/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/counter-determinism.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:30:34,449 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:30:34,500 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 17:30:34,535 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:30:34,536 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:30:34,536 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:30:34,538 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:30:34,538 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:30:34,538 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:30:34,542 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:30:34,542 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:30:34,542 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:30:34,542 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:30:34,544 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:30:34,544 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:30:34,544 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:30:34,544 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:30:34,544 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:30:34,545 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:30:34,545 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:30:34,545 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:30:34,546 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:30:34,546 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:30:34,547 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:30:34,547 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:30:34,547 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:30:34,547 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:30:34,547 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:30:34,548 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:30:34,548 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:30:34,549 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:30:34,549 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:30:34,549 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:30:34,550 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:30:34,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:30:34,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:30:34,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:30:34,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:30:34,760 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:30:34,760 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:30:34,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-determinism.wvr.bpl [2023-10-12 17:30:34,761 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-determinism.wvr.bpl' [2023-10-12 17:30:34,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:30:34,796 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:30:34,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:30:34,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:30:34,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:30:34,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,819 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:30:34,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:30:34,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:30:34,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:30:34,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:30:34,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:30:34,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:30:34,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:30:34,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:30:34,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/1) ... [2023-10-12 17:30:34,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:34,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:34,879 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 17:30:34,911 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 17:30:34,924 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:30:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:30:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:30:34,925 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:30:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:30:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:30:34,925 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:30:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:30:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:30:34,926 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:30:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:30:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:30:34,927 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2023-10-12 17:30:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-10-12 17:30:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-10-12 17:30:34,928 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 17:30:34,978 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:30:34,980 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:30:35,107 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:30:35,135 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:30:35,136 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:30:35,138 INFO L201 PluginConnector]: Adding new model counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:30:35 BoogieIcfgContainer [2023-10-12 17:30:35,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:30:35,139 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:30:35,139 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:30:35,142 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:30:35,143 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:30:35,143 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:34" (1/2) ... [2023-10-12 17:30:35,144 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3592da57 and model type counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:30:35, skipping insertion in model container [2023-10-12 17:30:35,144 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:30:35,144 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:30:35" (2/2) ... [2023-10-12 17:30:35,145 INFO L332 chiAutomizerObserver]: Analyzing ICFG counter-determinism.wvr.bpl [2023-10-12 17:30:35,207 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-10-12 17:30:35,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 118 flow [2023-10-12 17:30:35,256 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-10-12 17:30:35,256 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:30:35,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 35 events. 4/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-10-12 17:30:35,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 43 transitions, 118 flow [2023-10-12 17:30:35,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2023-10-12 17:30:35,267 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:30:35,288 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 35 transitions, 94 flow [2023-10-12 17:30:35,290 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 35 transitions, 94 flow [2023-10-12 17:30:35,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 94 flow [2023-10-12 17:30:35,299 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-10-12 17:30:35,299 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:30:35,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 35 events. 