thread3Thread1of1ForFork1_thidvar1_2)) InVars {} OutVars{thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_2, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_2, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_thidvar0, thread3Thread1of1ForFork1_thidvar1, thread3Thread1of1ForFork1_thidvar2]" "[120] L18-->L74: Formula: (and (= 4 v_thread4Thread1of1ForFork2_thidvar2_2) (= 4 v_thread4Thread1of1ForFork2_thidvar3_2) (= 4 v_thread4Thread1of1ForFork2_thidvar1_2) (= 4 v_thread4Thread1of1ForFork2_thidvar0_2)) InVars {} OutVars{thread4Thread1of1ForFork2_thidvar3=v_thread4Thread1of1ForFork2_thidvar3_2, thread4Thread1of1ForFork2_thidvar0=v_thread4Thread1of1ForFork2_thidvar0_2, thread4Thread1of1ForFork2_thidvar2=v_thread4Thread1of1ForFork2_thidvar2_2, thread4Thread1of1ForFork2_thidvar1=v_thread4Thread1of1ForFork2_thidvar1_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork2_thidvar3, thread4Thread1of1ForFork2_thidvar0, thread4Thread1of1ForFork2_thidvar2, thread4Thread1of1ForFork2_thidvar1]" "[88] L33-1-->thread1FINAL: 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[]" [2025-02-17 22:47:03,559 INFO L754 eck$LassoCheckResult]: Loop: "[107] L74-->L76: Formula: (< v_x4_3 v_z_8) InVars {x4=v_x4_3, z=v_z_8} OutVars{x4=v_x4_3, z=v_z_8} AuxVars[] AssignedVars[]" "[109] L76-->L76-1: Formula: (and (< 0 v_f4_6) (= v_f4_5 0)) InVars {f4=v_f4_6} OutVars{f4=v_f4_5} AuxVars[] AssignedVars[f4]" "[110] L76-1-->L82: Formula: (= v_x4_4 (+ v_x4_5 1)) InVars {x4=v_x4_5} OutVars{x4=v_x4_4} AuxVars[] AssignedVars[x4]" "[111] L82-->L74: Formula: (= v_f1_4 1) InVars {} OutVars{f1=v_f1_4} AuxVars[] AssignedVars[f1]" [2025-02-17 22:47:03,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash -914138580, now seen corresponding path program 1 times [2025-02-17 22:47:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:03,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374738687] [2025-02-17 22:47:03,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:03,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:03,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:03,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:03,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:03,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:03,572 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:03,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:03,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:03,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:03,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:03,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:03,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash 4219428, now seen corresponding path program 1 times [2025-02-17 22:47:03,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:03,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327942687] [2025-02-17 22:47:03,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:03,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:03,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:03,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:03,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:03,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:03,586 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:03,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:03,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:03,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:03,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:03,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:03,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:03,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1189392079, now seen corresponding path program 1 times [2025-02-17 22:47:03,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:03,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761671017] [2025-02-17 22:47:03,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:03,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:03,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-17 22:47:03,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-17 22:47:03,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:03,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:03,621 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 22:47:03,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:47:03,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761671017] [2025-02-17 22:47:03,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761671017] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:47:03,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:47:03,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:47:03,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227414270] [2025-02-17 22:47:03,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:47:03,651 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:03,651 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:03,651 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:03,651 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:03,651 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:03,651 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:03,651 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:03,651 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:03,651 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:03,651 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:03,651 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:03,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:03,655 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:03,660 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:03,696 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:03,696 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:03,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:03,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:03,698 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:03,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-17 22:47:03,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:03,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:03,711 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:47:03,711 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f1=1} Honda state: {f1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-17 22:47:03,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:47:03,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:03,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:03,718 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:47:03,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-17 22:47:03,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:03,720 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:03,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-02-17 22:47:03,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:03,738 INFO L229 MonitoredProcess]: Starting monitored process 19 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 22:47:03,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-17 22:47:03,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:03,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:03,901 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:03,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-02-17 22:47:03,905 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:03,905 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:03,905 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:03,906 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:03,906 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:03,906 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:03,906 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:03,906 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:03,906 INFO L132 ssoRankerPreferences]: Filename of dumped script: interleaved4.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:47:03,906 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:03,906 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:03,906 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:03,912 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:03,922 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:03,952 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:03,952 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:03,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:03,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:03,954 INFO L229 MonitoredProcess]: Starting monitored process 20 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 22:47:03,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-17 22:47:03,957 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 22:47:03,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:03,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:03,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:03,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:03,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:03,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:03,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:03,969 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:47:03,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:03,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:03,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:03,977 INFO L229 MonitoredProcess]: Starting monitored process 21 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 22:47:03,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-17 22:47:03,979 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 22:47:03,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:03,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:03,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:03,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:03,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:03,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:03,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:03,993 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:03,996 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:03,996 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:03,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:03,998 INFO L229 MonitoredProcess]: Starting monitored process 22 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 22:47:03,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-17 22:47:04,002 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:04,002 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:04,002 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:04,002 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:47:04,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:04,008 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:04,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:04,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:04,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:04,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:04,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:04,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:04,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:04,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:47:04,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:47:04,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:04,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:04,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:04,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:04,080 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 22:47:04,080 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:47:04,083 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9932 states and 41238 transitions. cyclomatic complexity: 32082 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:47:04,250 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9932 states and 41238 transitions. cyclomatic complexity: 32082. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 17413 states and 72758 transitions. Complement of second has 6 states. [2025-02-17 22:47:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:47:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:47:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2025-02-17 22:47:04,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 90 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:47:04,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:04,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 90 transitions. Stem has 10 letters. Loop has 4 letters. [2025-02-17 22:47:04,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:04,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 90 transitions. Stem has 6 letters. Loop has 8 letters. [2025-02-17 22:47:04,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:04,252 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17413 states and 72758 transitions. [2025-02-17 22:47:04,408 INFO L131 ngComponentsAnalysis]: Automaton has 180 accepting balls. 2400 [2025-02-17 22:47:04,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17413 states to 7630 states and 30972 transitions. [2025-02-17 22:47:04,475 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3136 [2025-02-17 22:47:04,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3136 [2025-02-17 22:47:04,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7630 states and 30972 transitions. [2025-02-17 22:47:04,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:04,483 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7630 states and 30972 transitions. [2025-02-17 22:47:04,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7630 states and 30972 transitions. [2025-02-17 22:47:04,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7630 to 7630. [2025-02-17 22:47:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7630 states, 7630 states have (on average 4.059239842726082) internal successors, (30972), 7629 states have internal predecessors, (30972), 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 22:47:04,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-02-17 22:47:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7630 states to 7630 states and 30972 transitions. [2025-02-17 22:47:04,787 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7630 states and 30972 transitions. [2025-02-17 22:47:04,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:47:04,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:47:04,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:47:04,789 INFO L87 Difference]: Start difference. First operand 7630 states and 30972 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 22:47:04,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:47:04,801 INFO L93 Difference]: Finished difference Result 715 states and 1933 transitions. [2025-02-17 22:47:04,801 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 715 states and 1933 transitions. [2025-02-17 22:47:04,804 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:47:04,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 715 states to 0 states and 0 transitions. [2025-02-17 22:47:04,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:47:04,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:47:04,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:47:04,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:47:04,804 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:04,804 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:04,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:47:04,806 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:47:04,806 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:47:04,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:47:04,806 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:47:04,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:47:04,816 INFO L201 PluginConnector]: Adding new model interleaved4.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:47:04 BoogieIcfgContainer [2025-02-17 22:47:04,816 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:47:04,816 INFO L158 Benchmark]: Toolchain (without parser) took 8389.38ms. Allocated memory was 159.4MB in the beginning and 1.0GB in the end (delta: 889.2MB). Free memory was 87.5MB in the beginning and 597.7MB in the end (delta: -510.2MB). Peak memory consumption was 377.4MB. Max. memory is 8.0GB. [2025-02-17 22:47:04,817 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.77ms. Allocated memory is still 159.4MB. Free memory was 88.6MB in the beginning and 88.4MB in the end (delta: 199.4kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:04,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.35ms. Allocated memory is still 159.4MB. Free memory was 87.5MB in the beginning and 86.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:04,818 INFO L158 Benchmark]: Boogie Preprocessor took 18.41ms. Allocated memory is still 159.4MB. Free memory was 86.3MB in the beginning and 85.6MB in the end (delta: 641.2kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:47:04,818 INFO L158 Benchmark]: RCFGBuilder took 204.97ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 75.5MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:47:04,819 INFO L158 Benchmark]: BuchiAutomizer took 8138.87ms. Allocated memory was 159.4MB in the beginning and 1.0GB in the end (delta: 889.2MB). Free memory was 75.5MB in the beginning and 597.7MB in the end (delta: -522.2MB). Peak memory consumption was 369.0MB. Max. memory is 8.0GB. [2025-02-17 22:47:04,820 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 0.77ms. Allocated memory is still 159.4MB. Free memory was 88.6MB in the beginning and 88.4MB in the end (delta: 199.4kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.35ms. Allocated memory is still 159.4MB. Free memory was 87.5MB in the beginning and 86.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 18.41ms. Allocated memory is still 159.4MB. Free memory was 86.3MB in the beginning and 85.6MB in the end (delta: 641.2kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 204.97ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 75.5MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 8138.87ms. Allocated memory was 159.4MB in the beginning and 1.0GB in the end (delta: 889.2MB). Free memory was 75.5MB in the beginning and 597.7MB in the end (delta: -522.2MB). Peak memory consumption was 369.0MB. 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 8 terminating modules (4 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function f1 and consists of 3 locations. One deterministic module has affine ranking function z + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function f3 and consists of 3 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.0s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.1s. Büchi inclusion checks took 3.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 2.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 14932 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 1.9s Buchi closure took 0.1s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 290 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 286 mSDsluCounter, 349 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 261 IncrementalHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 192 mSDtfsCounter, 261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 47ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:47:04,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...