/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/parallel/misc-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:24:47,777 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:24:47,835 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 17:24:47,859 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:24:47,860 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:24:47,860 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:24:47,862 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:24:47,862 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:24:47,862 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:24:47,865 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:24:47,865 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:24:47,866 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:24:47,866 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:24:47,867 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:24:47,867 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:24:47,867 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:24:47,867 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:24:47,868 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:24:47,868 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:24:47,868 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:24:47,868 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:24:47,869 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:24:47,869 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:24:47,869 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:24:47,869 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:24:47,869 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:24:47,869 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:24:47,869 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:24:47,870 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:24:47,870 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:24:47,870 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:24:47,871 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:24:47,871 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:24:47,872 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:24:47,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:24:48,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:24:48,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:24:48,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:24:48,062 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:24:48,063 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:24:48,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl [2023-10-12 17:24:48,064 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-4.wvr.bpl' [2023-10-12 17:24:48,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:24:48,080 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:24:48,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:24:48,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:24:48,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:24:48,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,095 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,098 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:24:48,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:24:48,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:24:48,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:24:48,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:24:48,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:24:48,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:24:48,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:24:48,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:24:48,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/1) ... [2023-10-12 17:24:48,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:48,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:48,139 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 17:24:48,159 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 17:24:48,165 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:24:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:24:48,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:24:48,166 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:24:48,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:24:48,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:24:48,166 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:24:48,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:24:48,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:24:48,166 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:24:48,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:24:48,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:24:48,168 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 17:24:48,200 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:24:48,202 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:24:48,277 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:24:48,281 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:24:48,282 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:24:48,283 INFO L201 PluginConnector]: Adding new model misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:24:48 BoogieIcfgContainer [2023-10-12 17:24:48,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:24:48,284 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:24:48,284 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:24:48,286 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:24:48,287 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:24:48,287 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:48" (1/2) ... [2023-10-12 17:24:48,288 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e485568 and model type misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:24:48, skipping insertion in model container [2023-10-12 17:24:48,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:24:48,288 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:24:48" (2/2) ... [2023-10-12 17:24:48,289 INFO L332 chiAutomizerObserver]: Analyzing ICFG misc-4.wvr.bpl [2023-10-12 17:24:48,379 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-10-12 17:24:48,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 34 transitions, 92 flow [2023-10-12 17:24:48,425 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2023-10-12 17:24:48,425 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:24:48,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 4/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-10-12 17:24:48,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 34 transitions, 92 flow [2023-10-12 17:24:48,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 28 transitions, 74 flow [2023-10-12 17:24:48,434 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:24:48,444 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 28 transitions, 74 flow [2023-10-12 17:24:48,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 28 transitions, 74 flow [2023-10-12 17:24:48,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 28 transitions, 74 flow [2023-10-12 17:24:48,452 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2023-10-12 17:24:48,452 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:24:48,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 4/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-10-12 17:24:48,454 INFO L119 LiptonReduction]: Number of co-enabled transitions 264 [2023-10-12 17:24:48,764 INFO L134 LiptonReduction]: Checked pairs total: 405 [2023-10-12 17:24:48,764 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-10-12 17:24:48,773 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:24:48,774 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:24:48,774 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:24:48,774 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:24:48,774 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:24:48,774 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:24:48,774 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:24:48,774 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:24:48,775 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 places, 20 transitions, 58 flow [2023-10-12 17:24:48,778 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:48,778 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-10-12 17:24:48,778 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:24:48,779 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:48,781 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:24:48,781 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 places, 20 transitions, 58 flow [2023-10-12 17:24:48,782 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:48,782 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-10-12 17:24:48,783 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:24:48,783 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:48,786 INFO L748 eck$LassoCheckResult]: Stem: 41#[$Ultimate##0]true [64] $Ultimate##0-->L56: Formula: (and (or (and v_d2_5 v_d1_5) (and (not v_d2_5) (not v_d1_5))) v_d1_5 (= v_pos_9 0) v_v_assert_5) InVars {pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} OutVars{pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} AuxVars[] AssignedVars[] 43#[L56]true [96] L56-->L17: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0] 45#[L17, L56-1]true [2023-10-12 17:24:48,786 INFO L750 eck$LassoCheckResult]: Loop: 45#[L17, L56-1]true [104] L17-->L19: Formula: (and v_d1_6 v_v_assert_19) InVars {d1=v_d1_6, v_assert=v_v_assert_19} OutVars{d1=v_d1_6, v_assert=v_v_assert_19} AuxVars[] AssignedVars[] 48#[L56-1, L19]true [107] L19-->L17: Formula: (and (or (and v_d1_14 (not v_d1_15)) (and (not v_d1_14) v_d1_15)) (= (+ v_pos_68 1) v_pos_67)) InVars {d1=v_d1_15, pos=v_pos_68} OutVars{d1=v_d1_14, pos=v_pos_67} AuxVars[] AssignedVars[d1, pos] 45#[L17, L56-1]true [2023-10-12 17:24:48,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash 3041, now seen corresponding path program 1 times [2023-10-12 17:24:48,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:48,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230270787] [2023-10-12 