4/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-10-12 17:30:35,300 INFO L119 LiptonReduction]: Number of co-enabled transitions 288 [2023-10-12 17:30:35,609 INFO L134 LiptonReduction]: Checked pairs total: 258 [2023-10-12 17:30:35,609 INFO L136 LiptonReduction]: Total number of compositions: 17 [2023-10-12 17:30:35,620 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:30:35,620 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:30:35,620 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:30:35,621 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:30:35,621 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:30:35,621 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:30:35,621 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:30:35,621 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:30:35,622 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:30:35,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:35,626 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:30:35,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:30:35,626 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:35,629 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:30:35,629 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:30:35,631 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:35,631 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:30:35,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:30:35,631 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:35,642 INFO L748 eck$LassoCheckResult]: Stem: 52#[$Ultimate##0]true [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 54#[L74]true [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 56#[L22-1, L74-1]true [2023-10-12 17:30:35,644 INFO L750 eck$LassoCheckResult]: Loop: 56#[L22-1, L74-1]true [137] L22-1-->L22-1: Formula: (and (< v_i1_13 v_N1_12) (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_31 1) v_counter1_30)) InVars {counter1=v_counter1_31, i1=v_i1_13, N1=v_N1_12} OutVars{counter1=v_counter1_30, i1=v_i1_12, N1=v_N1_12} AuxVars[] AssignedVars[counter1, i1] 56#[L22-1, L74-1]true [2023-10-12 17:30:35,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:35,649 INFO L85 PathProgramCache]: Analyzing trace with hash 5475, now seen corresponding path program 1 times [2023-10-12 17:30:35,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:35,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129642152] [2023-10-12 17:30:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:35,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:35,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:35,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:35,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:35,778 INFO L85 PathProgramCache]: Analyzing trace with hash 168, now seen corresponding path program 1 times [2023-10-12 17:30:35,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:35,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779644031] [2023-10-12 17:30:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:35,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:35,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:35,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:35,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash 169862, now seen corresponding path program 1 times [2023-10-12 17:30:35,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:35,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514829185] [2023-10-12 17:30:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:35,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:35,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:35,896 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:35,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:35,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:35,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:35,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:35,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:35,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:35,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:35,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:30:35,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:35,898 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:35,917 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 17:30:35,932 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 17:30:35,979 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:35,979 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:35,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:35,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:35,986 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 17:30:35,988 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 17:30:35,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:35,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:36,018 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 17:30:36,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:36,023 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 17:30:36,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:36,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:36,065 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 17:30:36,164 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:36,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:36,169 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:36,169 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:36,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:36,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:36,169 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:36,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:36,169 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:36,169 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:30:36,169 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:36,170 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:36,171 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 17:30:36,192 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 17:30:36,224 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:36,228 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:36,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:36,230 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 17:30:36,242 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 17:30:36,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:36,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:36,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:36,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:36,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:36,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:36,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:36,260 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 17:30:36,268 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:36,274 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:30:36,274 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:30:36,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:36,283 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 17:30:36,333 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 17:30:36,334 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:36,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:36,335 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:36,335 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N1) = -1*i1 + 1*N1 Supporting invariants [] [2023-10-12 17:30:36,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-10-12 17:30:36,340 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:36,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:36,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:36,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:36,397 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:30:36,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:36,398 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 17:30:36,424 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 17:30:36,426 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 17:30:36,581 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 352 transitions. [2023-10-12 17:30:36,582 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:36,588 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:36,591 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 17:30:36,598 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 17:30:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2023-10-12 17:30:36,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 240 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:30:36,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:36,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 240 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:30:36,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:36,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 240 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:30:36,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:36,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:36,676 INFO L124 PetriNetUnfolderBase]: 431/583 cut-off events. [2023-10-12 17:30:36,676 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-10-12 17:30:36,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 583 events. 431/583 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1642 event pairs, 66 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 17:30:36,678 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:36,682 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:36,683 INFO L430 stractBuchiCegarLoop]: Abstraction has has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:36,683 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:30:36,683 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38 places, 220 transitions, 1168 flow [2023-10-12 17:30:36,689 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:36,689 INFO L124 PetriNetUnfolderBase]: 25/39 cut-off events. [2023-10-12 17:30:36,689 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-10-12 17:30:36,689 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:36,690 INFO L748 eck$LassoCheckResult]: Stem: 52#[$Ultimate##0]true [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 54#[L74]true [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 56#[L22-1, L74-1]true [115] L74-1-->L33-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 101#[L22-1, L75, L33-1]true [2023-10-12 17:30:36,690 INFO L750 eck$LassoCheckResult]: Loop: 101#[L22-1, L75, L33-1]true [131] L33-1-->L33-1: Formula: (and (< v_i2_17 v_N2_12) (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_12} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_12} AuxVars[] AssignedVars[counter1, i2] 101#[L22-1, L75, L33-1]true [131] L33-1-->L33-1: Formula: (and (< v_i2_17 v_N2_12) (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_12} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_12} AuxVars[] AssignedVars[counter1, i2] 101#[L22-1, L75, L33-1]true [2023-10-12 17:30:36,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:36,690 INFO L85 PathProgramCache]: Analyzing trace with hash 169840, now seen corresponding path program 1 times [2023-10-12 17:30:36,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:36,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608759163] [2023-10-12 17:30:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:36,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:36,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash 5153, now seen corresponding path program 1 times [2023-10-12 17:30:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:36,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688130357] [2023-10-12 17:30:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:36,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:36,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:36,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:36,714 INFO L85 PathProgramCache]: Analyzing trace with hash 163220432, now seen corresponding path program 1 times [2023-10-12 17:30:36,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:36,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453768937] [2023-10-12 17:30:36,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:36,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:36,765 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 17:30:36,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:36,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453768937] [2023-10-12 17:30:36,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453768937] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:30:36,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:30:36,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:30:36,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920878067] [2023-10-12 17:30:36,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:30:36,826 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:36,826 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:36,826 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:36,826 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:36,826 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:36,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:36,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:36,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:30:36,827 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:36,827 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:36,828 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:30:36,833 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 17:30:36,864 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:36,865 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:36,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:36,866 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 17:30:36,870 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 17:30:36,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:36,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:36,888 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 17:30:36,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:36,890 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 17:30:36,891 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 17:30:36,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:36,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:36,944 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:36,949 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 17:30:36,950 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:36,950 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:36,950 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:36,950 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:36,950 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:36,950 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,950 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:36,950 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:36,950 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:30:36,950 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:36,951 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:36,952 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 17:30:36,957 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 17:30:36,987 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:36,987 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:36,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:36,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:36,989 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 17:30:37,000 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 17:30:37,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:37,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:37,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:37,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:37,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:37,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:37,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:37,012 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 17:30:37,033 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:37,035 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-10-12 17:30:37,035 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:30:37,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:37,038 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 17:30:37,040 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 17:30:37,041 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:37,041 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:37,041 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:37,041 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter1) = 1*counter1 Supporting invariants [] [2023-10-12 17:30:37,048 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 17:30:37,049 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:37,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:37,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:37,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:37,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:37,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:37,097 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 17:30:37,098 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 17:30:37,098 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 17:30:37,207 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 406 transitions. [2023-10-12 17:30:37,207 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:37,246 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 17:30:37,253 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 17:30:37,254 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:37,254 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 17:30:37,255 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 17:30:37,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2023-10-12 17:30:37,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:30:37,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:37,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:30:37,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:37,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:30:37,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:37,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 2968 transitions, 21840 flow [2023-10-12 17:30:37,528 INFO L124 PetriNetUnfolderBase]: 1514/2050 cut-off events. [2023-10-12 17:30:37,528 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2023-10-12 17:30:37,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6696 conditions, 2050 events. 1514/2050 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7752 event pairs, 162 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 17:30:37,535 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 50 places, 2968 transitions, 21840 flow [2023-10-12 17:30:37,574 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 50 places, 2968 transitions, 21840 flow [2023-10-12 17:30:37,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:30:37,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:30:37,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:30:37,579 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 17:30:37,579 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:30:37,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:30:38,095 INFO L124 PetriNetUnfolderBase]: 2041/2840 cut-off events. [2023-10-12 17:30:38,096 INFO L125 PetriNetUnfolderBase]: For 677/677 co-relation queries the response was YES. [2023-10-12 17:30:38,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12149 conditions, 2840 events. 2041/2840 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11657 event pairs, 194 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 17:30:38,114 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 249 selfloop transitions, 4 changer transitions 100/353 dead transitions. [2023-10-12 17:30:38,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:38,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:38,288 INFO L124 PetriNetUnfolderBase]: 2041/2840 cut-off events. [2023-10-12 17:30:38,289 INFO L125 PetriNetUnfolderBase]: For 677/677 co-relation queries the response was YES. [2023-10-12 17:30:38,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12149 conditions, 2840 events. 2041/2840 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11652 event pairs, 194 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 17:30:38,294 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:38,299 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:30:38,301 INFO L430 stractBuchiCegarLoop]: Abstraction has has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:38,301 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:30:38,301 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 46 places, 353 transitions, 3247 flow [2023-10-12 17:30:38,334 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:38,334 INFO L124 PetriNetUnfolderBase]: 229/343 cut-off events. [2023-10-12 17:30:38,334 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-10-12 17:30:38,334 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:38,335 INFO L748 eck$LassoCheckResult]: Stem: 52#[$Ultimate##0]true [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 54#[L74]true [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 56#[L22-1, L74-1]true [136] L22-1-->thread1EXIT: Formula: (<= v_N1_10 v_i1_10) InVars {i1=v_i1_10, N1=v_N1_10} OutVars{i1=v_i1_10, N1=v_N1_10} AuxVars[] AssignedVars[] 152#[L74-1, thread1EXIT]true [115] L74-1-->L33-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 154#[L75, L33-1, thread1EXIT]true [118] L75-->L45-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 156#[L45-1, L33-1, thread1EXIT, L76]true [2023-10-12 17:30:38,336 INFO L750 eck$LassoCheckResult]: Loop: 156#[L45-1, L33-1, thread1EXIT, L76]true [133] L45-1-->L45-1: Formula: (and (= (+ v_counter2_27 1) v_counter2_26) (= v_j1_14 (+ v_j1_15 1)) (< v_j1_15 v_N1_8)) InVars {counter2=v_counter2_27, j1=v_j1_15, N1=v_N1_8} OutVars{counter2=v_counter2_26, j1=v_j1_14, N1=v_N1_8} AuxVars[] AssignedVars[counter2, j1] 156#[L45-1, L33-1, thread1EXIT, L76]true [133] L45-1-->L45-1: Formula: (and (= (+ v_counter2_27 1) v_counter2_26) (= v_j1_14 (+ v_j1_15 1)) (< v_j1_15 v_N1_8)) InVars {counter2=v_counter2_27, j1=v_j1_15, N1=v_N1_8} OutVars{counter2=v_counter2_26, j1=v_j1_14, N1=v_N1_8} AuxVars[] AssignedVars[counter2, j1] 156#[L45-1, L33-1, thread1EXIT, L76]true [2023-10-12 17:30:38,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 163240104, now seen corresponding path program 1 times [2023-10-12 17:30:38,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:38,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745848104] [2023-10-12 17:30:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:38,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:38,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:38,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:38,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash 5217, now seen corresponding path program 1 times [2023-10-12 17:30:38,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:38,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347107727] [2023-10-12 17:30:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:38,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:38,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:38,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:38,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2040045752, now seen corresponding path program 1 times [2023-10-12 17:30:38,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:38,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710916327] [2023-10-12 17:30:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:38,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:38,408 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 17:30:38,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:38,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710916327] [2023-10-12 17:30:38,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710916327] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:30:38,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:30:38,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-10-12 17:30:38,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889956741] [2023-10-12 17:30:38,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:30:38,450 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:38,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:38,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:38,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:38,450 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:38,451 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:38,451 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:38,451 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:38,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:30:38,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:38,451 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:38,452 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 17:30:38,457 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 17:30:38,485 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:38,485 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:38,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:38,486 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 17:30:38,499 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 17:30:38,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:38,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:38,531 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 17:30:38,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:38,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:38,533 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 17:30:38,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:38,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:38,567 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 17:30:38,645 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:38,650 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 17:30:38,651 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:38,651 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:38,651 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:38,651 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:38,651 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:38,651 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:38,651 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:38,651 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:38,651 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:30:38,651 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:38,651 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:38,652 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 17:30:38,661 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 17:30:38,683 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:38,684 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:38,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:38,698 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 17:30:38,700 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 17:30:38,702 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 17:30:38,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:38,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:38,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:38,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:38,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:38,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:38,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:38,729 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:38,731 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:30:38,731 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:30:38,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:38,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:38,733 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 17:30:38,736 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 17:30:38,737 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:38,737 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:38,737 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:38,737 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j1, N1) = -1*j1 + 1*N1 Supporting invariants [] [2023-10-12 17:30:38,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-10-12 17:30:38,742 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:38,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:38,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:38,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:38,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:38,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:38,783 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 17:30:38,784 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 17:30:38,784 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 17:30:38,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-10-12 17:30:38,949 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 467 transitions. [2023-10-12 17:30:38,950 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:38,986 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:38,987 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 17:30:38,987 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 17:30:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 300 transitions. [2023-10-12 17:30:38,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 300 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:30:38,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:38,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 300 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:30:38,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:38,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 300 transitions. Stem has 5 letters. Loop has 4 letters. [2023-10-12 17:30:38,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:38,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 5486 transitions, 61628 flow [2023-10-12 17:30:41,024 INFO L124 PetriNetUnfolderBase]: 5980/8030 cut-off events. [2023-10-12 17:30:41,024 INFO L125 PetriNetUnfolderBase]: For 1884/1884 co-relation queries the response was YES. [2023-10-12 17:30:41,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42205 conditions, 8030 events. 5980/8030 cut-off events. For 1884/1884 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 36599 event pairs, 222 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 17:30:41,031 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 60 places, 5486 transitions, 61628 flow [2023-10-12 17:30:41,112 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 60 places, 5486 transitions, 61628 flow [2023-10-12 17:30:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:30:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:30:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:30:41,113 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 17:30:41,113 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:30:41,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:30:43,447 INFO L124 PetriNetUnfolderBase]: 5666/7754 cut-off events. [2023-10-12 17:30:43,447 INFO L125 PetriNetUnfolderBase]: For 1972/1972 co-relation queries the response was YES. [2023-10-12 17:30:43,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48567 conditions, 7754 events. 5666/7754 cut-off events. For 1972/1972 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 36790 event pairs, 174 based on Foata normal form. 0/4615 useless extension candidates. Maximal degree in co-relation 32882. Up to 6003 conditions per place. [2023-10-12 17:30:43,491 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 877 selfloop transitions, 76 changer transitions 657/1610 dead transitions. [2023-10-12 17:30:43,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 1610 transitions, 20910 flow [2023-10-12 17:30:43,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 1610 transitions, 20910 flow [2023-10-12 17:30:44,222 INFO L124 PetriNetUnfolderBase]: 5666/7754 cut-off events. [2023-10-12 17:30:44,222 INFO L125 PetriNetUnfolderBase]: For 1972/1972 co-relation queries the response was YES. [2023-10-12 17:30:44,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48567 conditions, 7754 events. 5666/7754 cut-off events. For 1972/1972 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 36791 event pairs, 174 based on Foata normal form. 0/4615 useless extension candidates. Maximal degree in co-relation 32882. Up to 6003 conditions per place. [2023-10-12 17:30:44,227 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 58 places, 1610 transitions, 20910 flow [2023-10-12 17:30:44,249 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 58 places, 1610 transitions, 20910 flow [2023-10-12 17:30:44,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-10-12 17:30:44,250 INFO L430 stractBuchiCegarLoop]: Abstraction has has 58 places, 1610 transitions, 20910 flow [2023-10-12 17:30:44,250 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:30:44,250 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 58 places, 1610 transitions, 20910 flow [2023-10-12 17:30:44,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:44,386 INFO L124 PetriNetUnfolderBase]: 768/1063 cut-off events. [2023-10-12 17:30:44,386 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2023-10-12 17:30:44,386 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:44,386 INFO L748 eck$LassoCheckResult]: Stem: 52#[$Ultimate##0]true [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 54#[L74]true [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 56#[L22-1, L74-1]true [115] L74-1-->L33-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 101#[L22-1, L75, L33-1]true [137] L22-1-->L22-1: Formula: (and (< v_i1_13 v_N1_12) (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_31 1) v_counter1_30)) InVars {counter1=v_counter1_31, i1=v_i1_13, N1=v_N1_12} OutVars{counter1=v_counter1_30, i1=v_i1_12, N1=v_N1_12} AuxVars[] AssignedVars[counter1, i1] 101#[L22-1, L75, L33-1]true [131] L33-1-->L33-1: Formula: (and (< v_i2_17 v_N2_12) (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_12} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_12} AuxVars[] AssignedVars[counter1, i2] 101#[L22-1, L75, L33-1]true [2023-10-12 17:30:44,387 INFO L750 eck$LassoCheckResult]: Loop: 101#[L22-1, L75, L33-1]true [131] L33-1-->L33-1: Formula: (and (< v_i2_17 v_N2_12) (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_12} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_12} AuxVars[] AssignedVars[counter1, i2] 101#[L22-1, L75, L33-1]true [131] L33-1-->L33-1: Formula: (and (< v_i2_17 v_N2_12) (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_12} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_12} AuxVars[] AssignedVars[counter1, i2] 101#[L22-1, L75, L33-1]true [2023-10-12 17:30:44,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash 163220618, now seen corresponding path program 1 times [2023-10-12 17:30:44,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:44,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789878196] [2023-10-12 17:30:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:44,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:44,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,407 INFO L85 PathProgramCache]: Analyzing trace with hash 5153, now seen corresponding path program 2 times [2023-10-12 17:30:44,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:44,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575822031] [2023-10-12 17:30:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:44,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2058771862, now seen corresponding path program 2 times [2023-10-12 17:30:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601966418] [2023-10-12 17:30:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:30:44,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:44,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601966418] [2023-10-12 17:30:44,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601966418] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:30:44,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:30:44,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-10-12 17:30:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788866172] [2023-10-12 17:30:44,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:30:44,517 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:44,518 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:44,518 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:44,518 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:44,518 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:44,518 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,518 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:44,518 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:44,518 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:30:44,518 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:44,518 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:44,520 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 17:30:44,525 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 17:30:44,552 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:44,553 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:44,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,557 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 17:30:44,560 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 17:30:44,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:44,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:44,591 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 17:30:44,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,593 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 17:30:44,595 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 17:30:44,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:44,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:44,665 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:44,669 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 17:30:44,669 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:44,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:44,670 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:44,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:44,670 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:44,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:44,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:44,670 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:30:44,670 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:44,670 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:44,671 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 17:30:44,681 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 17:30:44,708 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:44,708 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:44,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,837 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 17:30:44,839 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 17:30:44,841 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 17:30:44,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:44,848 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:44,848 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:44,848 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:44,848 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:44,849 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:44,849 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:44,851 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:44,853 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:30:44,853 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:30:44,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,865 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 17:30:44,870 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 17:30:44,871 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:44,871 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:44,871 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:44,871 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter1) = 1*counter1 Supporting invariants [] [2023-10-12 17:30:44,878 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 17:30:44,879 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:44,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:44,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:44,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:44,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:44,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:44,917 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 17:30:44,917 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 17:30:44,917 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 17:30:45,007 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 6 states and 406 transitions. [2023-10-12 17:30:45,008 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:45,165 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:45,165 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 17:30:45,167 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 17:30:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2023-10-12 17:30:45,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:30:45,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:45,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:30:45,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:45,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 5 letters. Loop has 4 letters. [2023-10-12 17:30:45,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:45,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 22076 transitions, 331324 flow [2023-10-12 17:30:46,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-10-12 17:31:14,990 INFO L124 PetriNetUnfolderBase]: 16747/22569 cut-off events. [2023-10-12 17:31:14,991 INFO L125 PetriNetUnfolderBase]: For 5571/5571 co-relation queries the response was YES. [2023-10-12 17:31:15,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163749 conditions, 22569 events. 16747/22569 cut-off events. For 5571/5571 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 120368 event pairs, 237 based on Foata normal form. 0/12751 useless extension candidates. Maximal degree in co-relation 107598. Up to 20818 conditions per place. [2023-10-12 17:31:15,007 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 70 places, 22076 transitions, 331324 flow [2023-10-12 17:31:15,282 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 70 places, 22076 transitions, 331324 flow [2023-10-12 17:31:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:31:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:31:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:31:15,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 22076 transitions, 331324 flow. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:31:15,283 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:31:15,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:32:19,538 INFO L124 PetriNetUnfolderBase]: 31626/42915 cut-off events. [2023-10-12 17:32:19,539 INFO L125 PetriNetUnfolderBase]: For 10260/10260 co-relation queries the response was YES. [2023-10-12 17:32:19,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354306 conditions, 42915 events. 31626/42915 cut-off events. For 10260/10260 co-relation queries the response was YES. Maximal size of possible extension queue 2108. Compared 251821 event pairs, 267 based on Foata normal form. 0/24573 useless extension candidates. Maximal degree in co-relation 229686. Up to 41164 conditions per place. [2023-10-12 17:32:19,767 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 3906 selfloop transitions, 153 changer transitions 4443/8502 dead transitions. [2023-10-12 17:32:19,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 8502 transitions, 145122 flow [2023-10-12 17:32:19,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 8502 transitions, 145122 flow [2023-10-12 17:32:41,482 INFO L124 PetriNetUnfolderBase]: 31626/42915 cut-off events. [2023-10-12 17:32:41,482 INFO L125 PetriNetUnfolderBase]: For 10260/10260 co-relation queries the response was YES. [2023-10-12 17:32:41,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354306 conditions, 42915 events. 31626/42915 cut-off events. For 10260/10260 co-relation queries the response was YES. Maximal size of possible extension queue 2108. Compared 251859 event pairs, 267 based on Foata normal form. 0/24573 useless extension candidates. Maximal degree in co-relation 229686. Up to 41164 conditions per place. [2023-10-12 17:32:41,517 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 71 places, 8502 transitions, 145122 flow [2023-10-12 17:32:41,618 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 71 places, 8502 transitions, 145122 flow [2023-10-12 17:32:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-10-12 17:32:41,619 INFO L430 stractBuchiCegarLoop]: Abstraction has has 71 places, 8502 transitions, 145122 flow [2023-10-12 17:32:41,619 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:32:41,620 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 71 places, 8502 transitions, 145122 flow [2023-10-12 17:32:42,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:32:42,875 INFO L124 PetriNetUnfolderBase]: 1550/2151 cut-off events. [2023-10-12 17:32:42,875 INFO L125 PetriNetUnfolderBase]: For 404/404 co-relation queries the response was YES. [2023-10-12 17:32:42,875 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:32:42,875 INFO L748 eck$LassoCheckResult]: Stem: 52#[$Ultimate##0]true [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 54#[L74]true [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 56#[L22-1, L74-1]true [115] L74-1-->L33-1: 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] 101#[L22-1, L75, L33-1]true [118] L75-->L45-1: 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] 279#[L22-1, L33-1, L45-1, L76]true [137] L22-1-->L22-1: Formula: (and (< v_i1_13 v_N1_12) (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_31 1) v_counter1_30)) InVars {counter1=v_counter1_31, i1=v_i1_13, N1=v_N1_12} OutVars{counter1=v_counter1_30, i1=v_i1_12, N1=v_N1_12} AuxVars[] AssignedVars[counter1, i1] 279#[L22-1, L33-1, L45-1, L76]true [121] L76-->L56-1: 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] 282#[L22-1, L45-1, L33-1, L56-1, L77]true [130] L33-1-->thread2EXIT: Formula: (<= v_N2_10 v_i2_14) InVars {i2=v_i2_14, N2=v_N2_10} OutVars{i2=v_i2_14, N2=v_N2_10} AuxVars[] AssignedVars[] 284#[L22-1, thread2EXIT, L45-1, L56-1, L77]true [129] L56-1-->L56-1: Formula: (and (< v_j2_19 v_N2_8) (< 0 v_counter2_23) (= (+ v_counter2_22 1) v_counter2_23) (= v_j2_18 (+ v_j2_19 1))) InVars {counter2=v_counter2_23, j2=v_j2_19, N2=v_N2_8} OutVars{counter2=v_counter2_22, j2=v_j2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter2, j2] 284#[L22-1, thread2EXIT, L45-1, L56-1, L77]true [2023-10-12 17:32:42,876 INFO L750 eck$LassoCheckResult]: Loop: 284#[L22-1, thread2EXIT, L45-1, L56-1, L77]true [129] L56-1-->L56-1: Formula: (and (< v_j2_19 v_N2_8) (< 0 v_counter2_23) (= (+ v_counter2_22 1) v_counter2_23) (= v_j2_18 (+ v_j2_19 1))) InVars {counter2=v_counter2_23, j2=v_j2_19, N2=v_N2_8} OutVars{counter2=v_counter2_22, j2=v_j2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter2, j2] 284#[L22-1, thread2EXIT, L45-1, L56-1, L77]true [129] L56-1-->L56-1: Formula: (and (< v_j2_19 v_N2_8) (< 0 v_counter2_23) (= (+ v_counter2_22 1) v_counter2_23) (= v_j2_18 (+ v_j2_19 1))) InVars {counter2=v_counter2_23, j2=v_j2_19, N2=v_N2_8} OutVars{counter2=v_counter2_22, j2=v_j2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter2, j2] 284#[L22-1, thread2EXIT, L45-1, L56-1, L77]true [2023-10-12 17:32:42,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:32:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash 585204053, now seen corresponding path program 1 times [2023-10-12 17:32:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:32:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998785365] [2023-10-12 17:32:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:32:42,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:32:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:32:42,895 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 17:32:42,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:32:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998785365] [2023-10-12 17:32:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998785365] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:32:42,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:32:42,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:32:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743961306] [2023-10-12 17:32:42,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:32:42,896 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-10-12 17:32:42,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:32:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash 5089, now seen corresponding path program 1 times [2023-10-12 17:32:42,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:32:42,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969526482] [2023-10-12 17:32:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:32:42,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:32:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:32:42,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:32:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:32:42,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:32:42,935 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:32:42,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:32:42,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:32:42,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:32:42,935 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:32:42,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:32:42,935 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:32:42,935 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:32:42,935 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:32:42,935 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:32:42,935 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:32:42,936 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 17:32:42,940 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 17:32:42,963 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:32:42,963 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:32:42,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:32:42,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:32:42,969 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 17:32:42,972 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 17:32:42,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:32:42,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:32:42,997 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 17:32:42,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:32:42,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:32:43,000 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 17:32:43,002 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 17:32:43,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:32:43,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:32:43,077 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:32:43,083 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 17:32:43,083 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:32:43,083 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:32:43,083 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:32:43,083 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:32:43,083 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:32:43,083 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:32:43,083 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:32:43,083 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:32:43,083 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:32:43,083 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:32:43,083 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:32:43,084 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 17:32:43,089 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 17:32:43,114 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:32:43,114 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:32:43,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:32:43,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:32:43,116 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 17:32:43,121 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 17:32:43,121 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 17:32:43,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:32:43,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:32:43,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:32:43,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:32:43,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:32:43,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:32:43,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:32:43,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:32:43,140 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:32:43,140 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:32:43,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:32:43,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:32:43,147 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 17:32:43,148 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 17:32:43,149 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:32:43,149 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:32:43,149 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:32:43,149 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter2) = 1*counter2 Supporting invariants [] [2023-10-12 17:32:43,152 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 17:32:43,152 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:32:43,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:32:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:32:43,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:32:43,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:32:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:32:43,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:32:43,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:32:43,195 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 17:32:43,195 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 17:32:43,196 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:32:43,276 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 406 transitions. [2023-10-12 17:32:43,277 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:32:43,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-10-12 17:32:44,615 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:32:44,616 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 17:32:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:32:44,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2023-10-12 17:32:44,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 8 letters. Loop has 2 letters. [2023-10-12 17:32:44,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:32:44,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 10 letters. Loop has 2 letters. [2023-10-12 17:32:44,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:32:44,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 8 letters. Loop has 4 letters. [2023-10-12 17:32:44,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:32:44,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 114400 transitions, 2186460 flow Received shutdown request... [2023-10-12 17:34:37,081 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 17:34:37,135 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 17:34:37,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:34:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:34:37,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:34:37,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 114400 transitions, 2186460 flow. Second operand has 3 states, 2 states have (on average 4.0) 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 17:34:37,140 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:34:37,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:34:37,247 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 17:34:37,249 INFO L158 Benchmark]: Toolchain (without parser) took 242453.23ms. Allocated memory was 178.3MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 126.9MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 939.8MB. Max. memory is 8.0GB. [2023-10-12 17:34:37,250 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.18ms. Allocated memory is still 178.3MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:34:37,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.67ms. Allocated memory is still 178.3MB. Free memory was 126.7MB in the beginning and 125.2MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-10-12 17:34:37,253 INFO L158 Benchmark]: Boogie Preprocessor took 22.90ms. Allocated memory is still 178.3MB. Free memory was 125.2MB in the beginning and 124.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:34:37,256 INFO L158 Benchmark]: RCFGBuilder took 292.19ms. Allocated memory is still 178.3MB. Free memory was 124.2MB in the beginning and 113.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:34:37,257 INFO L158 Benchmark]: BuchiAutomizer took 242109.66ms. Allocated memory was 178.3MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 113.2MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 925.1MB. Max. memory is 8.0GB. [2023-10-12 17:34:37,268 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 0.18ms. Allocated memory is still 178.3MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.67ms. Allocated memory is still 178.3MB. Free memory was 126.7MB in the beginning and 125.2MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.90ms. Allocated memory is still 178.3MB. Free memory was 125.2MB in the beginning and 124.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 292.19ms. Allocated memory is still 178.3MB. Free memory was 124.2MB in the beginning and 113.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 242109.66ms. Allocated memory was 178.3MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 113.2MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 925.1MB. 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: 0.3s, 44 PlacesBefore, 28 PlacesAfterwards, 35 TransitionsBefore, 19 TransitionsAfterwards, 288 CoEnabledTransitionPairs, 3 FixpointIterations, 9 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 17 TotalNumberOfCompositions, 258 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 258, independent: 258, independent conditional: 0, independent unconditional: 258, 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: 168, independent: 168, independent conditional: 0, independent unconditional: 168, 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: 168, independent: 168, independent conditional: 0, independent unconditional: 168, 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: 258, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 168, unknown conditional: 0, unknown unconditional: 168] , 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 [2023-10-12 17:34:37,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 !SESSION 2023-10-12 17:30:32.080 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.18 java.vendor=Debian BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -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/counter-determinism.wvr.bpl Command-line arguments: -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/counter-determinism.wvr.bpl !ENTRY org.eclipse.osgi 4 0 2023-10-12 17:34:37.538 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd33988b5/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd33988b5/.metadata/.log.