/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/mult-equiv.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:14:26,705 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:14:26,779 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:14:26,804 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:14:26,805 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:14:26,805 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:14:26,806 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:14:26,806 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:14:26,807 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:14:26,810 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:14:26,810 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:14:26,810 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:14:26,810 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:14:26,811 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:14:26,811 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:14:26,812 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:14:26,812 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:14:26,812 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:14:26,812 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:14:26,812 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:14:26,813 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:14:26,813 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:14:26,813 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:14:26,813 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:14:26,813 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:14:26,814 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:14:26,814 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:14:26,814 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:14:26,814 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:14:26,814 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:14:26,815 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:14:26,815 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:14:26,815 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:14:26,816 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:14:26,816 INFO L137 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:14:26,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:14:27,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:14:27,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:14:27,013 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:14:27,014 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:14:27,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/mult-equiv.wvr.bpl [2023-10-12 17:14:27,015 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/mult-equiv.wvr.bpl' [2023-10-12 17:14:27,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:14:27,033 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:14:27,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:27,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:14:27,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:14:27,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,052 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:14:27,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:27,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:14:27,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:14:27,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:14:27,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:14:27,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:14:27,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:14:27,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:14:27,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/1) ... [2023-10-12 17:14:27,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:27,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:27,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:27,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-10-12 17:14:27,134 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:14:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:14:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:14:27,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:14:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:14:27,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:14:27,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:14:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:14:27,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:14:27,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:14:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:14:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:14:27,139 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-10-12 17:14:27,172 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:14:27,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:14:27,297 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:14:27,328 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:14:27,329 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:14:27,330 INFO L201 PluginConnector]: Adding new model mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:27 BoogieIcfgContainer [2023-10-12 17:14:27,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:14:27,331 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:14:27,331 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:14:27,336 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:14:27,336 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:27,337 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:27" (1/2) ... [2023-10-12 17:14:27,338 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@dcaf9e2 and model type mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:14:27, skipping insertion in model container [2023-10-12 17:14:27,338 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:27,338 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:27" (2/2) ... [2023-10-12 17:14:27,339 INFO L332 chiAutomizerObserver]: Analyzing ICFG mult-equiv.wvr.bpl [2023-10-12 17:14:27,416 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-10-12 17:14:27,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:14:27,501 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:14:27,501 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:14:27,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2023-10-12 17:14:27,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:14:27,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2023-10-12 17:14:27,511 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:14:27,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:14:27,548 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:14:27,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 23 transitions, 64 flow [2023-10-12 17:14:27,569 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:14:27,569 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:14:27,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2023-10-12 17:14:27,570 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-10-12 17:14:27,756 INFO L134 LiptonReduction]: Checked pairs total: 180 [2023-10-12 17:14:27,757 INFO L136 LiptonReduction]: Total number of compositions: 7 [2023-10-12 17:14:27,781 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:14:27,791 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:14:27,791 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:14:27,791 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:14:27,791 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:14:27,791 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:14:27,791 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:14:27,791 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:14:27,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:14:27,825 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 33 [2023-10-12 17:14:27,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:27,826 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:27,845 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:27,846 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:14:27,847 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:14:27,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 42 states, but on-demand construction may add more states [2023-10-12 17:14:27,857 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 33 [2023-10-12 