/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/difference-det.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:30:35,429 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:30:35,496 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 17:30:35,522 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:30:35,523 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:30:35,523 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:30:35,524 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:30:35,525 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:30:35,525 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:30:35,528 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:30:35,528 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:30:35,528 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:30:35,528 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:30:35,529 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:30:35,530 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:30:35,530 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:30:35,530 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:30:35,530 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:30:35,531 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:30:35,531 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:30:35,531 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:30:35,531 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:30:35,531 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:30:35,532 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:30:35,532 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:30:35,532 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:30:35,532 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:30:35,532 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:30:35,532 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:30:35,532 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:30:35,533 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:30:35,533 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:30:35,533 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:30:35,535 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:30:35,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:30:35,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:30:35,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:30:35,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:30:35,753 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:30:35,754 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:30:35,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl [2023-10-12 17:30:35,755 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl' [2023-10-12 17:30:35,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:30:35,778 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:30:35,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:30:35,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:30:35,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:30:35,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,801 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:30:35,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:30:35,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:30:35,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:30:35,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:30:35,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:30:35,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:30:35,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:30:35,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:30:35,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/1) ... [2023-10-12 17:30:35,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:35,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:35,844 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 17:30:35,847 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 17:30:35,870 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:30:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:30:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:30:35,873 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:30:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:30:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:30:35,874 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:30:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:30:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:30:35,874 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:30:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:30:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:30:35,874 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2023-10-12 17:30:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-10-12 17:30:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-10-12 17:30:35,875 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 17:30:35,918 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:30:35,920 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:30:36,016 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:30:36,036 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:30:36,036 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:30:36,038 INFO L201 PluginConnector]: Adding new model difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:30:36 BoogieIcfgContainer [2023-10-12 17:30:36,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:30:36,039 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:30:36,039 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:30:36,047 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:30:36,047 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:30:36,048 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:35" (1/2) ... [2023-10-12 17:30:36,049 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@108b9c and model type difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:30:36, skipping insertion in model container [2023-10-12 17:30:36,049 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:30:36,049 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:30:36" (2/2) ... [2023-10-12 17:30:36,050 INFO L332 chiAutomizerObserver]: Analyzing ICFG difference-det.wvr.bpl [2023-10-12 17:30:36,147 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-10-12 17:30:36,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 44 transitions, 120 flow [2023-10-12 17:30:36,215 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-10-12 17:30:36,215 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:30:36,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-10-12 17:30:36,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 44 transitions, 120 flow [2023-10-12 17:30:36,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 36 transitions, 96 flow [2023-10-12 17:30:36,230 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:30:36,257 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 36 transitions, 96 flow [2023-10-12 17:30:36,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 36 transitions, 96 flow [2023-10-12 17:30:36,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 36 transitions, 96 flow [2023-10-12 17:30:36,269 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-10-12 17:30:36,269 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:30:36,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-10-12 17:30:36,273 INFO L119 LiptonReduction]: Number of co-enabled transitions 288 [2023-10-12 17:30:36,639 INFO L134 LiptonReduction]: Checked pairs total: 279 [2023-10-12 17:30:36,639 INFO L136 LiptonReduction]: Total number of compositions: 18 [2023-10-12 17:30:36,649 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:30:36,649 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:30:36,649 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:30:36,649 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:30:36,649 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:30:36,649 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:30:36,649 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:30:36,649 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:30:36,650 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:30:36,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:36,652 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:30:36,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:30:36,652 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:36,654 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:30:36,654 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:30:36,655 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:36,655 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:30:36,655 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:30:36,655 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:36,658 INFO L748 eck$LassoCheckResult]: Stem: 53#[$Ultimate##0]true [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]true [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L77-1, L24-1]true [2023-10-12 17:30:36,658 INFO L750 eck$LassoCheckResult]: Loop: 57#[L77-1, L24-1]true [134] L24-1-->L24-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_27 1) v_counter1_26) (< v_i1_13 v_N1_8)) InVars {counter1=v_counter1_27, i1=v_i1_13, N1=v_N1_8} OutVars{counter1=v_counter1_26, i1=v_i1_12, N1=v_N1_8} AuxVars[] AssignedVars[counter1, i1] 57#[L77-1, L24-1]true [2023-10-12 17:30:36,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:36,661 INFO L85 PathProgramCache]: Analyzing trace with hash 5570, now seen corresponding path program 1 times [2023-10-12 17:30:36,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:36,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737460778] [2023-10-12 17:30:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:36,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:36,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:36,777 INFO L85 PathProgramCache]: Analyzing trace with hash 165, now seen corresponding path program 1 times [2023-10-12 17:30:36,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:36,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829036313] [2023-10-12 17:30:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:36,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:36,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:36,797 INFO L85 PathProgramCache]: Analyzing trace with hash 172804, now seen corresponding path program 1 times [2023-10-12 17:30:36,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:36,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474712660] [2023-10-12 17:30:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:36,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:36,870 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:36,873 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:36,873 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:36,873 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:36,874 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:36,874 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,874 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:36,874 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:36,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:30:36,874 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:36,875 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:36,886 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 17:30:36,897 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 17:30:36,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:36,932 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:36,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:36,937 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 17:30:36,938 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 17:30:36,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:36,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:36,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:36,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:36,973 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 17:30:36,974 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 17:30:36,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:36,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:37,104 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:37,108 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 17:30:37,108 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:37,108 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:37,108 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:37,108 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:37,108 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:37,108 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,108 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:37,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:37,109 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:30:37,109 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:37,109 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:37,110 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 17:30:37,118 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:30:37,146 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:37,149 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:37,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:37,151 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 17:30:37,153 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 17:30:37,154 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 17:30:37,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:37,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:37,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:37,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:37,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:37,166 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:37,166 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:37,185 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:37,205 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:30:37,205 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:30:37,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:37,209 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 17:30:37,209 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 17:30:37,211 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:37,211 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:37,211 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:37,212 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N1) = -1*i1 + 1*N1 Supporting invariants [] [2023-10-12 17:30:37,217 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 17:30:37,222 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:37,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:37,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:37,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:37,272 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:30:37,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:37,273 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 17:30:37,293 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 17:30:37,295 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 17:30:37,418 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 364 transitions. [2023-10-12 17:30:37,419 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:37,424 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:37,426 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 17:30:37,432 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 17:30:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-10-12 17:30:37,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:30:37,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:37,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:30:37,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:37,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:30:37,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:37,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:37,516 INFO L124 PetriNetUnfolderBase]: 431/583 cut-off events. [2023-10-12 17:30:37,516 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2023-10-12 17:30:37,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 583 events. 431/583 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1646 event pairs, 58 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 17:30:37,518 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:37,521 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:37,521 INFO L430 stractBuchiCegarLoop]: Abstraction has has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:37,521 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:30:37,521 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:37,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:37,525 INFO L124 PetriNetUnfolderBase]: 23/36 cut-off events. [2023-10-12 17:30:37,525 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-10-12 17:30:37,525 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:37,526 INFO L748 eck$LassoCheckResult]: Stem: 53#[$Ultimate##0]true [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]true [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L77-1, L24-1]true [117] L77-1-->L35-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 102#[L78, L24-1, L35-1]true [2023-10-12 17:30:37,526 INFO L750 eck$LassoCheckResult]: Loop: 102#[L78, L24-1, L35-1]true [132] L35-1-->L35-1: Formula: (and (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23) (< v_i2_17 v_N2_6)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_6} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_6} AuxVars[] AssignedVars[counter1, i2] 102#[L78, L24-1, L35-1]true [132] L35-1-->L35-1: Formula: (and (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23) (< v_i2_17 