17:24:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:48,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:48,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:48,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:48,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash 4292, now seen corresponding path program 1 times [2023-10-12 17:24:48,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:48,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854347432] [2023-10-12 17:24:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:48,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:48,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:48,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2925732, now seen corresponding path program 1 times [2023-10-12 17:24:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484429564] [2023-10-12 17:24:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:48,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:48,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:48,924 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:48,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:48,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:48,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:48,925 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:24:48,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:48,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:48,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:48,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:24:48,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:48,925 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:48,935 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 17:24:48,940 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 17:24:48,943 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 17:24:48,969 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:48,970 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:24:48,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:48,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:48,974 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 17:24:48,977 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 17:24:48,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:48,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:48,992 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:24:48,992 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep(ite v_assert 1 0)_1=1} Honda state: {v_rep(ite v_assert 1 0)_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:24:49,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-10-12 17:24:49,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,008 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 17:24:49,010 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 17:24:49,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:49,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:49,037 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 17:24:49,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,039 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 17:24:49,039 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 17:24:49,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:49,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:49,078 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:24:49,078 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {pos=0} Honda state: {pos=0} Generalized eigenvectors: [{pos=1}, {pos=7}, {pos=-7}] Lambdas: [1, 1, 1] Nus: [0, 0] [2023-10-12 17:24:49,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:49,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,083 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 17:24:49,085 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 17:24:49,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:49,086 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:49,116 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 17:24:49,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,117 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 17:24:49,119 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 17:24:49,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:49,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:49,138 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:24:49,143 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 17:24:49,144 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:49,144 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:49,144 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:49,144 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:49,144 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:24:49,144 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,145 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:49,145 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:49,145 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:24:49,145 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:49,145 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:49,146 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 17:24:49,149 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 17:24:49,152 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 17:24:49,178 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:49,181 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:24:49,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,183 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 17:24:49,185 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 17:24:49,187 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 17:24:49,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:49,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:49,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:49,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:49,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:49,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:49,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:49,197 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:24:49,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-10-12 17:24:49,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,205 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 17:24:49,206 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 17:24:49,208 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 17:24:49,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:49,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:49,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:49,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:49,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:49,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:49,215 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:49,243 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:24:49,248 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 17:24:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,250 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 17:24:49,275 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 17:24:49,277 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 17:24:49,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:49,283 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:49,283 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:49,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:49,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:49,284 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:49,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:49,300 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:24:49,302 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:24:49,302 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:24:49,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,311 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 17:24:49,311 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 17:24:49,345 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:24:49,345 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:24:49,346 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:24:49,346 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(ite d1 1 0)_2) = 1*v_rep(ite d1 1 0)_2 Supporting invariants [] [2023-10-12 17:24:49,349 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 17:24:49,351 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:24:49,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:49,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:24:49,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:49,385 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:24:49,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:49,413 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 17:24:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:24:49,477 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 17:24:49,479 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:24:49,656 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 397 transitions. [2023-10-12 17:24:49,657 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:24:49,660 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:24:49,662 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 17:24:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:24:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2023-10-12 17:24:49,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:24:49,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:49,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:24:49,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:49,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 2 letters. Loop has 4 letters. [2023-10-12 17:24:49,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:49,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 340 transitions, 1684 flow [2023-10-12 17:24:49,729 INFO L124 PetriNetUnfolderBase]: 687/1015 cut-off events. [2023-10-12 17:24:49,730 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2023-10-12 17:24:49,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2296 conditions, 1015 events. 687/1015 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4090 event pairs, 77 based on Foata normal form. 0/649 useless extension candidates. Maximal degree in co-relation 1954. Up to 198 conditions per place. [2023-10-12 17:24:49,732 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 42 places, 340 transitions, 1684 flow [2023-10-12 17:24:49,736 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 42 places, 340 transitions, 1684 flow [2023-10-12 17:24:49,737 INFO L430 stractBuchiCegarLoop]: Abstraction has has 42 places, 340 transitions, 1684 flow [2023-10-12 17:24:49,737 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:24:49,737 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 42 places, 340 transitions, 1684 flow [2023-10-12 17:24:49,740 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:49,741 INFO L124 PetriNetUnfolderBase]: 31/53 cut-off events. [2023-10-12 17:24:49,741 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-10-12 17:24:49,741 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:49,741 INFO L748 eck$LassoCheckResult]: Stem: 41#[$Ultimate##0]true [64] $Ultimate##0-->L56: Formula: (and (or (and v_d2_5 v_d1_5) (and (not v_d2_5) (not v_d1_5))) v_d1_5 (= v_pos_9 0) v_v_assert_5) InVars {pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} OutVars{pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} AuxVars[] AssignedVars[] 43#[L56]true [96] L56-->L17: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0] 45#[L17, L56-1]true [90] L56-1-->L33: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0] 104#[L33, L17, L57]true [2023-10-12 17:24:49,741 INFO L750 eck$LassoCheckResult]: Loop: 104#[L33, L17, L57]true [110] L33-->L39: Formula: (and (not v_d2_16) v_v_assert_37) InVars {d2=v_d2_16, v_assert=v_v_assert_37} OutVars{d2=v_d2_16, v_assert=v_v_assert_37} AuxVars[] AssignedVars[] 107#[L39, L17, L57]true [102] L39-->L33: Formula: (and (= (+ 2 v_pos_23) v_pos_24) (or (and (not v_d2_11) v_d2_10) (and (not v_d2_10) v_d2_11))) InVars {d2=v_d2_11, pos=v_pos_24} OutVars{d2=v_d2_10, pos=v_pos_23} AuxVars[] AssignedVars[d2, pos] 104#[L33, L17, L57]true [2023-10-12 17:24:49,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash 94361, now seen corresponding path program 1 times [2023-10-12 17:24:49,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:49,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71416048] [2023-10-12 17:24:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:49,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:49,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:49,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:49,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:49,748 INFO L85 PathProgramCache]: Analyzing trace with hash 4473, now seen corresponding path program 1 times [2023-10-12 17:24:49,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:49,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322701163] [2023-10-12 17:24:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:49,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:49,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:49,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:49,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:49,753 INFO L85 PathProgramCache]: Analyzing trace with hash 90684433, now seen corresponding path program 1 times [2023-10-12 17:24:49,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:49,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901850958] [2023-10-12 17:24:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:49,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:49,780 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 17:24:49,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:24:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901850958] [2023-10-12 17:24:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901850958] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:24:49,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:24:49,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:24:49,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257621405] [2023-10-12 17:24:49,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:24:49,806 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:49,806 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:49,806 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:49,806 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:49,806 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:24:49,806 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,806 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:49,807 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:49,807 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:24:49,807 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:49,807 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:49,807 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 17:24:49,809 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 17:24:49,812 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 17:24:49,830 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:49,830 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:24:49,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,847 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 17:24:49,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:49,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:49,877 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 17:24:49,885 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:24:49,885 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep(ite v_assert 1 0)_3=1} Honda state: {v_rep(ite v_assert 1 0)_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:24:49,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-10-12 17:24:49,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,909 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 17:24:49,911 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 17:24:49,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:49,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:49,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:49,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,960 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 17:24:49,962 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 17:24:49,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:49,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:49,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:24:49,985 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {pos=0} Honda state: {pos=0} Generalized eigenvectors: [{pos=0}, {pos=-1}, {pos=-1}] Lambdas: [6, 0, 1] Nus: [0, 1] [2023-10-12 17:24:49,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:49,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:49,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:49,990 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 17:24:50,021 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 17:24:50,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:50,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:50,032 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 17:24:50,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:50,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:50,033 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 17:24:50,035 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 17:24:50,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:50,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:50,059 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:24:50,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-10-12 17:24:50,076 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:50,077 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:50,077 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:50,077 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:50,077 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:24:50,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:50,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:50,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:50,077 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:24:50,077 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:50,077 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:50,078 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 17:24:50,080 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 17:24:50,083 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 17:24:50,103 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:50,103 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:24:50,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:50,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:50,104 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 17:24:50,119 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 17:24:50,119 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 17:24:50,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:50,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:50,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:50,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:50,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:50,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:50,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:50,141 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:24:50,144 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 17:24:50,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:50,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:50,146 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 17:24:50,148 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 17:24:50,149 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 17:24:50,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:50,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:50,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:50,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:50,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:50,156 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:50,156 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:50,169 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:24:50,171 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 17:24:50,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:50,173 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 17:24:50,176 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 17:24:50,177 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 