/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_PETRI_NET -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 17:31:08,901 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:31:08,975 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 17:31:09,004 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:31:09,005 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:31:09,005 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:31:09,007 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:31:09,007 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:31:09,008 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:31:09,011 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:31:09,011 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:31:09,012 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:31:09,012 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:31:09,013 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:31:09,014 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:31:09,014 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:31:09,014 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:31:09,014 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:31:09,015 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:31:09,015 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:31:09,015 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:31:09,015 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:31:09,016 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:31:09,017 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:31:09,017 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:31:09,017 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:31:09,017 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:31:09,017 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:31:09,018 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:31:09,018 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:31:09,019 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:31:09,019 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:31:09,019 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:31:09,021 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:31:09,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:31:09,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:31:09,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:31:09,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:31:09,245 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:31:09,246 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:31:09,247 INFO L431 ainManager$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 17:31:09,247 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 17:31:09,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:31:09,276 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:31:09,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:31:09,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:31:09,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:31:09,289 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,297 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,303 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:31:09,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:31:09,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:31:09,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:31:09,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:31:09,314 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,315 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,316 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,316 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,319 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,323 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,323 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,324 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:31:09,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:31:09,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:31:09,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:31:09,327 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 05:31:09" (1/1) ... [2023-10-12 17:31:09,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:09,366 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 17:31:09,377 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 17:31:09,402 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:31:09,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:31:09,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:31:09,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:31:09,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:31:09,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:31:09,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:31:09,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:31:09,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:31:09,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:31:09,404 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:31:09,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:31:09,404 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 17:31:09,447 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:31:09,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:31:09,531 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:31:09,547 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:31:09,547 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:31:09,549 INFO L201 PluginConnector]: Adding new model mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:31:09 BoogieIcfgContainer [2023-10-12 17:31:09,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:31:09,550 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:31:09,551 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:31:09,554 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:31:09,554 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:31:09,555 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 05:31:09" (1/2) ... [2023-10-12 17:31:09,556 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1429def and model type mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:31:09, skipping insertion in model container [2023-10-12 17:31:09,556 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:31:09,556 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 05:31:09" (2/2) ... [2023-10-12 17:31:09,557 INFO L332 chiAutomizerObserver]: Analyzing ICFG mult-equiv.wvr.bpl [2023-10-12 17:31:09,628 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-10-12 17:31:09,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:31:09,676 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:31:09,677 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:31:09,681 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 17:31:09,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:31:09,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2023-10-12 17:31:09,688 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:31:09,700 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:31:09,703 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:31:09,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 23 transitions, 64 flow [2023-10-12 17:31:09,710 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:31:09,710 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:31:09,711 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 17:31:09,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-10-12 17:31:09,823 INFO L134 LiptonReduction]: Checked pairs total: 180 [2023-10-12 17:31:09,823 INFO L136 LiptonReduction]: Total number of compositions: 7 [2023-10-12 17:31:09,835 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:31:09,835 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:31:09,835 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:31:09,835 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:31:09,835 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:31:09,835 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:31:09,835 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:31:09,835 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:31:09,836 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 places, 17 transitions, 52 flow [2023-10-12 17:31:09,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:31:09,840 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-10-12 17:31:09,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:31:09,840 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:31:09,843 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:31:09,843 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 places, 17 transitions, 52 flow [2023-10-12 17:31:09,844 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:31:09,844 