v_N2_6)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_6} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_6} AuxVars[] AssignedVars[counter1, i2] 102#[L78, L24-1, L35-1]true [2023-10-12 17:30:37,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash 172787, now seen corresponding path program 1 times [2023-10-12 17:30:37,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:37,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898195609] [2023-10-12 17:30:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:37,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:37,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:37,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:37,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash 5185, now seen corresponding path program 1 times [2023-10-12 17:30:37,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:37,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155206334] [2023-10-12 17:30:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:37,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:37,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:37,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:37,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:37,548 INFO L85 PathProgramCache]: Analyzing trace with hash 166052531, now seen corresponding path program 1 times [2023-10-12 17:30:37,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:37,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148874381] [2023-10-12 17:30:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:37,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:37,582 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 17:30:37,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:37,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148874381] [2023-10-12 17:30:37,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148874381] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:30:37,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:30:37,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:30:37,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438323369] [2023-10-12 17:30:37,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:30:37,641 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:37,641 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:37,641 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:37,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:37,641 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:37,641 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,641 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:37,642 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:37,643 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:30:37,643 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:37,643 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:37,644 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 17:30:37,649 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 17:30:37,673 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:37,673 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:37,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:37,677 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 17:30:37,680 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 17:30:37,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:37,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:37,707 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 17:30:37,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:37,709 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 17:30:37,711 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 17:30:37,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:37,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:37,752 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:37,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:37,759 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:37,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:37,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:37,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:37,759 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:37,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:37,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:37,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:30:37,759 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:37,759 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:37,760 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 17:30:37,765 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 17:30:37,790 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:37,790 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:37,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:37,793 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 17:30:37,796 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 17:30:37,797 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 17:30:37,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:37,805 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:37,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:37,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:37,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:37,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:37,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:37,820 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:37,822 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-10-12 17:30:37,822 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:30:37,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:37,888 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 17:30:37,890 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 17:30:37,892 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:37,892 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:37,892 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:37,892 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter1) = 1*counter1 Supporting invariants [] [2023-10-12 17:30:37,898 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 17:30:37,898 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:37,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:37,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:37,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:37,935 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 17:30:37,943 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 17:30:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:37,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:37,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:37,968 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 17:30:37,969 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 17:30:37,969 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 17:30:38,081 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 6 states and 420 transitions. [2023-10-12 17:30:38,081 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:38,098 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:38,099 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 17:30:38,099 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 17:30:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-10-12 17:30:38,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:30:38,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:38,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:30:38,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:38,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:30:38,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:38,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 2968 transitions, 21840 flow [2023-10-12 17:30:38,308 INFO L124 PetriNetUnfolderBase]: 1514/2050 cut-off events. [2023-10-12 17:30:38,308 INFO L125 PetriNetUnfolderBase]: For 476/476 co-relation queries the response was YES. [2023-10-12 17:30:38,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6696 conditions, 2050 events. 1514/2050 cut-off events. For 476/476 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7828 event pairs, 121 based on Foata normal form. 0/1173 useless extension candidates. Maximal degree in co-relation 4630. Up to 719 conditions per place. [2023-10-12 17:30:38,312 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 50 places, 2968 transitions, 21840 flow [2023-10-12 17:30:38,339 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 50 places, 2968 transitions, 21840 flow [2023-10-12 17:30:38,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:30:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:30:38,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:30:38,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 2968 transitions, 21840 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 17:30:38,343 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:30:38,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:30:38,843 INFO L124 PetriNetUnfolderBase]: 2041/2840 cut-off events. [2023-10-12 17:30:38,843 INFO L125 PetriNetUnfolderBase]: For 652/652 co-relation queries the response was YES. [2023-10-12 17:30:38,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12149 conditions, 2840 events. 