/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-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:30:57,041 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:30:57,095 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 17:30:57,122 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:30:57,123 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:30:57,123 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:30:57,125 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:30:57,125 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:30:57,125 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:30:57,128 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:30:57,129 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:30:57,129 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:30:57,129 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:30:57,130 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:30:57,130 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:30:57,130 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:30:57,130 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:30:57,130 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:30:57,131 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:30:57,131 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:30:57,131 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:30:57,131 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:30:57,131 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:30:57,133 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:30:57,133 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:30:57,133 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:30:57,134 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:30:57,134 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:30:57,134 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:30:57,134 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:30:57,135 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:30:57,135 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:30:57,135 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:30:57,136 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:30:57,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:30:57,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:30:57,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:30:57,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:30:57,374 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:30:57,375 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:30:57,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/mult-4.wvr.bpl [2023-10-12 17:30:57,376 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/mult-4.wvr.bpl' [2023-10-12 17:30:57,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:30:57,406 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:30:57,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:30:57,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:30:57,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:30:57,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,428 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,432 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:30:57,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:30:57,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:30:57,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:30:57,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:30:57,441 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:30:57,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:30:57,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:30:57,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:30:57,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/1) ... [2023-10-12 17:30:57,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:57,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:57,506 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 17:30:57,521 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 17:30:57,546 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:30:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:30:57,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:30:57,546 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:30:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:30:57,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:30:57,546 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:30:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:30:57,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:30:57,547 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:30:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:30:57,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:30:57,547 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2023-10-12 17:30:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-10-12 17:30:57,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-10-12 17:30:57,548 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 17:30:57,589 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:30:57,590 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:30:57,695 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:30:57,711 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:30:57,711 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:30:57,713 INFO L201 PluginConnector]: Adding new model mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:30:57 BoogieIcfgContainer [2023-10-12 17:30:57,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:30:57,714 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:30:57,714 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:30:57,718 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:30:57,718 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:30:57,719 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:57" (1/2) ... [2023-10-12 17:30:57,720 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@129a549e and model type mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:30:57, skipping insertion in model container [2023-10-12 17:30:57,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:30:57,720 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:30:57" (2/2) ... [2023-10-12 17:30:57,725 INFO L332 chiAutomizerObserver]: Analyzing ICFG mult-4.wvr.bpl [2023-10-12 17:30:57,788 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-10-12 17:30:57,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 40 transitions, 112 flow [2023-10-12 17:30:57,857 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2023-10-12 17:30:57,857 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:30:57,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 32 events. 4/32 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 50 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-10-12 17:30:57,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 40 transitions, 112 flow [2023-10-12 17:30:57,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 32 transitions, 88 flow [2023-10-12 17:30:57,869 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:30:57,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 32 transitions, 88 flow [2023-10-12 17:30:57,890 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 32 transitions, 88 flow [2023-10-12 17:30:57,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 88 flow [2023-10-12 17:30:57,896 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2023-10-12 17:30:57,896 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:30:57,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 32 events. 4/32 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 50 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-10-12 17:30:57,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 288 [2023-10-12 17:30:58,204 INFO L134 LiptonReduction]: Checked pairs total: 207 [2023-10-12 17:30:58,204 INFO L136 LiptonReduction]: Total number of compositions: 14 [2023-10-12 17:30:58,215 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:30:58,215 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:30:58,215 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:30:58,215 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:30:58,215 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:30:58,216 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:30:58,216 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:30:58,217 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:30:58,217 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:30:58,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:58,221 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:30:58,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:30:58,221 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:58,227 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:30:58,227 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:30:58,229 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:58,229 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:30:58,229 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:30:58,229 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:58,232 INFO L748 eck$LassoCheckResult]: Stem: 49#[$Ultimate##0]true [133] $Ultimate##0-->L73: Formula: (and (= v_M1_10 v_N1_10) (= v_counter_59 0) (= v_i1_18 v_j2_22) (= v_i1_18 0) (< 0 v_C_28) (= v_i1_18 v_j1_18) (= v_i1_18 v_i2_22) (= v_M2_10 v_N1_10) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_59, i1=v_i1_18, j2=v_j2_22, i2=v_i2_22, j1=v_j1_18, N2=v_N2_10, M1=v_M1_10, M2=v_M2_10, C=v_C_28, N1=v_N1_10} OutVars{counter=v_counter_59, i1=v_i1_18, j2=v_j2_22, i2=v_i2_22, j1=v_j1_18, N2=v_N2_10, M1=v_M1_10, M2=v_M2_10, C=v_C_28, N1=v_N1_10} AuxVars[] AssignedVars[] 51#[L73]true [106] L73-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 53#[L73-1, L24-1]true [2023-10-12 17:30:58,232 INFO L750 eck$LassoCheckResult]: Loop: 53#[L73-1, L24-1]true [126] L24-1-->L24-1: Formula: (and (= v_counter_45 (+ v_counter_46 v_C_22)) (= v_i1_12 (+ v_i1_13 1)) (< v_i1_13 v_N1_8)) InVars {counter=v_counter_46, i1=v_i1_13, C=v_C_22, N1=v_N1_8} OutVars{counter=v_counter_45, i1=v_i1_12, C=v_C_22, N1=v_N1_8} AuxVars[] AssignedVars[counter, i1] 53#[L73-1, L24-1]true [2023-10-12 17:30:58,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:58,236 INFO L85 PathProgramCache]: Analyzing trace with hash 5190, now seen corresponding path program 1 times [2023-10-12 17:30:58,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:58,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581055469] [2023-10-12 17:30:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:58,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:58,322 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:58,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:58,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:58,341 INFO L85 PathProgramCache]: Analyzing trace with hash 157, now seen corresponding path program 1 times [2023-10-12 17:30:58,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:58,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634345695] [2023-10-12 17:30:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:58,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:58,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:58,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:58,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash 161016, now seen corresponding path program 1 times [2023-10-12 17:30:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:58,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814689538] [2023-10-12 17:30:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:58,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:58,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:58,430 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:58,431 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:58,431 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:58,431 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:58,431 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:58,431 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:58,431 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:58,431 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:58,431 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-4.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:30:58,431 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:58,432 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:58,441 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 17:30:58,448 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 17:30:58,475 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:58,476 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:58,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:58,479 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 17:30:58,481 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 17:30:58,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:58,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:58,505 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:30:58,505 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {counter=0, C=0} Honda state: {counter=0, C=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:30:58,521 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 17:30:58,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:58,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:58,523 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 17:30:58,525 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 17:30:58,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:58,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:58,561 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 17:30:58,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:58,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:58,563 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 17:30:58,564 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 17:30:58,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:58,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:58,677 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:58,680 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 17:30:58,680 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:58,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:58,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:58,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:58,680 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:58,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:58,681 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:58,681 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:58,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-4.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:30:58,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:58,681 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:58,682 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 17:30:58,692 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 17:30:58,719 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:58,722 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:58,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:58,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:58,725 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 17:30:58,736 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 17:30:58,739 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 17:30:58,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:58,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:58,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:58,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:58,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:58,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:58,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:58,751 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:30:58,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:58,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:58,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:58,758 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 17:30:58,759 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 17:30:58,761 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 17:30:58,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:58,766 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:58,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:58,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:58,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:58,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:58,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:58,793 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:58,795 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:30:58,795 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:30:58,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:58,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:58,809 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 17:30:58,809 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 17:30:58,846 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:58,846 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:58,846 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:58,847 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N1, i1) = 1*N1 - 1*i1 Supporting invariants [] [2023-10-12 17:30:58,849 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 17:30:58,851 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:58,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:58,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:58,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:58,905 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:30:58,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:58,905 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 17:30:58,934 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:30:58,938 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 17:30:59,053 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 5 states and 316 transitions. [2023-10-12 17:30:59,054 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:59,056 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:59,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:30:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 17:30:59,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2023-10-12 17:30:59,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 216 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:30:59,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:59,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 216 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:30:59,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:59,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 216 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:30:59,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:59,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:59,124 INFO L124 PetriNetUnfolderBase]: 431/583 cut-off events. [2023-10-12 17:30:59,124 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-10-12 17:30:59,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 583 events. 431/583 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1614 event pairs, 67 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 968. Up to 203 conditions per place. [2023-10-12 17:30:59,126 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:59,129 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:59,129 INFO L430 stractBuchiCegarLoop]: Abstraction has has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:59,129 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:30:59,129 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:59,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:59,134 INFO L124 PetriNetUnfolderBase]: 25/39 cut-off events. [2023-10-12 17:30:59,134 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-10-12 17:30:59,135 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:59,135 INFO L748 eck$LassoCheckResult]: Stem: 49#[$Ultimate##0]true [133] $Ultimate##0-->L73: Formula: (and (= v_M1_10 v_N1_10) (= v_counter_59 0) (= v_i1_18 v_j2_22) (= v_i1_18 0) (< 0 v_C_28) (= v_i1_18 v_j1_18) (= v_i1_18 v_i2_22) (= v_M2_10 v_N1_10) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_59, i1=v_i1_18, j2=v_j2_22, i2=v_i2_22, j1=v_j1_18, N2=v_N2_10, M1=v_M1_10, M2=v_M2_10, C=v_C_28, N1=v_N1_10} OutVars{counter=v_counter_59, i1=v_i1_18, j2=v_j2_22, i2=v_i2_22, j1=v_j1_18, N2=v_N2_10, M1=v_M1_10, M2=v_M2_10, C=v_C_28, N1=v_N1_10} AuxVars[] AssignedVars[] 51#[L73]true [106] L73-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 53#[L73-1, L24-1]true [109] L73-1-->L35-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 98#[L74, L24-1, L35-1]true [2023-10-12 17:30:59,135 INFO L750 eck$LassoCheckResult]: Loop: 98#[L74, L24-1, L35-1]true [122] L35-1-->L35-1: Formula: (and (< v_i2_17 v_N2_8) (= (+ v_i2_17 1) v_i2_16) (= v_counter_38 (+ v_counter_37 v_C_20)) (< 0 v_counter_38)) InVars {counter=v_counter_38, i2=v_i2_17, N2=v_N2_8, C=v_C_20} OutVars{counter=v_counter_37, i2=v_i2_16, N2=v_N2_8, C=v_C_20} AuxVars[] AssignedVars[counter, i2] 98#[L74, L24-1, L35-1]true [122] L35-1-->L35-1: Formula: (and (< v_i2_17 v_N2_8) (= (+ v_i2_17 1) v_i2_16) (= v_counter_38 (+ v_counter_37 v_C_20)) (< 0 v_counter_38)) InVars {counter=v_counter_38, i2=v_i2_17, N2=v_N2_8, C=v_C_20} OutVars{counter=v_counter_37, i2=v_i2_16, N2=v_N2_8, C=v_C_20} AuxVars[] AssignedVars[counter, i2] 98#[L74, L24-1, L35-1]true [2023-10-12 17:30:59,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash 160999, now seen corresponding path program 1 times [2023-10-12 17:30:59,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:59,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733580522] [2023-10-12 17:30:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:59,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:59,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:59,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:59,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:59,143 INFO L85 PathProgramCache]: Analyzing trace with hash 4865, now seen corresponding path program 1 times [2023-10-12 17:30:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:59,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854425717] [2023-10-12 17:30:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:59,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:59,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:59,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:59,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 154723943, now seen corresponding path program 1 times [2023-10-12 17:30:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:59,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443841566] [2023-10-12 17:30:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:59,189 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 17:30:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443841566] [2023-10-12 17:30:59,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443841566] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:30:59,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:30:59,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:30:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872741006] [2023-10-12 17:30:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:30:59,238 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:59,238 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:59,238 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:59,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:59,239 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:59,239 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:59,239 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:59,239 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:59,239 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-4.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:30:59,239 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:59,239 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:59,239 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 17:30:59,245 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 17:30:59,268 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:59,268 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:59,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:59,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:59,287 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 17:30:59,287 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 17:30:59,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:59,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:59,310 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:30:59,311 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {counter=1, C=0} Honda state: {counter=1, C=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:30:59,313 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 17:30:59,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:59,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:59,315 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 17:30:59,317 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 17:30:59,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:59,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:59,346 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 17:30:59,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:59,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:59,348 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 17:30:59,350 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 17:30:59,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:59,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:59,576 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:59,579 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 17:30:59,579 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:59,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:59,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:59,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:59,580 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:59,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:59,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:59,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:59,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-4.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:30:59,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:59,580 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:59,581 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 17:30:59,614 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 17:30:59,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-10-12 17:30:59,647 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:59,647 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:59,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:59,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:59,648 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 17:30:59,651 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 17:30:59,652 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 17:30:59,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:59,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:59,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:59,658 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:59,658 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:59,659 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:59,659 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:59,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:30:59,670 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 17:30:59,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:59,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:59,672 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 17:30:59,676 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 17:30:59,678 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 17:30:59,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:59,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:59,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:59,684 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:59,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:59,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:59,686 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:59,696 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:59,710 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:30:59,710 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:30:59,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:59,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:59,711 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 17:30:59,713 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 17:30:59,714 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:59,714 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:59,715 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:59,715 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N2) = -1*i2 + 1*N2 Supporting invariants [] [2023-10-12 17:30:59,722 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 17:30:59,723 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:59,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:59,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:59,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:59,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:59,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:59,757 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 17:30:59,757 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 17:30:59,757 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 17:30:59,860 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 419 transitions. [2023-10-12 17:30:59,860 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:59,877 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:59,878 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 17:30:59,878 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 17:30:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2023-10-12 17:30:59,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 270 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:30:59,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:59,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 270 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:30:59,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:59,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 270 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:30:59,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:59,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 3400 transitions, 25008 flow [2023-10-12 17:31:00,064 INFO L124 PetriNetUnfolderBase]: 1314/1731 cut-off events. [2023-10-12 17:31:00,064 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-10-12 17:31:00,067 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 17:31:00,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 1731 events. 1314/1731 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5838 event pairs, 122 based on Foata normal form. 0/931 useless extension candidates. Maximal degree in co-relation 4078. Up to 622 conditions per place. [2023-10-12 17:31:00,069 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 52 places, 3400 transitions, 25008 flow [2023-10-12 17:31:00,097 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 52 places, 3400 transitions, 25008 flow [2023-10-12 17:31:00,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:31:00,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:31:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:31:00,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 3400 transitions, 25008 flow. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:31:00,100 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:31:00,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:31:00,399 INFO L124 PetriNetUnfolderBase]: 1621/2213 cut-off events. [2023-10-12 17:31:00,399 INFO L125 PetriNetUnfolderBase]: For 467/467 co-relation queries the response was YES. [2023-10-12 17:31:00,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9478 conditions, 2213 events. 1621/2213 cut-off events. For 467/467 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8304 event pairs, 104 based on Foata normal form. 4/1307 useless extension candidates. Maximal degree in co-relation 7308. Up to 1826 conditions per place. [2023-10-12 17:31:00,410 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 234 selfloop transitions, 14 changer transitions 68/316 dead transitions. [2023-10-12 17:31:00,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 316 transitions, 2903 flow [2023-10-12 17:31:00,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 316 transitions, 2903 flow [2023-10-12 17:31:00,498 INFO L124 PetriNetUnfolderBase]: 1621/2213 cut-off events. [2023-10-12 17:31:00,498 INFO L125 PetriNetUnfolderBase]: For 467/467 co-relation queries the response was YES. [2023-10-12 17:31:00,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9478 conditions, 2213 events. 1621/2213 cut-off events. For 467/467 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8283 event pairs, 104 based on Foata normal form. 0/1303 useless extension candidates. Maximal degree in co-relation 7308. Up to 1826 conditions per place. [2023-10-12 17:31:00,500 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 44 places, 316 transitions, 2903 flow [2023-10-12 17:31:00,515 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 44 places, 316 transitions, 2903 flow [2023-10-12 17:31:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:31:00,516 INFO L430 stractBuchiCegarLoop]: Abstraction has has 44 places, 316 transitions, 2903 flow [2023-10-12 17:31:00,516 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:31:00,516 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 44 places, 316 transitions, 2903 flow [2023-10-12 17:31:00,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:31:00,545 INFO L124 PetriNetUnfolderBase]: 339/461 cut-off events. [2023-10-12 17:31:00,545 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-10-12 17:31:00,545 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:31:00,546 INFO L748 eck$LassoCheckResult]: Stem: 49#[$Ultimate##0]true [133] $Ultimate##0-->L73: Formula: (and (= v_M1_10 v_N1_10) (= v_counter_59 0) (= v_i1_18 v_j2_22) (= v_i1_18 0) (< 0 v_C_28) (= v_i1_18 v_j1_18) (= v_i1_18 v_i2_22) (= v_M2_10 v_N1_10) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_59, i1=v_i1_18, j2=v_j2_22, i2=v_i2_22, j1=v_j1_18, N2=v_N2_10, M1=v_M1_10, M2=v_M2_10, C=v_C_28, N1=v_N1_10} OutVars{counter=v_counter_59, i1=v_i1_18, j2=v_j2_22, i2=v_i2_22, j1=v_j1_18, N2=v_N2_10, M1=v_M1_10, M2=v_M2_10, C=v_C_28, N1=v_N1_10} AuxVars[] AssignedVars[] 51#[L73]true [106] L73-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 53#[L73-1, L24-1]true [109] L73-1-->L35-1: 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#[L74, L24-1, L35-1]true [126] L24-1-->L24-1: Formula: (and (= v_counter_45 (+ v_counter_46 v_C_22)) (= v_i1_12 (+ v_i1_13 1)) (< v_i1_13 v_N1_8)) InVars {counter=v_counter_46, i1=v_i1_13, C=v_C_22, N1=v_N1_8} OutVars{counter=v_counter_45, i1=v_i1_12, C=v_C_22, N1=v_N1_8} AuxVars[] AssignedVars[counter, i1] 98#[L74, L24-1, L35-1]true [112] L74-->L47-1: 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] 154#[L75, L47-1, L24-1, L35-1]true [121] L35-1-->thread2EXIT: Formula: (<= v_N2_6 v_i2_14) InVars {i2=v_i2_14, N2=v_N2_6} OutVars{i2=v_i2_14, N2=v_N2_6} AuxVars[] AssignedVars[] 156#[L75, L47-1, thread2EXIT, L24-1]true [128] L47-1-->L47-1: Formula: (and (= v_counter_49 (+ v_counter_50 v_C_24)) (< v_j1_13 v_M1_8) (= (+ v_j1_13 1) v_j1_12)) InVars {counter=v_counter_50, j1=v_j1_13, M1=v_M1_8, C=v_C_24} OutVars{counter=v_counter_49, j1=v_j1_12, M1=v_M1_8, C=v_C_24} AuxVars[] AssignedVars[counter, j1] 156#[L75, L47-1, thread2EXIT, L24-1]true [2023-10-12 17:31:00,546 INFO L750 eck$LassoCheckResult]: Loop: 156#[L75, L47-1, thread2EXIT, L24-1]true [128] L47-1-->L47-1: Formula: (and (= v_counter_49 (+ v_counter_50 v_C_24)) (< v_j1_13 v_M1_8) (= (+ v_j1_13 1) v_j1_12)) InVars {counter=v_counter_50, j1=v_j1_13, M1=v_M1_8, C=v_C_24} OutVars{counter=v_counter_49, j1=v_j1_12, M1=v_M1_8, C=v_C_24} AuxVars[] AssignedVars[counter, j1] 156#[L75, L47-1, thread2EXIT, L24-1]true [128] L47-1-->L47-1: Formula: (and (= v_counter_49 (+ v_counter_50 v_C_24)) (< v_j1_13 v_M1_8) (= (+ v_j1_13 1) v_j1_12)) InVars {counter=v_counter_50, j1=v_j1_13, M1=v_M1_8, C=v_C_24} OutVars{counter=v_counter_49, j1=v_j1_12, M1=v_M1_8, C=v_C_24} AuxVars[] AssignedVars[counter, j1] 156#[L75, L47-1, thread2EXIT, L24-1]true [2023-10-12 17:31:00,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1634032704, now seen corresponding path program 1 times [2023-10-12 17:31:00,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:00,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50910878] [2023-10-12 17:31:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:00,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:00,585 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 17:31:00,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:31:00,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50910878] [2023-10-12 17:31:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50910878] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:31:00,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:31:00,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-10-12 17:31:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269343730] [2023-10-12 17:31:00,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:31:00,586 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-10-12 17:31:00,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash 5057, now seen corresponding path program 1 times [2023-10-12 17:31:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:00,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44742328] [2023-10-12 17:31:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:00,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:00,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:00,628 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:00,631 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:00,631 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:00,631 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:00,631 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:31:00,631 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:00,631 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:00,631 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:00,631 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-4.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:31:00,631 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:00,631 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:00,632 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 17:31:00,637 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 17:31:00,655 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:00,655 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:31:00,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:00,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:00,657 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 17:31:00,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:31:00,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:00,677 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 17:31:00,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-10-12 17:31:00,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:00,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:00,706 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 17:31:00,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:31:00,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:00,736 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 17:31:00,892 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:31:00,912 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 17:31:00,912 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:00,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:00,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:00,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:00,912 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:31:00,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:00,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:00,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:00,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-4.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:31:00,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:00,912 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:00,913 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 17:31:00,918 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 17:31:00,937 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:00,937 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:31:00,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:00,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:00,938 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 17:31:00,951 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 17:31:00,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:31:00,957 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:31:00,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:31:00,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:31:00,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:31:00,958 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:31:00,958 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:31:00,960 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:31:00,967 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 17:31:00,969 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:31:00,969 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:31:00,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:00,970 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 17:31:00,972 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 17:31:00,973 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:31:00,974 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:31:00,974 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:31:00,974 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j1, M1) = -1*j1 + 1*M1 Supporting invariants [] [2023-10-12 17:31:00,976 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 17:31:00,977 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:31:00,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:00,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:31:00,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:01,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:31:01,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:01,022 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 17:31:01,022 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 17:31:01,022 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 17:31:01,143 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 419 transitions. [2023-10-12 17:31:01,143 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:31:01,162 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:31:01,162 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 17:31:01,163 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 17:31:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2023-10-12 17:31:01,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 270 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:31:01,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:01,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 270 transitions. Stem has 9 letters. Loop has 2 letters. [2023-10-12 17:31:01,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:01,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 270 transitions. Stem has 7 letters. Loop has 4 letters. [2023-10-12 17:31:01,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:01,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 4900 transitions, 55000 flow [2023-10-12 17:31:01,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-10-12 17:31:02,451 INFO L124 PetriNetUnfolderBase]: 5136/6758 cut-off events. [2023-10-12 17:31:02,451 INFO L125 PetriNetUnfolderBase]: For 1474/1474 co-relation queries the response was YES. [2023-10-12 17:31:02,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35430 conditions, 6758 events. 5136/6758 cut-off events. For 1474/1474 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 28317 event pairs, 114 based on Foata normal form. 0/3695 useless extension candidates. Maximal degree in co-relation 24676. Up to 6371 conditions per place. [2023-10-12 17:31:02,455 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 58 places, 4900 transitions, 55000 flow [2023-10-12 17:31:02,497 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 58 places, 4900 transitions, 55000 flow [2023-10-12 17:31:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:31:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:31:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:31:02,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 4900 transitions, 55000 flow. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:31:02,498 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:31:02,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:31:05,327 INFO L124 PetriNetUnfolderBase]: 9454/12716 cut-off events. [2023-10-12 17:31:05,327 INFO L125 PetriNetUnfolderBase]: For 3042/3042 co-relation queries the response was YES. [2023-10-12 17:31:05,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79431 conditions, 12716 events. 9454/12716 cut-off events. For 3042/3042 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 62234 event pairs, 107 based on Foata normal form. 227/7327 useless extension candidates. Maximal degree in co-relation 53826. Up to 12329 conditions per place. [2023-10-12 17:31:05,468 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 1197 selfloop transitions, 50 changer transitions 401/1648 dead transitions. [2023-10-12 17:31:05,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 1648 transitions, 21546 flow [2023-10-12 17:31:05,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 1648 transitions, 21546 flow [2023-10-12 17:31:06,759 INFO L124 PetriNetUnfolderBase]: 9454/12716 cut-off events. [2023-10-12 17:31:06,759 INFO L125 PetriNetUnfolderBase]: For 3042/3042 co-relation queries the response was YES. [2023-10-12 17:31:06,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79431 conditions, 12716 events. 9454/12716 cut-off events. For 3042/3042 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 62304 event pairs, 107 based on Foata normal form. 0/7100 useless extension candidates. Maximal degree in co-relation 53826. Up to 12329 conditions per place. [2023-10-12 17:31:06,768 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 55 places, 1648 transitions, 21546 flow [2023-10-12 17:31:06,786 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 55 places, 1648 transitions, 21546 flow [2023-10-12 17:31:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-10-12 17:31:06,790 INFO L430 stractBuchiCegarLoop]: Abstraction has has 55 places, 1648 transitions, 21546 flow [2023-10-12 17:31:06,790 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:31:06,790 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 55 places, 1648 transitions, 21546 flow [2023-10-12 17:31:06,878 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:31:06,878 INFO L124 PetriNetUnfolderBase]: 330/480 cut-off events. [2023-10-12 17:31:06,878 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-10-12 17:31:06,878 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:31:06,879 INFO L748 eck$LassoCheckResult]: Stem: 49#[$Ultimate##0]true [133] $Ultimate##0-->L73: Formula: (and (= v_M1_10 v_N1_10) (= v_counter_59 0) (= v_i1_18 v_j2_22) (= v_i1_18 0) (< 0 v_C_28) (= v_i1_18 v_j1_18) (= v_i1_18 v_i2_22) (= v_M2_10 v_N1_10) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_59, i1=v_i1_18, j2=v_j2_22, i2=v_i2_22, j1=v_j1_18, N2=v_N2_10, M1=v_M1_10, M2=v_M2_10, C=v_C_28, N1=v_N1_10} OutVars{counter=v_counter_59, i1=v_i1_18, j2=v_j2_22, i2=v_i2_22, j1=v_j1_18, N2=v_N2_10, M1=v_M1_10, M2=v_M2_10, C=v_C_28, N1=v_N1_10} AuxVars[] AssignedVars[] 51#[L73]true [106] L73-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 53#[L73-1, L24-1]true [109] L73-1-->L35-1: 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#[L74, L24-1, L35-1]true [112] L74-->L47-1: 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] 154#[L75, L47-1, L24-1, L35-1]true [126] L24-1-->L24-1: Formula: (and (= v_counter_45 (+ v_counter_46 v_C_22)) (= v_i1_12 (+ v_i1_13 1)) (< v_i1_13 v_N1_8)) InVars {counter=v_counter_46, i1=v_i1_13, C=v_C_22, N1=v_N1_8} OutVars{counter=v_counter_45, i1=v_i1_12, C=v_C_22, N1=v_N1_8} AuxVars[] AssignedVars[counter, i1] 154#[L75, L47-1, L24-1, L35-1]true [115] L75-->L58-1: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2] 225#[L58-1, L47-1, L24-1, L35-1, L76]true [130] L58-1-->L58-1: Formula: (and (< 0 v_counter_54) (= v_j2_16 (+ v_j2_17 1)) (< v_j2_17 v_M2_8) (= v_counter_54 (+ v_counter_53 v_C_26))) InVars {counter=v_counter_54, j2=v_j2_17, M2=v_M2_8, C=v_C_26} OutVars{counter=v_counter_53, j2=v_j2_16, M2=v_M2_8, C=v_C_26} AuxVars[] AssignedVars[counter, j2] 225#[L58-1, L47-1, L24-1, L35-1, L76]true [2023-10-12 17:31:06,879 INFO L750 eck$LassoCheckResult]: Loop: 225#[L58-1, L47-1, L24-1, L35-1, L76]true [130] L58-1-->L58-1: Formula: (and (< 0 v_counter_54) (= v_j2_16 (+ v_j2_17 1)) (< v_j2_17 v_M2_8) (= v_counter_54 (+ v_counter_53 v_C_26))) InVars {counter=v_counter_54, j2=v_j2_17, M2=v_M2_8, C=v_C_26} OutVars{counter=v_counter_53, j2=v_j2_16, M2=v_M2_8, C=v_C_26} AuxVars[] AssignedVars[counter, j2] 225#[L58-1, L47-1, L24-1, L35-1, L76]true [130] L58-1-->L58-1: Formula: (and (< 0 v_counter_54) (= v_j2_16 (+ v_j2_17 1)) (< v_j2_17 v_M2_8) (= v_counter_54 (+ v_counter_53 v_C_26))) InVars {counter=v_counter_54, j2=v_j2_17, M2=v_M2_8, C=v_C_26} OutVars{counter=v_counter_53, j2=v_j2_16, M2=v_M2_8, C=v_C_26} AuxVars[] AssignedVars[counter, j2] 225#[L58-1, L47-1, L24-1, L35-1, L76]true [2023-10-12 17:31:06,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1634436508, now seen corresponding path program 1 times [2023-10-12 17:31:06,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:06,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56242794] [2023-10-12 17:31:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:06,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:06,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:06,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:06,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash 5121, now seen corresponding path program 1 times [2023-10-12 17:31:06,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:06,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950130265] [2023-10-12 17:31:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:06,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:06,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:31:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:31:06,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:31:06,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1264550308, now seen corresponding path program 2 times [2023-10-12 17:31:06,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:31:06,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811369116] [2023-10-12 17:31:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:31:06,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:31:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:31:06,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:31:06,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811369116] [2023-10-12 17:31:06,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811369116] provided 0 perfect and 1 imperfect interpolant sequences [2023-10-12 17:31:06,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105717880] [2023-10-12 17:31:06,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-10-12 17:31:06,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-10-12 17:31:06,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:06,997 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-10-12 17:31:07,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-10-12 17:31:07,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-10-12 17:31:07,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-10-12 17:31:07,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:31:07,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:31:07,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-10-12 17:31:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:31:07,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105717880] provided 0 perfect and 2 imperfect interpolant sequences [2023-10-12 17:31:07,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-10-12 17:31:07,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2023-10-12 17:31:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767388602] [2023-10-12 17:31:07,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-10-12 17:31:07,161 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:07,161 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:07,161 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:07,161 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:07,161 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:31:07,161 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:07,161 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:07,161 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:07,161 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-4.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:31:07,161 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:07,161 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:07,163 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 17:31:07,167 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 17:31:07,189 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:07,189 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:31:07,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:07,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:07,190 INFO L229 MonitoredProcess]: Starting monitored process 19 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 17:31:07,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:31:07,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:07,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-10-12 17:31:07,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-10-12 17:31:07,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:07,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:07,245 INFO L229 MonitoredProcess]: Starting monitored process 20 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 17:31:07,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:31:07,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:31:07,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-10-12 17:31:07,512 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:31:07,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-10-12 17:31:07,516 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:31:07,516 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:31:07,517 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:31:07,517 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:31:07,517 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:31:07,517 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:07,517 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:31:07,517 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:31:07,517 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-4.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:31:07,517 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:31:07,517 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:31:07,518 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 17:31:07,522 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 17:31:07,555 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:31:07,555 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:31:07,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:07,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:07,557 INFO L229 MonitoredProcess]: Starting monitored process 21 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 17:31:07,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-10-12 17:31:07,575 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 17:31:07,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:31:07,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:31:07,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:31:07,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:31:07,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:31:07,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:31:07,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:31:07,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:31:07,600 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:31:07,600 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:31:07,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:31:07,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:31:07,602 INFO L229 MonitoredProcess]: Starting monitored process 22 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 17:31:07,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-10-12 17:31:07,614 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:31:07,614 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:31:07,614 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:31:07,614 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j2, M2) = -1*j2 + 1*M2 Supporting invariants [] [2023-10-12 17:31:07,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-10-12 17:31:07,618 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:31:07,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:31:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:07,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:31:07,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:31:07,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:31:07,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:31:07,660 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 17:31:07,660 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 17:31:07,660 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 17:31:07,770 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 419 transitions. [2023-10-12 17:31:07,770 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:31:07,929 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:31:07,930 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 17:31:07,934 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 17:31:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2023-10-12 17:31:07,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 270 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:31:07,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:07,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 270 transitions. Stem has 9 letters. Loop has 2 letters. [2023-10-12 17:31:07,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:07,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 270 transitions. Stem has 7 letters. Loop has 4 letters. [2023-10-12 17:31:07,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:31:07,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 25438 transitions, 384452 flow [2023-10-12 17:31:10,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-10-12 17:32:32,263 INFO L124 PetriNetUnfolderBase]: 29318/39140 cut-off events. [2023-10-12 17:32:32,263 INFO L125 PetriNetUnfolderBase]: For 10444/10444 co-relation queries the response was YES. [2023-10-12 17:32:32,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281063 conditions, 39140 events. 29318/39140 cut-off events. For 10444/10444 co-relation queries the response was YES. Maximal size of possible extension queue 2133. Compared 219391 event pairs, 107 based on Foata normal form. 0/21142 useless extension candidates. Maximal degree in co-relation 186689. Up to 38753 conditions per place. [2023-10-12 17:32:32,309 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 69 places, 25438 transitions, 384452 flow [2023-10-12 17:32:32,624 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 69 places, 25438 transitions, 384452 flow [2023-10-12 17:32:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:32:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-10-12 17:32:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-10-12 17:32:32,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 25438 transitions, 384452 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 17:32:32,625 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:32:32,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:35:30,989 INFO L124 PetriNetUnfolderBase]: 55286/76500 cut-off events. [2023-10-12 17:35:30,989 INFO L125 PetriNetUnfolderBase]: For 21938/21938 co-relation queries the response was YES. [2023-10-12 17:35:31,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626544 conditions, 76500 events. 55286/76500 cut-off events. For 21938/21938 co-relation queries the response was YES. Maximal size of possible extension queue 4338. Compared 509223 event pairs, 300 based on Foata normal form. 252/44657 useless extension candidates. Maximal degree in co-relation 466745. Up to 76113 conditions per place. [2023-10-12 17:35:31,298 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 6363 selfloop transitions, 952 changer transitions 4397/11712 dead transitions. [2023-10-12 17:35:31,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 11712 transitions, 199203 flow [2023-10-12 17:35:31,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 11712 transitions, 199203 flow Received shutdown request... [2023-10-12 17:35:38,942 WARN L144 chiPetriNetCegarLoop]: Unhandled de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user.occured during abstraction size reduction. Continuing with non-reduced net [2023-10-12 17:35:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-10-12 17:35:38,943 INFO L430 stractBuchiCegarLoop]: Abstraction has has 67 places, 11712 transitions, 199203 flow [2023-10-12 17:35:38,943 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:35:38,943 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 67 places, 11712 transitions, 199203 flow [2023-10-12 17:35:38,948 WARN L343 stractBuchiCegarLoop]: Verification cancelled [2023-10-12 17:35:38,952 INFO L201 PluginConnector]: Adding new model mult-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:35:38 BoogieIcfgContainer [2023-10-12 17:35:38,952 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:35:38,953 INFO L158 Benchmark]: Toolchain (without parser) took 281546.75ms. Allocated memory was 216.0MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 167.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-10-12 17:35:38,953 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.28ms. Allocated memory is still 216.0MB. Free memory is still 168.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:35:38,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.69ms. Allocated memory is still 216.0MB. Free memory was 167.3MB in the beginning and 165.8MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-10-12 17:35:38,953 INFO L158 Benchmark]: Boogie Preprocessor took 19.66ms. Allocated memory is still 216.0MB. Free memory was 165.6MB in the beginning and 164.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:35:38,956 INFO L158 Benchmark]: RCFGBuilder took 256.81ms. Allocated memory is still 216.0MB. Free memory was 164.6MB in the beginning and 182.7MB in the end (delta: -18.1MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2023-10-12 17:35:38,956 INFO L158 Benchmark]: BuchiAutomizer took 281238.85ms. Allocated memory was 216.0MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 182.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-10-12 17:35:38,958 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 0.28ms. Allocated memory is still 216.0MB. Free memory is still 168.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.69ms. Allocated memory is still 216.0MB. Free memory was 167.3MB in the beginning and 165.8MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.66ms. Allocated memory is still 216.0MB. Free memory was 165.6MB in the beginning and 164.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 256.81ms. Allocated memory is still 216.0MB. Free memory was 164.6MB in the beginning and 182.7MB in the end (delta: -18.1MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 281238.85ms. Allocated memory was 216.0MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 182.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 2.6GB. 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 7 terminating modules (3 trivial, 4 deterministic, 0 nondeterministic) and one module whose termination is unknown.One deterministic module has affine ranking function N1 + -1 * i1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i2 + N2 and consists of 5 locations. One deterministic module has affine ranking function -1 * j1 + M1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j2 + M2 and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 199203 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 281.1s and 5 iterations. TraceHistogramMax:0. Analysis of lassos took 2.3s. Construction of modules took 0.3s. Büchi inclusion checks took 191.5s. 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 [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 3/3 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 631 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 627 mSDsluCounter, 499 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 230 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 724 IncrementalHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 269 mSDtfsCounter, 724 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp63 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp100 dnf100 smp100 tf110 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.3s - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Buchi Automizer is unable to decide termination: Timeout while executing PetriNetUnfolderBuchi. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 41 PlacesBefore, 28 PlacesAfterwards, 32 TransitionsBefore, 19 TransitionsAfterwards, 288 CoEnabledTransitionPairs, 2 FixpointIterations, 6 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 14 TotalNumberOfCompositions, 207 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 207, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 207, independent: 45, independent conditional: 0, independent unconditional: 45, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 162, unknown conditional: 0, unknown unconditional: 162] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate could not prove your program: Timeout [2023-10-12 17:35:38,972 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-10-12 17:35:38,972 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-10-12 17:35:38,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 Completed graceful shutdown