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-10-12 17:31:09,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:31:09,844 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:31:09,849 INFO L748 eck$LassoCheckResult]: Stem: 37#[$Ultimate##0]true [53] $Ultimate##0-->L52: Formula: (and (= v_p_5 0) (= v_N_11 v_L_1) (= v_q_1 v_p_5)) InVars {q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} OutVars{q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} AuxVars[] AssignedVars[] 39#[L52]true [75] L52-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 41#[L19-1, L52-1]true [2023-10-12 17:31:09,849 INFO L750 eck$LassoCheckResult]: Loop: 41#[L19-1, L52-1]true [62] L19-1-->L19: Formula: (< 0 v_N_1) InVars {N=v_N_1} OutVars{N=v_N_1} AuxVars[] AssignedVars[] 44#[L52-1, L19]true [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]true [2023-10-12 17:31:09,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:09,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2679, now seen corresponding path program 1 times [2023-10-12 17:31:09,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:09,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517411191] [2023-10-12 17:31:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:09,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:09,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:09,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:09,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2947, now seen corresponding path program 1 times [2023-10-12 17:31:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:09,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902583696] [2023-10-12 17:31:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:10,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2576505, now seen corresponding path program 1 times [2023-10-12 17:31:10,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:10,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767770989] [2023-10-12 17:31:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:10,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:10,074 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:10,075 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:10,075 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:10,075 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:10,075 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:31:10,075 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,075 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:10,076 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:10,076 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:31:10,076 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:10,076 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:10,086 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 17:31:10,094 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 17:31:10,148 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:10,149 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:31:10,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:10,154 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 17:31:10,155 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 17:31:10,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:31:10,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:10,184 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:31:10,185 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 17:31:10,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-10-12 17:31:10,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:10,192 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 17:31:10,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:31:10,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:10,208 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 17:31:10,223 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 17:31:10,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:10,225 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 17:31:10,226 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 17:31:10,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:31:10,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:10,245 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:31:10,248 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 17:31:10,248 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:10,248 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:10,248 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:10,248 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:10,249 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:31:10,249 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,249 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:10,249 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:10,249 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:31:10,249 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:10,249 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:10,250 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 17:31:10,261 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 17:31:10,289 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:10,293 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:31:10,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:10,296 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 17:31:10,303 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 17:31:10,304 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 17:31:10,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:31:10,311 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:31:10,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:31:10,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:31:10,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:31:10,314 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:31:10,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:31:10,319 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:31:10,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-10-12 17:31:10,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:10,332 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 17:31:10,342 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 17:31:10,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:31:10,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:31:10,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:31:10,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:31:10,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:31:10,353 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:31:10,353 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:31:10,360 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 17:31:10,377 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:31:10,381 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:31:10,381 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:31:10,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:10,384 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 17:31:10,388 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 17:31:10,413 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:31:10,414 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:31:10,414 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:31:10,414 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N) = 1*N Supporting invariants [] [2023-10-12 17:31:10,422 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 17:31:10,425 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:31:10,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:10,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:31:10,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:10,477 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:31:10,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:10,504 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 17:31:10,555 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 17:31:10,557 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. 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 17:31:10,693 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. 