2041/2840 cut-off events. For 652/652 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 11689 event pairs, 142 based on Foata normal form. 0/1737 useless extension candidates. Maximal degree in co-relation 8272. Up to 2057 conditions per place. [2023-10-12 17:30:38,863 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 249 selfloop transitions, 4 changer transitions 100/353 dead transitions. [2023-10-12 17:30:38,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:38,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:39,043 INFO L124 PetriNetUnfolderBase]: 2041/2840 cut-off events. [2023-10-12 17:30:39,043 INFO L125 PetriNetUnfolderBase]: For 652/652 co-relation queries the response was YES. [2023-10-12 17:30:39,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12149 conditions, 2840 events. 2041/2840 cut-off events. For 652/652 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 11691 event pairs, 142 based on Foata normal form. 0/1737 useless extension candidates. Maximal degree in co-relation 8272. Up to 2057 conditions per place. [2023-10-12 17:30:39,048 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:39,051 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:39,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:30:39,053 INFO L430 stractBuchiCegarLoop]: Abstraction has has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:39,053 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:30:39,053 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:39,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:39,071 INFO L124 PetriNetUnfolderBase]: 145/228 cut-off events. [2023-10-12 17:30:39,071 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-10-12 17:30:39,071 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:39,072 INFO L748 eck$LassoCheckResult]: Stem: 53#[$Ultimate##0]true [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]true [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L77-1, L24-1]true [133] L24-1-->thread1EXIT: Formula: (<= v_N1_6 v_i1_10) InVars {i1=v_i1_10, N1=v_N1_6} OutVars{i1=v_i1_10, N1=v_N1_6} AuxVars[] AssignedVars[] 153#[L77-1, thread1EXIT]true [117] L77-1-->L35-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 155#[L78, L35-1, thread1EXIT]true [120] L78-->L47-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 157#[L47-1, L79, L35-1, thread1EXIT]true [2023-10-12 17:30:39,072 INFO L750 eck$LassoCheckResult]: Loop: 157#[L47-1, L79, L35-1, thread1EXIT]true [137] L47-1-->L47-1: Formula: (and (= (+ v_counter2_25 1) v_counter2_24) (< v_j1_15 v_M1_8) (= v_j1_14 (+ v_j1_15 1))) InVars {counter2=v_counter2_25, j1=v_j1_15, M1=v_M1_8} OutVars{counter2=v_counter2_24, j1=v_j1_14, M1=v_M1_8} AuxVars[] AssignedVars[counter2, j1] 157#[L47-1, L79, L35-1, thread1EXIT]true [137] L47-1-->L47-1: Formula: (and (= (+ v_counter2_25 1) v_counter2_24) (< v_j1_15 v_M1_8) (= v_j1_14 (+ v_j1_15 1))) InVars {counter2=v_counter2_25, j1=v_j1_15, M1=v_M1_8} OutVars{counter2=v_counter2_24, j1=v_j1_14, M1=v_M1_8} AuxVars[] AssignedVars[counter2, j1] 157#[L47-1, L79, L35-1, thread1EXIT]true [2023-10-12 17:30:39,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash 166067430, now seen corresponding path program 1 times [2023-10-12 17:30:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981558079] [2023-10-12 17:30:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:39,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:39,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:39,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:39,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:39,098 INFO L85 PathProgramCache]: Analyzing trace with hash 5345, now seen corresponding path program 1 times [2023-10-12 17:30:39,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:39,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291882913] [2023-10-12 17:30:39,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:39,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:39,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:39,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:39,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:39,105 INFO L85 PathProgramCache]: Analyzing trace with hash 677014662, now seen corresponding path program 1 times [2023-10-12 17:30:39,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:39,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694474611] [2023-10-12 17:30:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:39,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:39,150 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 17:30:39,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694474611] [2023-10-12 17:30:39,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694474611] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:30:39,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:30:39,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-10-12 17:30:39,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679822838] [2023-10-12 17:30:39,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:30:39,176 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:39,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:39,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:39,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:39,177 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:39,177 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:39,177 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:39,177 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:39,177 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:30:39,177 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:39,177 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:39,178 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 17:30:39,181 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 17:30:39,201 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:39,202 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:39,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:39,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:39,218 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 17:30:39,220 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 17:30:39,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:39,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:39,277 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 17:30:39,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:39,278 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 17:30:39,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:39,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:39,304 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 17:30:39,322 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:30:39,322 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {counter2=0} Honda state: {counter2=0} Generalized eigenvectors: [{counter2=-2}, {counter2=-3}, {counter2=7}] Lambdas: [1, 1, 1] Nus: [0, 0] [2023-10-12 17:30:39,328 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 17:30:39,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:39,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:39,330 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 17:30:39,332 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 17:30:39,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:39,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:39,360 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 17:30:39,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:39,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:39,364 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 17:30:39,366 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 17:30:39,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:39,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:39,470 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:39,473 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 17:30:39,474 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:39,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:39,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:39,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:39,474 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:39,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:39,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:39,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:39,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:30:39,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:39,474 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:39,475 