17:24:50,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:50,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:50,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:50,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:50,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:50,184 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:50,184 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:50,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:24:50,210 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:24:50,211 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:24:50,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:50,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:50,221 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 17:24:50,222 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 17:24:50,225 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:24:50,225 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:24:50,225 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:24:50,225 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(ite d2 1 0)_2) = -2*v_rep(ite d2 1 0)_2 + 1 Supporting invariants [] [2023-10-12 17:24:50,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-10-12 17:24:50,229 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:24:50,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:50,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:24:50,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:50,257 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:24:50,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:50,278 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 17:24:50,279 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 17:24:50,279 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 17:24:50,367 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 8 states and 396 transitions. [2023-10-12 17:24:50,367 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:24:50,392 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:24:50,393 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 17:24:50,393 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 17:24:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2023-10-12 17:24:50,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:24:50,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:50,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:24:50,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:50,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:24:50,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:50,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 5760 transitions, 40392 flow [2023-10-12 17:24:50,777 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 17:24:50,926 INFO L124 PetriNetUnfolderBase]: 2910/4175 cut-off events. [2023-10-12 17:24:50,927 INFO L125 PetriNetUnfolderBase]: For 766/766 co-relation queries the response was YES. [2023-10-12 17:24:50,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13528 conditions, 4175 events. 2910/4175 cut-off events. For 766/766 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20567 event pairs, 64 based on Foata normal form. 0/2362 useless extension candidates. Maximal degree in co-relation 11510. Up to 941 conditions per place. [2023-10-12 17:24:50,932 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 58 places, 5760 transitions, 40392 flow [2023-10-12 17:24:50,974 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 58 places, 5760 transitions, 40392 flow [2023-10-12 17:24:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:24:50,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:24:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:24:50,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 5760 transitions, 40392 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 17:24:50,978 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:24:50,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:24:51,521 INFO L124 PetriNetUnfolderBase]: 1641/2483 cut-off events. [2023-10-12 17:24:51,522 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2023-10-12 17:24:51,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10632 conditions, 2483 events. 1641/2483 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11782 event pairs, 12 based on Foata normal form. 0/1587 useless extension candidates. Maximal degree in co-relation 9160. Up to 1628 conditions per place. [2023-10-12 17:24:51,535 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 326 selfloop transitions, 38 changer transitions 154/518 dead transitions. [2023-10-12 17:24:51,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 518 transitions, 4519 flow [2023-10-12 17:24:51,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 518 transitions, 4519 flow [2023-10-12 17:24:51,719 INFO L124 PetriNetUnfolderBase]: 1641/2483 cut-off events. [2023-10-12 17:24:51,719 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2023-10-12 17:24:51,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10632 conditions, 2483 events. 1641/2483 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11769 event pairs, 12 based on Foata normal form. 0/1587 useless extension candidates. Maximal degree in co-relation 9160. Up to 1628 conditions per place. [2023-10-12 17:24:51,723 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 49 places, 518 transitions, 4519 flow [2023-10-12 17:24:51,729 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 49 places, 518 transitions, 4519 flow [2023-10-12 17:24:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:24:51,730 INFO L430 stractBuchiCegarLoop]: Abstraction has has 49 places, 518 transitions, 4519 flow [2023-10-12 17:24:51,730 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:24:51,730 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 49 places, 518 transitions, 4519 flow [2023-10-12 17:24:51,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:51,747 INFO L124 PetriNetUnfolderBase]: 122/194 cut-off events. [2023-10-12 17:24:51,747 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-10-12 17:24:51,747 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:51,748 INFO L748 eck$LassoCheckResult]: Stem: 41#[$Ultimate##0]true [64] $Ultimate##0-->L56: Formula: (and (or (and v_d2_5 v_d1_5) (and (not v_d2_5) (not v_d1_5))) v_d1_5 (= v_pos_9 0) v_v_assert_5) InVars {pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} OutVars{pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} AuxVars[] AssignedVars[] 43#[L56]true [96] L56-->L17: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0] 45#[L17, L56-1]true [105] L17-->L23: Formula: (and (not v_d1_8) v_v_assert_21) InVars {d1=v_d1_8, v_assert=v_v_assert_21} OutVars{d1=v_d1_8, v_assert=v_v_assert_21} AuxVars[] AssignedVars[] 161#[L23, L56-1]true [106] L23-->L17: Formula: (and (= (+ v_pos_47 1) v_pos_48) (or (and (not v_d1_10) v_d1_11) (and (not v_d1_11) v_d1_10))) InVars {d1=v_d1_11, pos=v_pos_48} OutVars{d1=v_d1_10, pos=v_pos_47} AuxVars[] AssignedVars[d1, pos] 45#[L17, L56-1]true [2023-10-12 17:24:51,748 INFO L750 eck$LassoCheckResult]: Loop: 45#[L17, L56-1]true [105] L17-->L23: Formula: (and (not v_d1_8) v_v_assert_21) InVars {d1=v_d1_8, v_assert=v_v_assert_21} OutVars{d1=v_d1_8, v_assert=v_v_assert_21} AuxVars[] AssignedVars[] 161#[L23, L56-1]true [106] L23-->L17: Formula: (and (= (+ v_pos_47 1) v_pos_48) (or (and (not v_d1_10) v_d1_11) (and (not v_d1_11) v_d1_10))) InVars {d1=v_d1_11, pos=v_pos_48} OutVars{d1=v_d1_10, pos=v_pos_47} AuxVars[] AssignedVars[d1, pos] 45#[L17, L56-1]true [2023-10-12 17:24:51,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2925762, now seen corresponding path program 1 times [2023-10-12 17:24:51,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579625672] [2023-10-12 17:24:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:51,759 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 17:24:51,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:24:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579625672] [2023-10-12 17:24:51,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579625672] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:24:51,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:24:51,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:24:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537431662] [2023-10-12 17:24:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:24:51,760 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-10-12 17:24:51,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 4322, now seen corresponding path program 1 times [2023-10-12 17:24:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:51,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81183722] [2023-10-12 17:24:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:51,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:51,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:51,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:51,788 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:51,788 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:51,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:51,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:51,788 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:24:51,788 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:51,788 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:51,788 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:51,788 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:24:51,788 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:51,788 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:51,789 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 17:24:51,793 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 17:24:51,797 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 17:24:51,821 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:51,821 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:24:51,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:51,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:51,825 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 17:24:51,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:51,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:51,867 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 17:24:51,891 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 17:24:51,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:51,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:51,893 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 17:24:51,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:51,901 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:51,919 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 17:24:51,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:24:51,924 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {pos=0} Honda state: {pos=0} Generalized eigenvectors: [{pos=1}, {pos=-1}, {pos=-1}] Lambdas: [1, 0, 1] Nus: [0, 1] [2023-10-12 17:24:51,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:51,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:51,930 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:51,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-10-12 17:24:51,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:51,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:51,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:51,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:51,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:51,949 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:51,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-10-12 17:24:51,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:51,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:51,970 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:24:51,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:51,975 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:51,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:51,976 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:51,976 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:51,976 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:24:51,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:51,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:51,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:51,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:24:51,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:51,976 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:51,977 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 17:24:51,984 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 17:24:51,989 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 17:24:52,008 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:52,009 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:24:52,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:52,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:52,010 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:52,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-10-12 17:24:52,013 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 17:24:52,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:52,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:52,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:52,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:52,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:52,020 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:52,021 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:52,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:24:52,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:52,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:52,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:52,029 INFO L229 MonitoredProcess]: Starting monitored process 25 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 17:24:52,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-10-12 17:24:52,032 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 17:24:52,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:52,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:52,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:52,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:52,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:52,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:52,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:52,054 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:24:52,057 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:24:52,057 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:24:52,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:52,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:52,065 INFO L229 MonitoredProcess]: Starting monitored process 26 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 17:24:52,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-10-12 17:24:52,106 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:24:52,106 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:24:52,106 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:24:52,106 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(ite d1 1 0)_4) = -2*v_rep(ite d1 1 0)_4 + 1 Supporting invariants [] [2023-10-12 17:24:52,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:52,112 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:24:52,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:52,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:24:52,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:52,134 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:24:52,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:52,143 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 17:24:52,144 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 17:24:52,144 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 17:24:52,223 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 8 states and 396 transitions. [2023-10-12 17:24:52,223 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:24:52,257 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:24:52,257 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 17:24:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 17:24:52,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2023-10-12 17:24:52,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:24:52,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:52,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 6 letters. Loop has 2 letters. [2023-10-12 17:24:52,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:52,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 4 letters. Loop has 4 letters. [2023-10-12 17:24:52,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:52,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 8956 transitions, 96310 flow [2023-10-12 17:24:52,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:54,853 INFO L124 PetriNetUnfolderBase]: 4031/5908 cut-off events. [2023-10-12 17:24:54,854 INFO L125 PetriNetUnfolderBase]: For 1023/1023 co-relation queries the response was YES. [2023-10-12 17:24:54,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31122 conditions, 5908 events. 4031/5908 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 30618 event pairs, 14 based on Foata normal form. 0/3523 useless extension candidates. Maximal degree in co-relation 27450. Up to 3851 conditions per place. [2023-10-12 17:24:54,861 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 65 places, 8956 transitions, 96310 flow [2023-10-12 17:24:54,982 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 65 places, 8956 transitions, 96310 flow [2023-10-12 17:24:54,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:24:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:24:54,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:24:54,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 8956 transitions, 96310 flow. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:24:54,983 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:24:54,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:24:58,632 INFO L124 PetriNetUnfolderBase]: 4316/6383 cut-off events. [2023-10-12 17:24:58,633 INFO L125 PetriNetUnfolderBase]: For 1169/1169 co-relation queries the response was YES. [2023-10-12 17:24:58,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40038 conditions, 6383 events. 4316/6383 cut-off events. For 1169/1169 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 34043 event pairs, 26 based on Foata normal form. 0/3858 useless extension candidates. Maximal degree in co-relation 34850. Up to 4651 conditions per place. [2023-10-12 17:24:58,667 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 1070 selfloop transitions, 102 changer transitions 539/1711 dead transitions. [2023-10-12 17:24:58,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 1711 transitions, 21750 flow [2023-10-12 17:24:58,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 1711 transitions, 21750 flow [2023-10-12 17:24:59,353 INFO L124 PetriNetUnfolderBase]: 4316/6383 cut-off events. [2023-10-12 17:24:59,353 INFO L125 PetriNetUnfolderBase]: For 1169/1169 co-relation queries the response was YES. [2023-10-12 17:24:59,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40038 conditions, 6383 events. 4316/6383 cut-off events. For 1169/1169 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 34002 event pairs, 26 based on Foata normal form. 0/3858 useless extension candidates. Maximal degree in co-relation 34850. Up to 4651 conditions per place. [2023-10-12 17:24:59,358 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 65 places, 1711 transitions, 21750 flow [2023-10-12 17:24:59,371 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 65 places, 1711 transitions, 21750 flow [2023-10-12 17:24:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:24:59,372 INFO L430 stractBuchiCegarLoop]: Abstraction has has 65 places, 1711 transitions, 21750 flow [2023-10-12 17:24:59,372 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:24:59,372 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 65 places, 1711 transitions, 21750 flow [2023-10-12 17:24:59,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:59,444 INFO L124 PetriNetUnfolderBase]: 362/550 cut-off events. [2023-10-12 17:24:59,444 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-10-12 17:24:59,445 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:59,445 INFO L748 eck$LassoCheckResult]: Stem: 41#[$Ultimate##0]true [64] $Ultimate##0-->L56: Formula: (and (or (and v_d2_5 v_d1_5) (and (not v_d2_5) (not v_d1_5))) v_d1_5 (= v_pos_9 0) v_v_assert_5) InVars {pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} OutVars{pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} AuxVars[] AssignedVars[] 43#[L56]true [96] L56-->L17: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0] 45#[L17, L56-1]true [103] L17-->thread1EXIT: Formula: (not v_v_assert_14) InVars {v_assert=v_v_assert_14} OutVars{v_assert=v_v_assert_14} AuxVars[] AssignedVars[] 219#[thread1EXIT, L56-1]true [90] L56-1-->L33: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0] 221#[L33, thread1EXIT, L57]true [109] L33-->L35: Formula: (and v_d2_14 v_v_assert_35) InVars {d2=v_d2_14, v_assert=v_v_assert_35} OutVars{d2=v_d2_14, v_assert=v_v_assert_35} AuxVars[] AssignedVars[] 223#[L35, thread1EXIT, L57]true [101] L35-->L33: Formula: (and (or (and v_d2_7 (not v_d2_6)) (and (not v_d2_7) v_d2_6)) (= (+ 2 v_pos_16) v_pos_15)) InVars {d2=v_d2_7, pos=v_pos_16} OutVars{d2=v_d2_6, pos=v_pos_15} AuxVars[] AssignedVars[d2, pos] 221#[L33, thread1EXIT, L57]true [2023-10-12 17:24:59,445 INFO L750 eck$LassoCheckResult]: Loop: 221#[L33, thread1EXIT, L57]true [110] L33-->L39: Formula: (and (not v_d2_16) v_v_assert_37) InVars {d2=v_d2_16, v_assert=v_v_assert_37} OutVars{d2=v_d2_16, v_assert=v_v_assert_37} AuxVars[] AssignedVars[] 227#[L39, thread1EXIT, L57]true [102] L39-->L33: Formula: (and (= (+ 2 v_pos_23) v_pos_24) (or (and (not v_d2_11) v_d2_10) (and (not v_d2_10) v_d2_11))) InVars {d2=v_d2_11, pos=v_pos_24} OutVars{d2=v_d2_10, pos=v_pos_23} AuxVars[] AssignedVars[d2, pos] 221#[L33, thread1EXIT, L57]true [2023-10-12 17:24:59,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1483381492, now seen corresponding path program 1 times [2023-10-12 17:24:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:59,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172977301] [2023-10-12 17:24:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:59,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:59,455 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 17:24:59,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:24:59,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172977301] [2023-10-12 17:24:59,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172977301] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:24:59,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:24:59,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:24:59,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110187746] [2023-10-12 17:24:59,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:24:59,456 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-10-12 17:24:59,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash 4473, now seen corresponding path program 2 times [2023-10-12 17:24:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:59,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936036338] [2023-10-12 17:24:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:59,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:59,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:59,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:59,481 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:59,481 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:59,481 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:59,481 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:59,481 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:24:59,481 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:59,481 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:59,481 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:59,481 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:24:59,481 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:59,481 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:59,482 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 17:24:59,485 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 17:24:59,486 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 17:24:59,502 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:59,502 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:24:59,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:59,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:59,519 INFO L229 MonitoredProcess]: Starting monitored process 27 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 17:24:59,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-10-12 17:24:59,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:59,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:59,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:59,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:59,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:59,545 INFO L229 MonitoredProcess]: Starting monitored process 28 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 17:24:59,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:59,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:59,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-10-12 17:24:59,589 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:24:59,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:59,607 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:59,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:59,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:59,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:59,607 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:24:59,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:59,607 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:59,607 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:59,607 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:24:59,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:59,607 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:59,608 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 17:24:59,612 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 17:24:59,614 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:59,633 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:59,633 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:24:59,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:59,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:59,647 INFO L229 MonitoredProcess]: Starting monitored process 29 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 17:24:59,650 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 17:24:59,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:59,655 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:59,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:59,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:59,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:59,659 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:59,659 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:59,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-10-12 17:24:59,677 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:24:59,679 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:24:59,679 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:24:59,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:59,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:59,681 INFO L229 MonitoredProcess]: Starting monitored process 30 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 17:24:59,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-10-12 17:24:59,705 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:24:59,706 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:24:59,706 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:24:59,706 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(ite d2 1 0)_4) = -2*v_rep(ite d2 1 0)_4 + 1 Supporting invariants [] [2023-10-12 17:24:59,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:59,717 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:24:59,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:59,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:24:59,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:59,742 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:24:59,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:59,750 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 17:24:59,751 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 17:24:59,751 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:24:59,815 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 396 transitions. [2023-10-12 17:24:59,815 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:24:59,983 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:24:59,984 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 17:24:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:24:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2023-10-12 17:24:59,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 6 letters. Loop has 2 letters. [2023-10-12 17:24:59,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:59,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 8 letters. Loop has 2 letters. [2023-10-12 17:24:59,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:59,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 6 letters. Loop has 4 letters. [2023-10-12 17:24:59,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:59,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 29556 transitions, 435708 flow [2023-10-12 17:25:03,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-10-12 17:25:56,436 INFO L124 PetriNetUnfolderBase]: 11152/15765 cut-off events. [2023-10-12 17:25:56,436 INFO L125 PetriNetUnfolderBase]: For 2698/2698 co-relation queries the response was YES. [2023-10-12 17:25:56,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114193 conditions, 15765 events. 11152/15765 cut-off events. For 2698/2698 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 87651 event pairs, 26 based on Foata normal form. 0/8507 useless extension candidates. Maximal degree in co-relation 99169. Up to 11534 conditions per place. [2023-10-12 17:25:56,446 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 81 places, 29556 transitions, 435708 flow [2023-10-12 17:25:56,816 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 81 places, 29556 transitions, 435708 flow [2023-10-12 17:25:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:25:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:25:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:25:56,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 29556 transitions, 435708 flow. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 17:25:56,817 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:25:56,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:26:55,477 INFO L124 PetriNetUnfolderBase]: 8071/12158 cut-off events. [2023-10-12 17:26:55,477 INFO L125 PetriNetUnfolderBase]: For 1668/1668 co-relation queries the response was YES. [2023-10-12 17:26:55,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99582 conditions, 12158 events. 8071/12158 cut-off events. For 1668/1668 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 74234 event pairs, 12 based on Foata normal form. 0/6980 useless extension candidates. Maximal degree in co-relation 89166. Up to 9149 conditions per place. [2023-10-12 17:26:55,548 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 3010 selfloop transitions, 1318 changer transitions 1623/5951 dead transitions. [2023-10-12 17:26:55,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 5951 transitions, 98714 flow [2023-10-12 17:26:55,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 5951 transitions, 98714 flow [2023-10-12 17:27:01,361 INFO L124 PetriNetUnfolderBase]: 8071/12158 cut-off events. [2023-10-12 17:27:01,362 INFO L125 PetriNetUnfolderBase]: For 1668/1668 co-relation queries the response was YES. [2023-10-12 17:27:01,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99582 conditions, 12158 events. 8071/12158 cut-off events. For 1668/1668 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 74331 event pairs, 12 based on Foata normal form. 0/6980 useless extension candidates. Maximal degree in co-relation 89166. Up to 9149 conditions per place. [2023-10-12 17:27:01,370 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 81 places, 5951 transitions, 98714 flow [2023-10-12 17:27:01,441 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 81 places, 5951 transitions, 98714 flow [2023-10-12 17:27:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:27:01,442 INFO L430 stractBuchiCegarLoop]: Abstraction has has 81 places, 5951 transitions, 98714 flow [2023-10-12 17:27:01,442 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:27:01,442 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 81 places, 5951 transitions, 98714 flow [2023-10-12 17:27:01,824 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:27:01,824 INFO L124 PetriNetUnfolderBase]: 443/736 cut-off events. [2023-10-12 17:27:01,824 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2023-10-12 17:27:01,824 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:27:01,824 INFO L748 eck$LassoCheckResult]: Stem: 41#[$Ultimate##0]true [64] $Ultimate##0-->L56: Formula: (and (or (and v_d2_5 v_d1_5) (and (not v_d2_5) (not v_d1_5))) v_d1_5 (= v_pos_9 0) v_v_assert_5) InVars {pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} OutVars{pos=v_pos_9, d2=v_d2_5, v_assert=v_v_assert_5, d1=v_d1_5} AuxVars[] AssignedVars[] 43#[L56]true [96] L56-->L17: Formula: (= 1 v_thread1Thread1of1ForFork2_thidvar0_2) InVars {} OutVars{thread1Thread1of1ForFork2_thidvar0=v_thread1Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_thidvar0] 45#[L17, L56-1]true [90] L56-1-->L33: Formula: (and (= 2 v_thread2Thread1of1ForFork0_thidvar0_2) (= 2 v_thread2Thread1of1ForFork0_thidvar1_2)) InVars {} OutVars{thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_2, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_thidvar1, thread2Thread1of1ForFork0_thidvar0] 104#[L33, L17, L57]true [109] L33-->L35: Formula: (and v_d2_14 v_v_assert_35) InVars {d2=v_d2_14, v_assert=v_v_assert_35} OutVars{d2=v_d2_14, v_assert=v_v_assert_35} AuxVars[] AssignedVars[] 289#[L35, L17, L57]true [101] L35-->L33: Formula: (and (or (and v_d2_7 (not v_d2_6)) (and (not v_d2_7) v_d2_6)) (= (+ 2 v_pos_16) v_pos_15)) InVars {d2=v_d2_7, pos=v_pos_16} OutVars{d2=v_d2_6, pos=v_pos_15} AuxVars[] AssignedVars[d2, pos] 104#[L33, L17, L57]true [109] L33-->L35: Formula: (and v_d2_14 v_v_assert_35) InVars {d2=v_d2_14, v_assert=v_v_assert_35} OutVars{d2=v_d2_14, v_assert=v_v_assert_35} AuxVars[] AssignedVars[] 289#[L35, L17, L57]true [101] L35-->L33: Formula: (and (or (and v_d2_7 (not v_d2_6)) (and (not v_d2_7) v_d2_6)) (= (+ 2 v_pos_16) v_pos_15)) InVars {d2=v_d2_7, pos=v_pos_16} OutVars{d2=v_d2_6, pos=v_pos_15} AuxVars[] AssignedVars[d2, pos] 104#[L33, L17, L57]true [2023-10-12 17:27:01,824 INFO L750 eck$LassoCheckResult]: Loop: 104#[L33, L17, L57]true [110] L33-->L39: Formula: (and (not v_d2_16) v_v_assert_37) InVars {d2=v_d2_16, v_assert=v_v_assert_37} OutVars{d2=v_d2_16, v_assert=v_v_assert_37} AuxVars[] AssignedVars[] 107#[L39, L17, L57]true [102] L39-->L33: Formula: (and (= (+ 2 v_pos_23) v_pos_24) (or (and (not v_d2_11) v_d2_10) (and (not v_d2_10) v_d2_11))) InVars {d2=v_d2_11, pos=v_pos_24} OutVars{d2=v_d2_10, pos=v_pos_23} AuxVars[] AssignedVars[d2, pos] 104#[L33, L17, L57]true [2023-10-12 17:27:01,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:27:01,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1248366921, now seen corresponding path program 1 times [2023-10-12 17:27:01,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:27:01,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137064333] [2023-10-12 17:27:01,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:27:01,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:27:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:27:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:27:01,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:27:01,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137064333] [2023-10-12 17:27:01,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137064333] provided 0 perfect and 1 imperfect interpolant sequences [2023-10-12 17:27:01,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488558300] [2023-10-12 17:27:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:27:01,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-10-12 17:27:01,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:27:01,852 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-10-12 17:27:01,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-10-12 17:27:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:27:01,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-10-12 17:27:01,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:27:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:27:01,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-10-12 17:27:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488558300] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:27:01,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-10-12 17:27:01,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 4 [2023-10-12 17:27:01,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767735061] [2023-10-12 17:27:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:27:01,888 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-10-12 17:27:01,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:27:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash 4473, now seen corresponding path program 3 times [2023-10-12 17:27:01,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:27:01,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176841883] [2023-10-12 17:27:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:27:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:27:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:27:01,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:27:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:27:01,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:27:01,912 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:27:01,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:27:01,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:27:01,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:27:01,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:27:01,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:27:01,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:27:01,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:27:01,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:27:01,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:27:01,912 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:27:01,912 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 17:27:01,915 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 17:27:01,917 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 17:27:01,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:27:01,933 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:27:01,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:27:01,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:27:01,951 INFO L229 MonitoredProcess]: Starting monitored process 32 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 17:27:01,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-10-12 17:27:01,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:27:01,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:27:01,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-10-12 17:27:01,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:27:01,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:27:01,980 INFO L229 MonitoredProcess]: Starting monitored process 33 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 17:27:01,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-10-12 17:27:01,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:27:01,984 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:27:02,005 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:27:02,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-10-12 17:27:02,011 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:27:02,011 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:27:02,011 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:27:02,011 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:27:02,011 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:27:02,011 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:27:02,012 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:27:02,012 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:27:02,012 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-4.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:27:02,012 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:27:02,012 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:27:02,012 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 17:27:02,016 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 17:27:02,018 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 17:27:02,035 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:27:02,035 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:27:02,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:27:02,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:27:02,036 INFO L229 MonitoredProcess]: Starting monitored process 34 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 17:27:02,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-10-12 17:27:02,039 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 17:27:02,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:27:02,046 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:27:02,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:27:02,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:27:02,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:27:02,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:27:02,047 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:27:02,061 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:27:02,063 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:27:02,063 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:27:02,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:27:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:27:02,065 INFO L229 MonitoredProcess]: Starting monitored process 35 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 17:27:02,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-10-12 17:27:02,067 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:27:02,067 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:27:02,067 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:27:02,067 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(ite d2 1 0)_6) = -2*v_rep(ite d2 1 0)_6 + 1 Supporting invariants [] [2023-10-12 17:27:02,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-10-12 17:27:02,074 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:27:02,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:27:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:27:02,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:27:02,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:27:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:27:02,098 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:27:02,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:27:02,107 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 17:27:02,107 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 17:27:02,108 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:27:02,184 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 396 transitions. [2023-10-12 17:27:02,184 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:27:02,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-10-12 17:27:03,278 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:27:03,278 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 17:27:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:27:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2023-10-12 17:27:03,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:27:03,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:27:03,280 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-10-12 17:27:03,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:27:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:27:03,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:27:03,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:27:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:27:03,311 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:27:03,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:27:03,320 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 17:27:03,320 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-10-12 17:27:03,320 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:27:03,391 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 398 transitions. [2023-10-12 17:27:03,391 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:27:04,415 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:27:04,415 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 17:27:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:27:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2023-10-12 17:27:04,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 224 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:27:04,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:27:04,417 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-10-12 17:27:04,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:27:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:27:04,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:27:04,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:27:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:27:04,438 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:27:04,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:27:04,446 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 17:27:04,446 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-10-12 17:27:04,446 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:27:04,518 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 621 transitions. [2023-10-12 17:27:04,518 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:27:06,103 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:27:06,104 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 17:27:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:27:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2023-10-12 17:27:06,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 225 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:27:06,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:27:06,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 225 transitions. Stem has 9 letters. Loop has 2 letters. [2023-10-12 17:27:06,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:27:06,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 225 transitions. Stem has 7 letters. Loop has 4 letters. [2023-10-12 17:27:06,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:27:06,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 161456 transitions, 3004152 flow Received shutdown request... [2023-10-12 17:29:22,771 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 17:29:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:29:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:29:22,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:29:22,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 161456 transitions, 3004152 flow. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 17:29:22,772 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:29:22,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:29:22,784 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 17:29:22,784 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-10-12 17:29:22,938 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 17:29:22,940 INFO L158 Benchmark]: Toolchain (without parser) took 274860.59ms. Allocated memory was 186.6MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 136.4MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-10-12 17:29:22,940 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.28ms. Allocated memory is still 186.6MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:29:22,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.03ms. Allocated memory is still 186.6MB. Free memory was 136.4MB in the beginning and 134.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:29:22,941 INFO L158 Benchmark]: Boogie Preprocessor took 12.54ms. Allocated memory is still 186.6MB. Free memory was 134.8MB in the beginning and 133.8MB in the end (delta: 999.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:29:22,941 INFO L158 Benchmark]: RCFGBuilder took 168.53ms. Allocated memory is still 186.6MB. Free memory was 133.8MB in the beginning and 123.8MB in the end (delta: 10.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-10-12 17:29:22,941 INFO L158 Benchmark]: BuchiAutomizer took 274656.22ms. Allocated memory was 186.6MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 123.7MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-10-12 17:29:22,942 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.28ms. Allocated memory is still 186.6MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.03ms. Allocated memory is still 186.6MB. Free memory was 136.4MB in the beginning and 134.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.54ms. Allocated memory is still 186.6MB. Free memory was 134.8MB in the beginning and 133.8MB in the end (delta: 999.7kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 168.53ms. Allocated memory is still 186.6MB. Free memory was 133.8MB in the beginning and 123.8MB in the end (delta: 10.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 274656.22ms. Allocated memory was 186.6MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 123.7MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 1.9GB. 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, 34 PlacesBefore, 26 PlacesAfterwards, 28 TransitionsBefore, 20 TransitionsAfterwards, 264 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 291, independent: 269, independent conditional: 0, independent unconditional: 269, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 208, independent: 189, independent conditional: 0, independent unconditional: 189, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 208, independent: 177, independent conditional: 0, independent unconditional: 177, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 57, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 291, independent: 80, independent conditional: 0, independent unconditional: 80, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 208, unknown conditional: 0, unknown unconditional: 208] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, 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 17:29:22,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0