/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 ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:23:39,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:23:39,331 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:23:39,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:23:39,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:23:39,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:23:39,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:23:39,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:23:39,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:23:39,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:23:39,359 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:23:39,359 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:23:39,359 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:23:39,359 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:23:39,359 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:23:39,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:23:39,360 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:23:39,361 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:23:39,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:23:39,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:23:39,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:23:39,361 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:23:39,361 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:23:39,361 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:23:39,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:23:39,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:23:39,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:23:39,571 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:23:39,571 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:23:39,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure3.wvr.bpl [2025-04-26 16:23:39,572 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure3.wvr.bpl' [2025-04-26 16:23:39,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:23:39,591 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:23:39,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:23:39,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:23:39,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:23:39,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,624 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:23:39,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:23:39,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:23:39,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:23:39,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:23:39,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,632 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:23:39,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:23:39,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:23:39,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:23:39,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/1) ... [2025-04-26 16:23:39,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:39,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:39,670 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) [2025-04-26 16:23:39,676 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 [2025-04-26 16:23:39,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:23:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:23:39,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:23:39,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:23:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:23:39,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:23:39,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:23:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:23:39,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:23:39,695 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:23:39,736 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:23:39,737 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:23:39,805 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:23:39,805 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:23:39,820 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:23:39,820 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:23:39,821 INFO L201 PluginConnector]: Adding new model figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:23:39 BoogieIcfgContainer [2025-04-26 16:23:39,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:23:39,822 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:23:39,822 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:23:39,826 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:23:39,826 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:23:39,826 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:23:39" (1/2) ... [2025-04-26 16:23:39,827 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3499e593 and model type figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:23:39, skipping insertion in model container [2025-04-26 16:23:39,827 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:23:39,827 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:23:39" (2/2) ... [2025-04-26 16:23:39,828 INFO L376 chiAutomizerObserver]: Analyzing ICFG figure3.wvr.bpl [2025-04-26 16:23:39,859 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-26 16:23:39,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 25 transitions, 64 flow [2025-04-26 16:23:39,909 INFO L116 PetriNetUnfolderBase]: 2/21 cut-off events. [2025-04-26 16:23:39,911 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-26 16:23:39,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2025-04-26 16:23:39,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 25 transitions, 64 flow [2025-04-26 16:23:39,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2025-04-26 16:23:39,920 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 26 places, 21 transitions, 54 flow [2025-04-26 16:23:39,928 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:23:39,929 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:23:39,929 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:23:39,929 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:23:39,929 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:23:39,929 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:23:39,929 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:23:39,929 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:23:39,930 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:23:39,949 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 16 [2025-04-26 16:23:39,949 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:23:39,949 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:23:39,953 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 16:23:39,953 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:23:39,953 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:23:39,953 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 34 states, but on-demand construction may add more states [2025-04-26 16:23:39,955 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 16 [2025-04-26 16:23:39,955 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:23:39,955 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:23:39,956 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-04-26 16:23:39,956 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:23:39,961 INFO L752 eck$LassoCheckResult]: Stem: "[45] $Ultimate##0-->L43: Formula: (= v_i1_5 0) InVars {i1=v_i1_5} OutVars{i1=v_i1_5} AuxVars[] AssignedVars[]" "[38] L43-->L44: Formula: (= v_counter_6 0) InVars {counter=v_counter_6} OutVars{counter=v_counter_6} AuxVars[] AssignedVars[]" "[36] L44-->L45: Formula: (= v_i2_5 0) InVars {i2=v_i2_5} OutVars{i2=v_i2_5} AuxVars[] AssignedVars[]" "[47] L45-->L46: Formula: (= v_N2_3 v_N1_3) InVars {N2=v_N2_3, N1=v_N1_3} OutVars{N2=v_N2_3, N1=v_N1_3} AuxVars[] AssignedVars[]" "[46] L46-->L47: Formula: (< 0 v_C_3) InVars {C=v_C_3} OutVars{C=v_C_3} AuxVars[] AssignedVars[]" "[64] L47-->L20-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:23:39,961 INFO L754 eck$LassoCheckResult]: Loop: "[55] L20-1-->L20: Formula: (< v_i1_1 v_N1_1) InVars {i1=v_i1_1, N1=v_N1_1} OutVars{i1=v_i1_1, N1=v_N1_1} AuxVars[] AssignedVars[]" "[57] L20-->L20-1: Formula: (and (= v_i1_6 (+ v_i1_7 1)) (= v_counter_8 (+ v_counter_9 v_C_4))) InVars {i1=v_i1_7, counter=v_counter_9, C=v_C_4} OutVars{i1=v_i1_6, counter=v_counter_8, C=v_C_4} AuxVars[] AssignedVars[counter, i1]" [2025-04-26 16:23:39,965 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2082938889, now seen corresponding path program 1 times [2025-04-26 16:23:39,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:39,970 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534351595] [2025-04-26 16:23:39,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:39,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:40,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:23:40,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:23:40,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,016 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:40,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:23:40,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:23:40,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:40,042 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2723, now seen corresponding path program 1 times [2025-04-26 16:23:40,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:40,042 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127123967] [2025-04-26 16:23:40,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:40,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:40,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:23:40,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:23:40,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,051 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:40,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:23:40,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:23:40,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:40,057 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:40,057 INFO L85 PathProgramCache]: Analyzing trace with hash -249510631, now seen corresponding path program 1 times [2025-04-26 16:23:40,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:40,057 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524467591] [2025-04-26 16:23:40,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:40,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:40,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:23:40,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:23:40,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,063 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:40,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:23:40,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:23:40,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:40,134 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:23:40,134 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:23:40,135 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:23:40,135 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:23:40,135 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:23:40,135 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,135 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:23:40,135 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:23:40,135 INFO L132 ssoRankerPreferences]: Filename of dumped script: figure3.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 16:23:40,135 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:23:40,135 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:23:40,145 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:40,157 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:40,212 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:23:40,213 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:23:40,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:40,217 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) [2025-04-26 16:23:40,219 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 [2025-04-26 16:23:40,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:23:40,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:40,239 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:23:40,240 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {counter=0, C=0} Honda state: {counter=0, C=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:23:40,247 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 [2025-04-26 16:23:40,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:40,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:23:40,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-04-26 16:23:40,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:23:40,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:40,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:23:40,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:40,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:23:40,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-04-26 16:23:40,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:23:40,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:40,347 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:23:40,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-04-26 16:23:40,353 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:23:40,353 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:23:40,353 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:23:40,353 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:23:40,353 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:23:40,353 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,353 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:23:40,353 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:23:40,353 INFO L132 ssoRankerPreferences]: Filename of dumped script: figure3.wvr.bpl_petrified1_Iteration1_Loop [2025-04-26 16:23:40,353 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:23:40,354 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:23:40,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:40,381 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:40,416 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:23:40,419 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:23:40,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:40,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:23:40,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-04-26 16:23:40,426 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:23:40,437 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:23:40,437 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:23:40,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:23:40,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:23:40,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:23:40,443 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:23:40,444 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:23:40,446 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:23:40,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:23:40,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:40,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:23:40,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-04-26 16:23:40,458 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:23:40,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:23:40,470 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:23:40,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:23:40,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:23:40,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:23:40,472 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:23:40,472 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:23:40,474 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:23:40,480 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:23:40,481 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:23:40,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:40,484 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:23:40,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-04-26 16:23:40,486 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:23:40,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:23:40,490 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:23:40,491 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:23:40,491 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(N1, i1) = 1*N1 - 1*i1 Supporting invariants [] [2025-04-26 16:23:40,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-04-26 16:23:40,516 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:23:40,543 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:40,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:23:40,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:23:40,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:23:40,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:23:40,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:23:40,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:23:40,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:23:40,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:23:40,600 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:23:40,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:23:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:23:40,650 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:23:40,652 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 34 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:23:40,734 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 34 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 78 states and 159 transitions. Complement of second has 7 states. [2025-04-26 16:23:40,735 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:23:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (in total 8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:23:40,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2025-04-26 16:23:40,742 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:23:40,743 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:40,743 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 8 letters. Loop has 2 letters. [2025-04-26 16:23:40,743 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:40,743 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 6 letters. Loop has 4 letters. [2025-04-26 16:23:40,743 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:40,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 159 transitions. [2025-04-26 16:23:40,746 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2025-04-26 16:23:40,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 34 states and 70 transitions. [2025-04-26 16:23:40,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2025-04-26 16:23:40,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2025-04-26 16:23:40,749 INFO L74 IsDeterministic]: Start isDeterministic. Operand 34 states and 70 transitions. [2025-04-26 16:23:40,750 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:23:40,750 INFO L218 hiAutomatonCegarLoop]: Abstraction has 34 states and 70 transitions. [2025-04-26 16:23:40,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 70 transitions. [2025-04-26 16:23:40,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2025-04-26 16:23:40,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (in total 58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:23:40,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 58 transitions. [2025-04-26 16:23:40,764 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 58 transitions. [2025-04-26 16:23:40,764 INFO L438 stractBuchiCegarLoop]: Abstraction has 28 states and 58 transitions. [2025-04-26 16:23:40,764 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:23:40,764 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 58 transitions. [2025-04-26 16:23:40,765 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2025-04-26 16:23:40,765 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:23:40,765 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:23:40,765 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:23:40,765 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:23:40,766 INFO L752 eck$LassoCheckResult]: Stem: "[45] $Ultimate##0-->L43: Formula: (= v_i1_5 0) InVars {i1=v_i1_5} OutVars{i1=v_i1_5} AuxVars[] AssignedVars[]" "[38] L43-->L44: Formula: (= v_counter_6 0) InVars {counter=v_counter_6} OutVars{counter=v_counter_6} AuxVars[] AssignedVars[]" "[36] L44-->L45: Formula: (= v_i2_5 0) InVars {i2=v_i2_5} OutVars{i2=v_i2_5} AuxVars[] AssignedVars[]" "[47] L45-->L46: Formula: (= v_N2_3 v_N1_3) InVars {N2=v_N2_3, N1=v_N1_3} OutVars{N2=v_N2_3, N1=v_N1_3} AuxVars[] AssignedVars[]" "[46] L46-->L47: Formula: (< 0 v_C_3) InVars {C=v_C_3} OutVars{C=v_C_3} AuxVars[] AssignedVars[]" "[64] L47-->L20-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[67] L47-1-->L31-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:23:40,766 INFO L754 eck$LassoCheckResult]: Loop: "[59] L31-1-->L31: Formula: (< v_i2_1 v_N2_1) InVars {N2=v_N2_1, i2=v_i2_1} OutVars{N2=v_N2_1, i2=v_i2_1} AuxVars[] AssignedVars[]" "[61] L31-->L31-1: Formula: (and (= v_counter_17 (+ v_counter_16 v_C_8)) (= (+ v_i2_7 1) v_i2_6) (< 0 v_counter_17)) InVars {i2=v_i2_7, counter=v_counter_17, C=v_C_8} OutVars{i2=v_i2_6, counter=v_counter_16, C=v_C_8} AuxVars[] AssignedVars[counter, i2]" [2025-04-26 16:23:40,766 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash -146596052, now seen corresponding path program 1 times [2025-04-26 16:23:40,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:40,766 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897508463] [2025-04-26 16:23:40,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:40,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:40,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:23:40,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:23:40,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,770 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:40,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:23:40,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:23:40,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:40,774 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:40,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2851, now seen corresponding path program 1 times [2025-04-26 16:23:40,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:40,774 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103990847] [2025-04-26 16:23:40,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:40,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:40,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:23:40,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:23:40,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,778 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:23:40,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:23:40,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:23:40,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:23:40,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:23:40,784 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash 855116686, now seen corresponding path program 1 times [2025-04-26 16:23:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:23:40,784 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563889805] [2025-04-26 16:23:40,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:23:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:23:40,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-26 16:23:40,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-26 16:23:40,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:40,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:23:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:23:40,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:23:40,831 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563889805] [2025-04-26 16:23:40,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563889805] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:23:40,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:23:40,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:23:40,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166045607] [2025-04-26 16:23:40,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:23:40,867 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:23:40,867 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:23:40,867 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:23:40,867 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:23:40,868 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:23:40,868 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,868 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:23:40,868 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:23:40,868 INFO L132 ssoRankerPreferences]: Filename of dumped script: figure3.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 16:23:40,868 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:23:40,868 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:23:40,868 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:40,875 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:40,908 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:23:40,908 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:23:40,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:40,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:23:40,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-04-26 16:23:40,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:23:40,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:40,936 INFO L400 LassoAnalysis]: Proved nontermination for one component. [2025-04-26 16:23:40,936 INFO L403 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {counter=1, C=0} Honda state: {counter=1, C=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-04-26 16:23:40,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:23:40,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:40,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:23:40,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-04-26 16:23:40,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:23:40,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:40,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-04-26 16:23:40,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:40,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:40,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:23:40,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-04-26 16:23:40,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:23:40,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:23:41,031 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:23:41,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-04-26 16:23:41,036 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:23:41,036 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:23:41,036 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:23:41,036 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:23:41,036 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:23:41,036 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:41,036 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:23:41,036 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:23:41,036 INFO L132 ssoRankerPreferences]: Filename of dumped script: figure3.wvr.bpl_petrified1_Iteration2_Loop [2025-04-26 16:23:41,036 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:23:41,036 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:23:41,037 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:41,045 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:23:41,073 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:23:41,073 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:23:41,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:41,076 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) [2025-04-26 16:23:41,077 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 [2025-04-26 16:23:41,079 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:23:41,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:23:41,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:23:41,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:23:41,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:23:41,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:23:41,091 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:23:41,091 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:23:41,093 INFO L490 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-04-26 16:23:41,098 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 [2025-04-26 16:23:41,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:41,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:41,100 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) [2025-04-26 16:23:41,102 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 [2025-04-26 16:23:41,103 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:23:41,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:23:41,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:23:41,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:23:41,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:23:41,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:23:41,114 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:23:41,114 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:23:41,116 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:23:41,119 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:23:41,119 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:23:41,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:23:41,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:23:41,120 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) [2025-04-26 16:23:41,122 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 [2025-04-26 16:23:41,123 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:23:41,126 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:23:41,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:23:41,127 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:23:41,127 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:23:41,127 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(N2, i2) = 1*N2 - 1*i2 Supporting invariants [] [2025-04-26 16:23:41,133 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 [2025-04-26 16:23:41,134 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:23:41,149 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:23:41,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:23:41,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:23:41,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:41,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:23:41,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:23:41,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:23:41,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:23:41,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:23:41,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:23:41,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:23:41,173 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:23:41,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:23:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:23:41,188 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-04-26 16:23:41,188 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 58 transitions. cyclomatic complexity: 37 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:23:41,224 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 58 transitions. cyclomatic complexity: 37. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 65 states and 136 transitions. Complement of second has 6 states. [2025-04-26 16:23:41,226 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:23:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (in total 9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:23:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2025-04-26 16:23:41,227 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 16:23:41,227 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:41,227 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 9 letters. Loop has 2 letters. [2025-04-26 16:23:41,227 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:41,227 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 4 letters. [2025-04-26 16:23:41,227 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:23:41,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 136 transitions. [2025-04-26 16:23:41,229 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:23:41,229 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 0 states and 0 transitions. [2025-04-26 16:23:41,229 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:23:41,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:23:41,232 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:23:41,232 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:23:41,232 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:23:41,232 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:23:41,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:23:41,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-26 16:23:41,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-26 16:23:41,235 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (in total 9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:23:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:23:41,236 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-04-26 16:23:41,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-04-26 16:23:41,236 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:23:41,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-04-26 16:23:41,238 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:23:41,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:23:41,238 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:23:41,238 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:23:41,238 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:23:41,238 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:23:41,238 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-26 16:23:41,239 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:23:41,239 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:23:41,239 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:23:41,239 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:23:41,239 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:23:41,247 INFO L201 PluginConnector]: Adding new model figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:23:41 BoogieIcfgContainer [2025-04-26 16:23:41,247 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:23:41,247 INFO L158 Benchmark]: Toolchain (without parser) took 1656.02ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 86.1MB in the beginning and 78.9MB in the end (delta: 7.2MB). Peak memory consumption was 779.9kB. Max. memory is 8.0GB. [2025-04-26 16:23:41,248 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:23:41,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.02ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 84.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:23:41,249 INFO L158 Benchmark]: Boogie Preprocessor took 16.30ms. Allocated memory is still 159.4MB. Free memory was 84.3MB in the beginning and 83.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:23:41,249 INFO L158 Benchmark]: RCFGBuilder took 178.74ms. Allocated memory is still 159.4MB. Free memory was 83.2MB in the beginning and 74.0MB in the end (delta: 9.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:23:41,249 INFO L158 Benchmark]: BuchiAutomizer took 1425.28ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.0MB in the beginning and 78.9MB in the end (delta: -4.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:23:41,250 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.02ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 84.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 16.30ms. Allocated memory is still 159.4MB. Free memory was 84.3MB in the beginning and 83.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 178.74ms. Allocated memory is still 159.4MB. Free memory was 83.2MB in the beginning and 74.0MB in the end (delta: 9.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 1425.28ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.0MB in the beginning and 78.9MB in the end (delta: -4.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 28 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function N1 + -1 * i1 and consists of 5 locations. One deterministic module has affine ranking function -1 * i2 + N2 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:23:41,263 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...