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 17:30:39,479 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 17:30:39,499 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:39,499 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:39,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:39,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:39,513 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 17:30:39,515 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 17:30:39,530 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 17:30:39,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:39,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:39,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:39,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:39,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:39,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:39,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:39,546 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:30:39,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:39,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:39,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:39,552 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 17:30:39,553 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 17:30:39,555 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 17:30:39,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:39,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:39,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:39,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:39,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:39,564 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:39,564 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:39,579 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:39,582 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:30:39,582 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:30:39,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:39,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:39,583 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 17:30:39,585 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 17:30:39,586 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:39,586 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:39,586 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:39,586 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j1, M1) = -1*j1 + 1*M1 Supporting invariants [] [2023-10-12 17:30:39,589 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 17:30:39,590 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:39,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:39,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:39,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:39,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:39,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:39,628 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 17:30:39,629 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 17:30:39,629 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.3333333333333335) 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 17:30:39,750 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.3333333333333335) 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) Result 7 states and 483 transitions. [2023-10-12 17:30:39,750 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:39,777 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:39,777 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 17:30:39,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) 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 17:30:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2023-10-12 17:30:39,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 310 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:30:39,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:39,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 310 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:30:39,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:39,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 310 transitions. Stem has 5 letters. Loop has 4 letters. [2023-10-12 17:30:39,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:39,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 5486 transitions, 61628 flow [2023-10-12 17:30:39,981 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 17:30:41,598 INFO L124 PetriNetUnfolderBase]: 5980/8030 cut-off events. [2023-10-12 17:30:41,598 INFO L125 PetriNetUnfolderBase]: For 1904/1904 co-relation queries the response was YES. [2023-10-12 17:30:41,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42205 conditions, 8030 events. 5980/8030 cut-off events. For 1904/1904 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 36560 event pairs, 122 based on Foata normal form. 0/4611 useless extension candidates. Maximal degree in co-relation 27810. Up to 5679 conditions per place. [2023-10-12 17:30:41,608 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 60 places, 5486 transitions, 61628 flow [2023-10-12 17:30:41,686 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 60 places, 5486 transitions, 61628 flow [2023-10-12 17:30:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:30:41,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:30:41,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:30:41,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 5486 transitions, 61628 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 17:30:41,687 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:30:41,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:30:43,904 INFO L124 PetriNetUnfolderBase]: 5738/7838 cut-off events. [2023-10-12 17:30:43,905 INFO L125 PetriNetUnfolderBase]: For 1934/1934 co-relation queries the response was YES. [2023-10-12 17:30:43,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49087 conditions, 7838 events. 5738/7838 cut-off events. For 1934/1934 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 37101 event pairs, 169 based on Foata normal form. 0/4641 useless extension candidates. Maximal degree in co-relation 33402. Up to 6087 conditions per place. [2023-10-12 17:30:43,973 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 892 selfloop transitions, 73 changer transitions 671/1636 dead transitions. [2023-10-12 17:30:43,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 1636 transitions, 21234 flow [2023-10-12 17:30:43,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 1636 transitions, 21234 flow [2023-10-12 17:30:44,671 INFO L124 PetriNetUnfolderBase]: 5738/7838 cut-off events. [2023-10-12 17:30:44,671 INFO L125 PetriNetUnfolderBase]: For 1934/1934 co-relation queries the response was YES. [2023-10-12 17:30:44,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49087 conditions, 7838 events. 5738/7838 cut-off events. For 1934/1934 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 37010 event pairs, 169 based on Foata normal form. 0/4641 useless extension candidates. Maximal degree in co-relation 33402. Up to 6087 conditions per place. [2023-10-12 17:30:44,678 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 58 places, 1636 transitions, 21234 flow [2023-10-12 17:30:44,696 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 58 places, 1636 transitions, 21234 flow [2023-10-12 17:30:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-10-12 17:30:44,698 INFO L430 stractBuchiCegarLoop]: Abstraction has has 58 places, 1636 transitions, 21234 flow [2023-10-12 17:30:44,698 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:30:44,698 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 58 places, 1636 transitions, 21234 flow [2023-10-12 17:30:44,784 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:44,784 INFO L124 PetriNetUnfolderBase]: 579/816 cut-off events. [2023-10-12 17:30:44,784 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2023-10-12 17:30:44,785 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:44,785 INFO L748 eck$LassoCheckResult]: Stem: 53#[$Ultimate##0]true [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]true [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L77-1, L24-1]true [117] L77-1-->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] 102#[L78, L24-1, L35-1]true [134] L24-1-->L24-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_27 1) v_counter1_26) (< v_i1_13 v_N1_8)) InVars {counter1=v_counter1_27, i1=v_i1_13, N1=v_N1_8} OutVars{counter1=v_counter1_26, i1=v_i1_12, N1=v_N1_8} AuxVars[] AssignedVars[counter1, i1] 102#[L78, L24-1, L35-1]true [132] L35-1-->L35-1: Formula: (and (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23) (< v_i2_17 v_N2_6)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_6} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_6} AuxVars[] AssignedVars[counter1, i2] 102#[L78, L24-1, L35-1]true [133] L24-1-->thread1EXIT: Formula: (<= v_N1_6 v_i1_10) InVars {i1=v_i1_10, N1=v_N1_6} OutVars{i1=v_i1_10, N1=v_N1_6} AuxVars[] AssignedVars[] 155#[L78, L35-1, thread1EXIT]true [132] L35-1-->L35-1: Formula: (and (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23) (< v_i2_17 v_N2_6)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_6} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_6} AuxVars[] AssignedVars[counter1, i2] 155#[L78, L35-1, thread1EXIT]true [2023-10-12 17:30:44,785 INFO L750 eck$LassoCheckResult]: Loop: 155#[L78, L35-1, thread1EXIT]true [132] L35-1-->L35-1: Formula: (and (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23) (< v_i2_17 v_N2_6)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_6} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_6} AuxVars[] AssignedVars[counter1, i2] 155#[L78, L35-1, thread1EXIT]true [132] L35-1-->L35-1: Formula: (and (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23) (< v_i2_17 v_N2_6)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_6} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_6} AuxVars[] AssignedVars[counter1, i2] 155#[L78, L35-1, thread1EXIT]true [2023-10-12 17:30:44,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash 662756176, now seen corresponding path program 1 times [2023-10-12 17:30:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853700206] [2023-10-12 17:30:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:44,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-10-12 17:30:44,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:44,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853700206] [2023-10-12 17:30:44,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853700206] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:30:44,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:30:44,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:30:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259743457] [2023-10-12 17:30:44,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:30:44,816 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-10-12 17:30:44,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash 5185, now seen corresponding path program 2 times [2023-10-12 17:30:44,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:44,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612417353] [2023-10-12 17:30:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:44,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,820 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:44,851 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:44,851 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:44,851 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:44,851 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:44,851 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:44,851 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,852 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:44,852 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:44,852 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:30:44,852 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:44,852 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:44,852 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 17:30:44,856 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 17:30:44,875 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:44,876 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:44,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,877 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 17:30:44,879 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 17:30:44,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:44,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:44,938 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 17:30:44,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,939 INFO L229 MonitoredProcess]: Starting monitored process 18 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 17:30:44,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-10-12 17:30:44,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:44,943 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:45,037 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:45,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:45,041 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:45,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:45,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:45,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:45,041 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:45,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:45,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:45,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:45,041 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:30:45,041 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:45,041 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:45,042 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 17:30:45,049 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 17:30:45,072 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:45,072 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:45,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:45,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:45,073 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 17:30:45,075 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 17:30:45,077 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 17:30:45,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:45,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:45,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:45,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:45,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:45,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:45,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:45,094 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:45,096 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:30:45,096 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:30:45,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:45,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:45,097 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 17:30:45,102 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 17:30:45,103 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:45,103 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:45,103 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:45,103 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N2, i2) = 1*N2 - 1*i2 Supporting invariants [] [2023-10-12 17:30:45,106 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 17:30:45,107 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:45,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:45,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:45,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:45,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:45,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:45,154 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 17:30:45,155 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 17:30:45,155 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 17:30:45,285 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 483 transitions. [2023-10-12 17:30:45,285 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:45,441 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:45,442 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 17:30:45,442 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 17:30:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2023-10-12 17:30:45,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 310 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:30:45,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:45,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 310 transitions. Stem has 9 letters. Loop has 2 letters. [2023-10-12 17:30:45,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:45,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 310 transitions. Stem has 7 letters. Loop has 4 letters. [2023-10-12 17:30:45,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:45,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 25672 transitions, 385040 flow [2023-10-12 17:30:47,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-10-12 17:31:36,331 INFO L124 PetriNetUnfolderBase]: 15906/21274 cut-off events. [2023-10-12 17:31:36,331 INFO L125 PetriNetUnfolderBase]: For 5057/5057 co-relation queries the response was YES. [2023-10-12 17:31:36,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154299 conditions, 21274 events. 