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 7 states and 276 transitions. [2023-10-12 17:31:10,694 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:31:10,704 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:31:10,706 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 17:31:10,713 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 17:31:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2023-10-12 17:31:10,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 180 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:31:10,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:10,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 180 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:31:10,721 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:10,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 180 transitions. Stem has 2 letters. Loop has 4 letters. [2023-10-12 17:31:10,721 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:10,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 262 transitions, 1336 flow [2023-10-12 17:31:10,796 INFO L124 PetriNetUnfolderBase]: 353/538 cut-off events. [2023-10-12 17:31:10,796 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2023-10-12 17:31:10,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 538 events. 353/538 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1995 event pairs, 31 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 944. Up to 113 conditions per place. [2023-10-12 17:31:10,799 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 38 places, 262 transitions, 1336 flow [2023-10-12 17:31:10,803 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 38 places, 262 transitions, 1336 flow [2023-10-12 17:31:10,804 INFO L430 stractBuchiCegarLoop]: Abstraction has has 38 places, 262 transitions, 1336 flow [2023-10-12 17:31:10,804 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:31:10,804 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38 places, 262 transitions, 1336 flow [2023-10-12 17:31:10,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:31:10,809 INFO L124 PetriNetUnfolderBase]: 12/25 cut-off events. [2023-10-12 17:31:10,809 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-10-12 17:31:10,809 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:31:10,809 INFO L748 eck$LassoCheckResult]: Stem: 37#[$Ultimate##0]true [53] $Ultimate##0-->L52: Formula: (and (= v_p_5 0) (= v_N_11 v_L_1) (= v_q_1 v_p_5)) InVars {q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} OutVars{q=v_q_1, p=v_p_5, N=v_N_11, L=v_L_1} AuxVars[] AssignedVars[] 39#[L52]true [75] L52-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 41#[L19-1, L52-1]true [78] L52-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 98#[L19-1, L30-1, L53]true [2023-10-12 17:31:10,810 INFO L750 eck$LassoCheckResult]: Loop: 98#[L19-1, L30-1, L53]true [66] L30-1-->L30: Formula: (< 1 v_N_6) InVars {N=v_N_6} OutVars{N=v_N_6} AuxVars[] AssignedVars[] 101#[L19-1, L30, L53]true [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] 98#[L19-1, L30-1, L53]true [2023-10-12 17:31:10,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash 83127, now seen corresponding path program 1 times [2023-10-12 17:31:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:10,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997938296] [2023-10-12 17:31:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:10,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:10,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:10,820 INFO L85 PathProgramCache]: Analyzing trace with hash 3075, now seen corresponding path program 1 times [2023-10-12 17:31:10,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:10,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097293920] [2023-10-12 17:31:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,828 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:10,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:10,834 INFO L85 PathProgramCache]: Analyzing trace with hash 79887161, now seen corresponding path program 1 times [2023-10-12 17:31:10,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:10,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181579389] [2023-10-12 17:31:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:10,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:10,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:10,875 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:10,876 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:10,876 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:10,876 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:10,876 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:31:10,876 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,876 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:10,876 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:10,876 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:31:10,876 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:10,876 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:10,877 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 17:31:10,883 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 17:31:10,907 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:10,907 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:31:10,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:10,909 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 17:31:10,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:31:10,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:10,929 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 17:31:10,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-10-12 17:31:10,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:10,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:10,951 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 17:31:10,963 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 17:31:10,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:31:10,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:10,997 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:31:11,000 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 17:31:11,001 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:11,001 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:11,001 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:11,001 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:11,001 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:31:11,001 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:11,001 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:11,001 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:11,001 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:31:11,002 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:11,002 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:11,003 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 17:31:11,009 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 17:31:11,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:11,033 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:31:11,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:11,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:11,035 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 17:31:11,048 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 17:31:11,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:31:11,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:31:11,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:31:11,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:31:11,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:31:11,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:31:11,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:31:11,060 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 17:31:11,081 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:31:11,083 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-10-12 17:31:11,083 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:31:11,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:11,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:11,086 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 17:31:11,087 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 17:31:11,089 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:31:11,089 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:31:11,089 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:31:11,089 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N) = 1*N Supporting invariants [] [2023-10-12 17:31:11,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-10-12 17:31:11,097 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:31:11,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:11,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:31:11,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:11,129 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:31:11,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:11,145 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 17:31:11,146 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 17:31:11,147 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. 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 17:31:11,259 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. 