17:14:27,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:27,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:27,857 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:27,857 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:14:27,860 INFO L748 eck$LassoCheckResult]: Stem: 36#[$Ultimate##0]don't care [53] $Ultimate##0-->L52: Formula: (and (= v_p_5 0) (= v_N_11 v_L_1) (= v_q_1 v_p_5)) InVars {q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} OutVars{q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} AuxVars[] AssignedVars[] 39#[L52]don't care [75] L52-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 41#[L19-1, L52-1]don't care [2023-10-12 17:14:27,860 INFO L750 eck$LassoCheckResult]: Loop: 41#[L19-1, L52-1]don't care [62] L19-1-->L19: Formula: (< 0 v_N_1) InVars {N=v_N_1} OutVars{N=v_N_1} AuxVars[] AssignedVars[] 47#[L19, L52-1]don't care [64] L19-->L19-1: Formula: (let ((.cse0 (< 0 v_N_13))) (and (= (ite .cse0 (+ v_M_4 v_p_8) v_p_8) v_p_7) (= (ite .cse0 (+ (- 1) v_N_13) v_N_13) v_N_12))) InVars {p=v_p_8, N=v_N_13, M=v_M_4} OutVars{p=v_p_7, N=v_N_12, M=v_M_4} AuxVars[] AssignedVars[p, N] 41#[L19-1, L52-1]don't care [2023-10-12 17:14:27,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2679, now seen corresponding path program 1 times [2023-10-12 17:14:27,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:27,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157600896] [2023-10-12 17:14:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:27,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:27,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:27,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:27,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2947, now seen corresponding path program 1 times [2023-10-12 17:14:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:27,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651894901] [2023-10-12 17:14:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:27,971 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:27,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:27,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2576505, now seen corresponding path program 1 times [2023-10-12 17:14:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:27,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369501177] [2023-10-12 17:14:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:27,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:27,981 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:27,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:28,027 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:28,028 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:28,028 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:28,028 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:28,028 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:28,028 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,028 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:28,028 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:28,028 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:28,028 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:28,028 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:28,039 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,046 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,074 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:28,074 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:28,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-10-12 17:14:28,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:28,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:28,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:14:28,119 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {M=0, p=0} Honda state: {M=0, p=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:14:28,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:28,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-10-12 17:14:28,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:28,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:28,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:28,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-10-12 17:14:28,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:28,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:28,192 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:28,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:28,197 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:28,197 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:28,197 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:28,197 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:28,197 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:28,197 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,198 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:28,198 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:28,198 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:28,198 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:28,198 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:28,199 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,202 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,230 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:28,233 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:28,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,244 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-10-12 17:14:28,247 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 [2023-10-12 17:14:28,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:28,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:28,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:28,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:28,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:28,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:28,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:28,273 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:14:28,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:28,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,278 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-10-12 17:14:28,284 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 [2023-10-12 17:14:28,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:28,289 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:28,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:28,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:28,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:28,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:28,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:28,307 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:28,310 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:28,310 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:28,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,314 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,349 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:28,349 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:28,349 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:28,350 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N) = 1*N Supporting invariants [] [2023-10-12 17:14:28,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-10-12 17:14:28,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:28,374 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:28,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:28,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:28,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:28,408 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:28,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:14:28,436 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 [2023-10-12 17:14:28,437 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 42 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:28,508 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 42 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 165 states and 490 transitions. Complement of second has 7 states. [2023-10-12 17:14:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2023-10-12 17:14:28,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:14:28,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:28,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:14:28,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:28,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 2 letters. Loop has 4 letters. [2023-10-12 17:14:28,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:28,515 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 165 states and 490 transitions. [2023-10-12 17:14:28,521 INFO L131 ngComponentsAnalysis]: Automaton has 17 accepting balls. 34 [2023-10-12 17:14:28,525 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 165 states to 105 states and 326 transitions. [2023-10-12 17:14:28,525 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2023-10-12 17:14:28,526 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2023-10-12 17:14:28,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 326 transitions. [2023-10-12 17:14:28,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:28,526 INFO L219 hiAutomatonCegarLoop]: Abstraction has 105 states and 326 transitions. [2023-10-12 17:14:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 326 transitions. [2023-10-12 17:14:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2023-10-12 17:14:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 3.232876712328767) internal successors, (236), 72 states have internal predecessors, (236), 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) [2023-10-12 17:14:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 236 transitions. [2023-10-12 17:14:28,546 INFO L241 hiAutomatonCegarLoop]: Abstraction has 73 states and 236 transitions. [2023-10-12 17:14:28,546 INFO L430 stractBuchiCegarLoop]: Abstraction has 73 states and 236 transitions. [2023-10-12 17:14:28,546 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:14:28,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 236 transitions. [2023-10-12 17:14:28,548 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 32 [2023-10-12 17:14:28,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:28,548 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:28,548 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:14:28,548 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:14:28,548 INFO L748 eck$LassoCheckResult]: Stem: 453#[$Ultimate##0]don't care [53] $Ultimate##0-->L52: Formula: (and (= v_p_5 0) (= v_N_11 v_L_1) (= v_q_1 v_p_5)) InVars {q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} OutVars{q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} AuxVars[] AssignedVars[] 455#[L52]don't care [75] L52-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 427#[L19-1, L52-1]don't care [78] L52-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 361#[L30-1, L53, L19-1]don't care [2023-10-12 17:14:28,548 INFO L750 eck$LassoCheckResult]: Loop: 361#[L30-1, L53, L19-1]don't care [66] L30-1-->L30: Formula: (< 1 v_N_6) InVars {N=v_N_6} OutVars{N=v_N_6} AuxVars[] AssignedVars[] 365#[L19-1, L53, L30]don't care [68] L30-->L30-1: Formula: (let ((.cse0 (< 1 v_N_17))) (and (= v_N_16 (ite .cse0 (+ (- 2) v_N_17) v_N_17)) (= v_p_11 (ite .cse0 (+ v_p_12 (* 2 v_M_6)) v_p_12)))) InVars {p=v_p_12, N=v_N_17, M=v_M_6} OutVars{p=v_p_11, N=v_N_16, M=v_M_6} AuxVars[] AssignedVars[p, N] 361#[L30-1, L53, L19-1]don't care [2023-10-12 17:14:28,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:28,549 INFO L85 PathProgramCache]: Analyzing trace with hash 83127, now seen corresponding path program 1 times [2023-10-12 17:14:28,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:28,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678885030] [2023-10-12 17:14:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:28,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:28,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash 3075, now seen corresponding path program 1 times [2023-10-12 17:14:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:28,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859238941] [2023-10-12 17:14:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:28,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:28,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash 79887161, now seen corresponding path program 1 times [2023-10-12 17:14:28,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:28,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809601459] [2023-10-12 17:14:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:28,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:28,588 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:28,588 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:28,588 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:28,588 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:28,588 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:28,588 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:28,588 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:28,588 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:28,588 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:28,588 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:28,589 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,593 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,610 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:28,610 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:28,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:28,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:28,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-10-12 17:14:28,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-10-12 17:14:28,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,664 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-10-12 17:14:28,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:28,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:28,681 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:28,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:28,684 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:28,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:28,684 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:28,684 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:28,684 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:28,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,684 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:28,684 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:28,684 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:28,684 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:28,685 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:28,685 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,702 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,726 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:28,726 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:28,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,755 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-10-12 17:14:28,760 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 [2023-10-12 17:14:28,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:28,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:28,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:28,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:28,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:28,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:28,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:28,788 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:28,790 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-10-12 17:14:28,790 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:14:28,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-10-12 17:14:28,793 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:28,793 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:28,794 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:28,794 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N) = 1*N Supporting invariants [] [2023-10-12 17:14:28,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-10-12 17:14:28,797 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:28,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:28,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:28,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:28,826 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:28,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:28,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-10-12 17:14:28,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:14:28,853 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 [2023-10-12 17:14:28,853 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 236 transitions. cyclomatic complexity: 185 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:28,890 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 236 transitions. cyclomatic complexity: 185. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 245 states and 844 transitions. Complement of second has 6 states. [2023-10-12 17:14:28,891 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 [2023-10-12 17:14:28,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2023-10-12 17:14:28,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:14:28,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:28,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:14:28,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:28,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:14:28,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:28,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 245 states and 844 transitions. [2023-10-12 17:14:28,902 INFO L131 ngComponentsAnalysis]: Automaton has 19 accepting balls. 19 [2023-10-12 17:14:28,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 245 states to 150 states and 510 transitions. [2023-10-12 17:14:28,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2023-10-12 17:14:28,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2023-10-12 17:14:28,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 510 transitions. [2023-10-12 17:14:28,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:28,905 INFO L219 hiAutomatonCegarLoop]: Abstraction has 150 states and 510 transitions. [2023-10-12 17:14:28,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 510 transitions. [2023-10-12 17:14:28,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 127. [2023-10-12 17:14:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 127 states have (on average 3.574803149606299) internal successors, (454), 126 states have internal predecessors, (454), 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) [2023-10-12 17:14:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 454 transitions. [2023-10-12 17:14:28,914 INFO L241 hiAutomatonCegarLoop]: Abstraction has 127 states and 454 transitions. [2023-10-12 17:14:28,914 INFO L430 stractBuchiCegarLoop]: Abstraction has 127 states and 454 transitions. [2023-10-12 17:14:28,914 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:14:28,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 127 states and 454 transitions. [2023-10-12 17:14:28,915 INFO L131 ngComponentsAnalysis]: Automaton has 19 accepting balls. 19 [2023-10-12 17:14:28,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:28,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:28,916 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-10-12 17:14:28,916 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:28,916 INFO L748 eck$LassoCheckResult]: Stem: 891#[$Ultimate##0]don't care [53] $Ultimate##0-->L52: Formula: (and (= v_p_5 0) (= v_N_11 v_L_1) (= v_q_1 v_p_5)) InVars {q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} OutVars{q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} AuxVars[] AssignedVars[] 893#[L52]don't care [75] L52-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 847#[L19-1, L52-1]don't care [78] L52-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 853#[L30-1, L53, L19-1]don't care [81] L53-->L41-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 791#[L41-1, L30-1, L19-1, L54]don't care [2023-10-12 17:14:28,916 INFO L750 eck$LassoCheckResult]: Loop: 791#[L41-1, L30-1, L19-1, L54]don't care [89] L41-1-->L41-1: Formula: (and (= (+ v_L_12 1) v_L_13) (= (+ v_M_20 v_q_10) v_q_9) (< 0 v_L_13)) InVars {q=v_q_10, M=v_M_20, L=v_L_13} OutVars{q=v_q_9, M=v_M_20, L=v_L_12} AuxVars[] AssignedVars[q, L] 791#[L41-1, L30-1, L19-1, L54]don't care [2023-10-12 17:14:28,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:28,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2577018, now seen corresponding path program 1 times [2023-10-12 17:14:28,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:28,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819392961] [2023-10-12 17:14:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:28,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:28,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:28,923 INFO L85 PathProgramCache]: Analyzing trace with hash 120, now seen corresponding path program 1 times [2023-10-12 17:14:28,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:28,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130645905] [2023-10-12 17:14:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:28,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:28,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:28,927 INFO L85 PathProgramCache]: Analyzing trace with hash 79887647, now seen corresponding path program 1 times [2023-10-12 17:14:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:28,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342218153] [2023-10-12 17:14:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:28,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:28,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:28,949 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:28,949 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:28,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:28,949 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:28,949 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:28,949 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,949 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:28,950 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:28,950 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:28,950 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:28,950 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:28,950 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,953 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:28,971 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:28,971 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:28,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:28,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:28,986 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:28,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-10-12 17:14:28,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:28,988 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:29,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:14:29,013 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {q=0, M=0} Honda state: {q=0, M=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:14:29,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:29,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:29,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:29,053 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:29,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-10-12 17:14:29,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:29,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:29,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:29,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:29,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:29,087 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:29,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-10-12 17:14:29,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:29,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:29,111 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:29,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:29,114 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:29,114 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:29,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:29,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:29,114 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:29,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:29,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:29,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:29,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:29,114 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:29,115 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:29,115 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:29,118 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:29,139 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:29,139 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:29,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:29,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:29,140 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:29,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-10-12 17:14:29,143 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 [2023-10-12 17:14:29,149 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:29,149 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:29,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:29,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:29,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:29,150 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:29,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:29,163 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:14:29,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:29,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:29,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:29,168 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:29,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-10-12 17:14:29,170 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 [2023-10-12 17:14:29,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:29,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:29,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:29,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:29,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:29,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:29,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:29,186 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:29,188 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:29,188 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:29,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:29,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:29,189 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:29,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-10-12 17:14:29,192 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:29,192 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:29,193 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:29,193 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(L) = 1*L Supporting invariants [] [2023-10-12 17:14:29,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:29,196 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:29,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:29,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:29,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:29,219 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:29,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:14:29,219 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 [2023-10-12 17:14:29,219 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 127 states and 454 transitions. cyclomatic complexity: 366 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:29,240 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 127 states and 454 transitions. cyclomatic complexity: 366. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 320 states and 1059 transitions. Complement of second has 4 states. [2023-10-12 17:14:29,240 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 [2023-10-12 17:14:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2023-10-12 17:14:29,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:14:29,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:29,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:29,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:29,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:14:29,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:29,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 320 states and 1059 transitions. [2023-10-12 17:14:29,245 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:29,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 320 states to 0 states and 0 transitions. [2023-10-12 17:14:29,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:14:29,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:14:29,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:14:29,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:14:29,245 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:29,245 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:29,245 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:29,246 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:14:29,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:14:29,246 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:29,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:14:29,250 INFO L201 PluginConnector]: Adding new model mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:14:29 BoogieIcfgContainer [2023-10-12 17:14:29,250 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:14:29,251 INFO L158 Benchmark]: Toolchain (without parser) took 2217.16ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 117.1MB in the beginning and 144.8MB in the end (delta: -27.6MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. [2023-10-12 17:14:29,251 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.27ms. Allocated memory is still 167.8MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:14:29,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.10ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 115.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:14:29,252 INFO L158 Benchmark]: Boogie Preprocessor took 16.41ms. Allocated memory is still 167.8MB. Free memory was 115.5MB in the beginning and 114.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:14:29,252 INFO L158 Benchmark]: RCFGBuilder took 259.17ms. Allocated memory is still 167.8MB. Free memory was 114.4MB in the beginning and 137.8MB in the end (delta: -23.4MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. [2023-10-12 17:14:29,252 INFO L158 Benchmark]: BuchiAutomizer took 1919.55ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 137.8MB in the beginning and 144.8MB in the end (delta: -7.0MB). Peak memory consumption was 26.6MB. Max. memory is 8.0GB. [2023-10-12 17:14:29,253 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 0.27ms. Allocated memory is still 167.8MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.10ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 115.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.41ms. Allocated memory is still 167.8MB. Free memory was 115.5MB in the beginning and 114.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 259.17ms. Allocated memory is still 167.8MB. Free memory was 114.4MB in the beginning and 137.8MB in the end (delta: -23.4MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 1919.55ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 137.8MB in the beginning and 144.8MB in the end (delta: -7.0MB). Peak memory consumption was 26.6MB. 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 3 terminating modules (0 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function N and consists of 5 locations. One deterministic module has affine ranking function N and consists of 4 locations. One deterministic module has affine ranking function L and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 55 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 8 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf95 smp100 dnf100 smp100 tf113 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 30 PlacesBefore, 24 PlacesAfterwards, 23 TransitionsBefore, 17 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 180 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 104, independent: 92, independent conditional: 0, independent unconditional: 92, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 70, independent: 67, independent conditional: 0, independent unconditional: 67, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 70, independent: 63, independent conditional: 0, independent unconditional: 63, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 80, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 104, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 70, unknown conditional: 0, unknown unconditional: 70] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:14:29,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-10-12 17:14:29,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...