15906/21274 cut-off events. For 5057/5057 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 110450 event pairs, 179 based on Foata normal form. 0/11823 useless extension candidates. Maximal degree in co-relation 102886. Up to 19523 conditions per place. [2023-10-12 17:31:36,363 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 72 places, 25672 transitions, 385040 flow [2023-10-12 17:31:36,731 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 72 places, 25672 transitions, 385040 flow [2023-10-12 17:31:36,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:31:36,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:31:36,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:31:36,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 25672 transitions, 385040 flow. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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 17:31:36,732 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:31:36,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:33:56,502 INFO L124 PetriNetUnfolderBase]: 31951/43038 cut-off events. [2023-10-12 17:33:56,502 INFO L125 PetriNetUnfolderBase]: For 9767/9767 co-relation queries the response was YES. [2023-10-12 17:33:56,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355199 conditions, 43038 events. 31951/43038 cut-off events. For 9767/9767 co-relation queries the response was YES. Maximal size of possible extension queue 2099. Compared 247666 event pairs, 279 based on Foata normal form. 0/24205 useless extension candidates. Maximal degree in co-relation 232202. Up to 41287 conditions per place. [2023-10-12 17:33:56,778 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 3994 selfloop transitions, 188 changer transitions 4557/8739 dead transitions. [2023-10-12 17:33:56,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 8739 transitions, 148959 flow [2023-10-12 17:33:56,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 8739 transitions, 148959 flow [2023-10-12 17:34:17,213 INFO L124 PetriNetUnfolderBase]: 31951/43038 cut-off events. [2023-10-12 17:34:17,213 INFO L125 PetriNetUnfolderBase]: For 9767/9767 co-relation queries the response was YES. [2023-10-12 17:34:17,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355199 conditions, 43038 events. 31951/43038 cut-off events. For 9767/9767 co-relation queries the response was YES. Maximal size of possible extension queue 2099. Compared 247711 event pairs, 279 based on Foata normal form. 0/24205 useless extension candidates. Maximal degree in co-relation 232202. Up to 41287 conditions per place. [2023-10-12 17:34:17,284 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 69 places, 8739 transitions, 148959 flow [2023-10-12 17:34:17,380 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 69 places, 8739 transitions, 148959 flow [2023-10-12 17:34:17,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-10-12 17:34:17,381 INFO L430 stractBuchiCegarLoop]: Abstraction has has 69 places, 8739 transitions, 148959 flow [2023-10-12 17:34:17,381 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:34:17,381 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 69 places, 8739 transitions, 148959 flow [2023-10-12 17:34:19,133 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:34:19,133 INFO L124 PetriNetUnfolderBase]: 2421/3273 cut-off events. [2023-10-12 17:34:19,133 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2023-10-12 17:34:19,133 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:34:19,134 INFO L748 eck$LassoCheckResult]: Stem: 53#[$Ultimate##0]true [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]true [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L77-1, L24-1]true [117] L77-1-->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] 102#[L78, L24-1, L35-1]true [120] L78-->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] 289#[L47-1, L79, L24-1, L35-1]true [134] L24-1-->L24-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_27 1) v_counter1_26) (< v_i1_13 v_N1_8)) InVars {counter1=v_counter1_27, i1=v_i1_13, N1=v_N1_8} OutVars{counter1=v_counter1_26, i1=v_i1_12, N1=v_N1_8} AuxVars[] AssignedVars[counter1, i1] 289#[L47-1, L79, L24-1, L35-1]true [123] L79-->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] 292#[L58-1, L47-1, L24-1, L35-1, L80]true [2023-10-12 17:34:19,134 INFO L750 eck$LassoCheckResult]: Loop: 292#[L58-1, L47-1, L24-1, L35-1, L80]true [139] L58-1-->L58-1: Formula: (and (= v_j2_16 (+ v_j2_17 1)) (= (+ v_counter2_28 1) v_counter2_29) (< 0 v_counter2_29) (< v_j2_17 v_M2_6)) InVars {counter2=v_counter2_29, j2=v_j2_17, M2=v_M2_6} OutVars{counter2=v_counter2_28, j2=v_j2_16, M2=v_M2_6} AuxVars[] AssignedVars[counter2, j2] 292#[L58-1, L47-1, L24-1, L35-1, L80]true [139] L58-1-->L58-1: Formula: (and (= v_j2_16 (+ v_j2_17 1)) (= (+ v_counter2_28 1) v_counter2_29) (< 0 v_counter2_29) (< v_j2_17 v_M2_6)) InVars {counter2=v_counter2_29, j2=v_j2_17, M2=v_M2_6} OutVars{counter2=v_counter2_28, j2=v_j2_16, M2=v_M2_6} AuxVars[] AssignedVars[counter2, j2] 292#[L58-1, L47-1, L24-1, L35-1, L80]true [2023-10-12 17:34:19,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:34:19,134 INFO L85 PathProgramCache]: Analyzing trace with hash 852649818, now seen corresponding path program 1 times [2023-10-12 17:34:19,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:34:19,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221801307] [2023-10-12 17:34:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:34:19,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:34:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:34:19,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:34:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:34:19,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:34:19,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:34:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash 5409, now seen corresponding path program 1 times [2023-10-12 17:34:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:34:19,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508741296] [2023-10-12 17:34:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:34:19,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:34:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:34:19,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:34:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:34:19,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:34:19,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:34:19,152 INFO L85 PathProgramCache]: Analyzing trace with hash -942273990, now seen corresponding path program 1 times [2023-10-12 17:34:19,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:34:19,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077963527] [2023-10-12 17:34:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:34:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:34:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:34:19,171 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 17:34:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:34:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077963527] [2023-10-12 17:34:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077963527] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:34:19,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:34:19,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:34:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724647461] [2023-10-12 17:34:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:34:19,203 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:34:19,203 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:34:19,203 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:34:19,203 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:34:19,203 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:34:19,203 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:34:19,203 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:34:19,203 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:34:19,203 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:34:19,203 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:34:19,203 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:34:19,204 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 17:34:19,207 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 17:34:19,228 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:34:19,228 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:34:19,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:34:19,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:34:19,230 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 17:34:19,232 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 17:34:19,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:34:19,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:34:19,263 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 17:34:19,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:34:19,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:34:19,265 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 17:34:19,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:34:19,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:34:19,297 