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 7 states and 273 transitions. [2023-10-12 17:31:11,259 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:31:11,295 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:31:11,296 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 17:31:11,297 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 17:31:11,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2023-10-12 17:31:11,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 180 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:31:11,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:11,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 180 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:31:11,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:11,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 180 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:31:11,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:11,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 4012 transitions, 28680 flow [2023-10-12 17:31:11,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:31:11,467 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 17:31:11,593 INFO L124 PetriNetUnfolderBase]: 1039/1506 cut-off events. [2023-10-12 17:31:11,593 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2023-10-12 17:31:11,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4906 conditions, 1506 events. 1039/1506 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6381 event pairs, 43 based on Foata normal form. 0/834 useless extension candidates. Maximal degree in co-relation 3927. Up to 399 conditions per place. [2023-10-12 17:31:11,598 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 52 places, 4012 transitions, 28680 flow [2023-10-12 17:31:11,664 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 52 places, 4012 transitions, 28680 flow [2023-10-12 17:31:11,664 INFO L430 stractBuchiCegarLoop]: Abstraction has has 52 places, 4012 transitions, 28680 flow [2023-10-12 17:31:11,665 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:31:11,665 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 52 places, 4012 transitions, 28680 flow [2023-10-12 17:31:11,727 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:31:11,728 INFO L124 PetriNetUnfolderBase]: 217/326 cut-off events. [2023-10-12 17:31:11,728 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-10-12 17:31:11,728 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:31:11,729 INFO L748 eck$LassoCheckResult]: Stem: 37#[$Ultimate##0]true [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]true [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]true [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] 98#[L19-1, L30-1, L53]true [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] 153#[L54, L19-1, L30-1, L41-1]true [62] L19-1-->L19: Formula: (< 0 v_N_1) InVars {N=v_N_1} OutVars{N=v_N_1} AuxVars[] AssignedVars[] 155#[L54, L30-1, L19, L41-1]true [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] 155#[L54, L30-1, L19, L41-1]true [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] 155#[L54, L30-1, L19, L41-1]true [2023-10-12 17:31:11,729 INFO L750 eck$LassoCheckResult]: Loop: 155#[L54, L30-1, L19, L41-1]true [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] 155#[L54, L30-1, L19, L41-1]true [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] 155#[L54, L30-1, L19, L41-1]true [2023-10-12 17:31:11,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:11,730 INFO L85 PathProgramCache]: Analyzing trace with hash -537405660, now seen corresponding path program 1 times [2023-10-12 17:31:11,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:11,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875754677] [2023-10-12 17:31:11,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:11,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:11,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:11,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:11,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash 3809, now seen corresponding path program 1 times [2023-10-12 17:31:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:11,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967270090] [2023-10-12 17:31:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:11,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:11,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:11,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:11,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:11,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1050760892, now seen corresponding path program 2 times [2023-10-12 17:31:11,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:11,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90339160] [2023-10-12 17:31:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:11,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:11,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:11,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:11,827 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:11,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:11,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:11,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:11,827 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:31:11,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:11,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:11,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:11,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:31:11,827 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:11,827 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:11,828 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 17:31:11,831 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 17:31:11,854 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:11,854 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:31:11,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:11,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:11,857 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 17:31:11,862 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 17:31:11,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:31:11,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:11,872 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:31:11,872 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 17:31:11,877 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 17:31:11,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:11,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:11,878 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 17:31:11,880 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 17:31:11,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:31:11,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:11,905 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 17:31:11,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:11,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:11,906 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 17:31:11,908 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 17:31:11,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:31:11,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:11,971 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:31:11,978 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 17:31:11,978 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:11,978 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:11,978 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:11,978 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:11,978 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:31:11,979 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:11,979 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:11,979 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:11,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-equiv.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:31:11,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:11,979 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:11,980 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 17:31:11,987 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 17:31:12,014 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:12,015 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:31:12,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:12,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:12,016 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 17:31:12,028 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 17:31:12,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:31:12,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:31:12,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:31:12,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:31:12,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:31:12,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:31:12,038 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:31:12,040 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 17:31:12,049 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:31:12,053 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 17:31:12,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:12,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:12,054 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 17:31:12,057 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 17:31:12,058 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 17:31:12,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:31:12,066 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:31:12,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:31:12,066 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:31:12,066 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:31:12,067 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:31:12,067 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:31:12,101 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:31:12,103 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-10-12 17:31:12,103 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:31:12,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:12,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:12,104 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 17:31:12,116 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:31:12,116 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:31:12,116 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:31:12,116 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(L) = 1*L Supporting invariants [] [2023-10-12 17:31:12,123 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 17:31:12,124 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 17:31:12,125 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:31:12,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:12,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:31:12,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:12,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:31:12,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:31:12,188 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-10-12 17:31:12,188 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 17:31:12,278 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 7 states and 275 transitions. [2023-10-12 17:31:12,278 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:31:12,393 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 17:31:12,731 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:31:12,732 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 17:31:12,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 17:31:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2023-10-12 17:31:12,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 180 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:31:12,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:12,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 180 transitions. Stem has 9 letters. Loop has 2 letters. [2023-10-12 17:31:12,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:12,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 180 transitions. Stem has 7 letters. Loop has 4 letters. [2023-10-12 17:31:12,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:12,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 62056 transitions, 570176 flow [2023-10-12 17:31:22,110 INFO L124 PetriNetUnfolderBase]: 3329/4756 cut-off events. [2023-10-12 17:31:22,110 INFO L125 PetriNetUnfolderBase]: For 983/983 co-relation queries the response was YES. [2023-10-12 17:31:22,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19750 conditions, 4756 events. 3329/4756 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 23975 event pairs, 40 based on Foata normal form. 0/2512 useless extension candidates. Maximal degree in co-relation 14544. Up to 1300 conditions per place. [2023-10-12 17:31:22,115 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 66 places, 62056 transitions, 570176 flow [2023-10-12 17:31:22,697 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 66 places, 62056 transitions, 570176 flow [2023-10-12 17:31:22,698 INFO L430 stractBuchiCegarLoop]: Abstraction has has 66 places, 62056 transitions, 570176 flow [2023-10-12 17:31:22,698 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:31:22,698 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 66 places, 62056 transitions, 570176 flow [2023-10-12 17:31:34,194 INFO L124 PetriNetUnfolderBase]: 3329/4756 cut-off events. [2023-10-12 17:31:34,194 INFO L125 PetriNetUnfolderBase]: For 983/983 co-relation queries the response was YES. [2023-10-12 17:31:34,194 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is empty [2023-10-12 17:31:34,199 INFO L201 PluginConnector]: Adding new model mult-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:31:34 BoogieIcfgContainer [2023-10-12 17:31:34,199 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:31:34,200 INFO L158 Benchmark]: Toolchain (without parser) took 24923.84ms. Allocated memory was 184.5MB in the beginning and 989.9MB in the end (delta: 805.3MB). Free memory was 135.0MB in the beginning and 686.6MB in the end (delta: -551.6MB). Peak memory consumption was 708.7MB. Max. memory is 8.0GB. [2023-10-12 17:31:34,203 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.27ms. Allocated memory is still 184.5MB. Free memory was 136.2MB in the beginning and 136.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:31:34,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.73ms. Allocated memory is still 184.5MB. Free memory was 134.9MB in the beginning and 133.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:31:34,203 INFO L158 Benchmark]: Boogie Preprocessor took 19.97ms. Allocated memory is still 184.5MB. Free memory was 133.4MB in the beginning and 132.4MB in the end (delta: 963.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:31:34,204 INFO L158 Benchmark]: RCFGBuilder took 223.18ms. Allocated memory is still 184.5MB. Free memory was 132.3MB in the beginning and 122.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:31:34,204 INFO L158 Benchmark]: BuchiAutomizer took 24649.06ms. Allocated memory was 184.5MB in the beginning and 989.9MB in the end (delta: 805.3MB). Free memory was 122.2MB in the beginning and 686.6MB in the end (delta: -564.5MB). Peak memory consumption was 696.2MB. Max. memory is 8.0GB. [2023-10-12 17:31:34,206 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 184.5MB. Free memory was 136.2MB in the beginning and 136.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.73ms. Allocated memory is still 184.5MB. Free memory was 134.9MB in the beginning and 133.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.97ms. Allocated memory is still 184.5MB. Free memory was 133.4MB in the beginning and 132.4MB in the end (delta: 963.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 223.18ms. Allocated memory is still 184.5MB. Free memory was 132.3MB in the beginning and 122.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 24649.06ms. Allocated memory was 184.5MB in the beginning and 989.9MB in the end (delta: 805.3MB). Free memory was 122.2MB in the beginning and 686.6MB in the end (delta: -564.5MB). Peak memory consumption was 696.2MB. 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 5 locations. One deterministic module has affine ranking function L and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 24.5s and 4 iterations. TraceHistogramMax:0. Analysis of lassos took 1.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. 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: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 273 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 270 mSDsluCounter, 277 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 132 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 295 IncrementalHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 145 mSDtfsCounter, 295 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf96 smp100 dnf100 smp100 tf112 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms 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: 0.1s - 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: 0.1s, 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: 36, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 21, dependent conditional: 0, dependent unconditional: 21, 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 17:31:34,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...