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 17:34:19,339 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:34:19,345 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 17:34:19,345 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:34:19,345 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:34:19,345 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:34:19,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:34:19,345 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:34:19,345 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:34:19,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:34:19,345 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:34:19,346 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:34:19,346 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:34:19,346 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:34:19,346 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 17:34:19,350 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 17:34:19,371 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:34:19,371 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:34:19,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:34:19,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:34:19,374 INFO L229 MonitoredProcess]: Starting monitored process 23 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 17:34:19,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-10-12 17:34:19,378 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 17:34:19,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:34:19,384 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:34:19,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:34:19,384 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:34:19,384 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:34:19,385 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:34:19,385 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:34:19,386 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:34:19,387 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-10-12 17:34:19,387 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:34:19,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:34:19,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:34:19,388 INFO L229 MonitoredProcess]: Starting monitored process 24 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 17:34:19,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-10-12 17:34:19,391 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:34:19,391 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:34:19,391 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:34:19,391 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter2) = 1*counter2 Supporting invariants [] [2023-10-12 17:34:19,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-10-12 17:34:19,398 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:34:19,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:34:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:34:19,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:34:19,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:34:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:34:19,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:34:19,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:34:19,444 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 17:34:19,444 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 17:34:19,444 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:34:19,520 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 6 states and 420 transitions. [2023-10-12 17:34:19,520 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:34:20,394 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:34:20,395 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 17:34:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:34:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-10-12 17:34:20,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 6 letters. Loop has 2 letters. [2023-10-12 17:34:20,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:34:20,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 8 letters. Loop has 2 letters. [2023-10-12 17:34:20,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:34:20,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 6 letters. Loop has 4 letters. [2023-10-12 17:34:20,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:34:20,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 117506 transitions, 2242998 flow [2023-10-12 17:34:22,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 Received shutdown request... [2023-10-12 17:35:08,153 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 17:35:08,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:35:08,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:35:08,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:35:08,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 117506 transitions, 2242998 flow. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:35:08,154 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:35:08,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:35:08,170 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 17:35:08,243 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: clock still running: AutomataDifference at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopStatisticsGenerator.getValue(CegarLoopStatisticsGenerator.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmarkGenerator.getValue(BuchiCegarLoopBenchmarkGenerator.java:131) at de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData.aggregateBenchmarkData(StatisticsData.java:60) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerTimingBenchmark.(BuchiAutomizerTimingBenchmark.java:39) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:341) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-10-12 17:35:08,245 INFO L158 Benchmark]: Toolchain (without parser) took 272466.49ms. Allocated memory was 213.9MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 168.4MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 881.7MB. Max. memory is 8.0GB. [2023-10-12 17:35:08,245 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.20ms. Allocated memory is still 213.9MB. Free memory is still 169.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:35:08,245 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.95ms. Allocated memory is still 213.9MB. Free memory was 168.4MB in the beginning and 166.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:35:08,246 INFO L158 Benchmark]: Boogie Preprocessor took 18.34ms. Allocated memory is still 213.9MB. Free memory was 166.9MB in the beginning and 165.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:35:08,247 INFO L158 Benchmark]: RCFGBuilder took 215.24ms. Allocated memory is still 213.9MB. Free memory was 165.7MB in the beginning and 155.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:35:08,247 INFO L158 Benchmark]: BuchiAutomizer took 272205.40ms. Allocated memory was 213.9MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 154.7MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 868.0MB. Max. memory is 8.0GB. [2023-10-12 17:35:08,251 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20ms. Allocated memory is still 213.9MB. Free memory is still 169.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.95ms. Allocated memory is still 213.9MB. Free memory was 168.4MB in the beginning and 166.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.34ms. Allocated memory is still 213.9MB. Free memory was 166.9MB in the beginning and 165.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 215.24ms. Allocated memory is still 213.9MB. Free memory was 165.7MB in the beginning and 155.0MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 272205.40ms. Allocated memory was 213.9MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 154.7MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 868.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Decomposition not yet finished * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 45 PlacesBefore, 28 PlacesAfterwards, 36 TransitionsBefore, 19 TransitionsAfterwards, 288 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 18 TotalNumberOfCompositions, 279 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 279, independent: 279, independent conditional: 0, independent unconditional: 279, 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: 279, independent: 117, independent conditional: 0, independent unconditional: 117, 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 - ExceptionOrErrorResult: AssertionError: clock still running: AutomataDifference de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: clock still running: AutomataDifference: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopStatisticsGenerator.getValue(CegarLoopStatisticsGenerator.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown