/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/mult-dist.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:22:02,722 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:22:02,785 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 17:22:02,807 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:22:02,808 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:22:02,809 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:22:02,810 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:22:02,810 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:22:02,810 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:22:02,813 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:22:02,813 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:22:02,814 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:22:02,814 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:22:02,815 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:22:02,815 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:22:02,815 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:22:02,815 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:22:02,816 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:22:02,816 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:22:02,816 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:22:02,816 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:22:02,816 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:22:02,817 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:22:02,817 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:22:02,817 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:22:02,817 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:22:02,817 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:22:02,817 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:22:02,818 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:22:02,818 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:22:02,818 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:22:02,819 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:22:02,819 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:22:02,820 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:22:02,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:22:02,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:22:03,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:22:03,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:22:03,012 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:22:03,013 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:22:03,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl [2023-10-12 17:22:03,014 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl' [2023-10-12 17:22:03,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:22:03,038 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:22:03,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:03,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:22:03,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:22:03,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,057 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:22:03,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:03,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:22:03,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:22:03,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:22:03,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:22:03,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:22:03,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:22:03,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:22:03,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/1) ... [2023-10-12 17:22:03,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:03,105 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 17:22:03,115 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 17:22:03,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:22:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:22:03,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:22:03,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:22:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:22:03,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:22:03,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:22:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:22:03,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:22:03,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:22:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:22:03,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:22:03,139 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 17:22:03,176 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:22:03,178 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:22:03,246 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:22:03,257 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:22:03,258 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:22:03,259 INFO L201 PluginConnector]: Adding new model mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:03 BoogieIcfgContainer [2023-10-12 17:22:03,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:22:03,260 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:22:03,260 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:22:03,263 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:22:03,263 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:03,263 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:03" (1/2) ... [2023-10-12 17:22:03,264 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ad33f6e and model type mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:22:03, skipping insertion in model container [2023-10-12 17:22:03,264 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:03,264 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:03" (2/2) ... [2023-10-12 17:22:03,265 INFO L332 chiAutomizerObserver]: Analyzing ICFG mult-dist.wvr.bpl [2023-10-12 17:22:03,314 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-10-12 17:22:03,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:22:03,351 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:22:03,351 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:22:03,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2023-10-12 17:22:03,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:22:03,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2023-10-12 17:22:03,381 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:22:03,408 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:22:03,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:22:03,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 23 transitions, 64 flow [2023-10-12 17:22:03,415 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:22:03,416 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:22:03,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2023-10-12 17:22:03,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-10-12 17:22:03,587 INFO L134 LiptonReduction]: Checked pairs total: 106 [2023-10-12 17:22:03,587 INFO L136 LiptonReduction]: Total number of compositions: 9 [2023-10-12 17:22:03,597 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:22:03,597 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:22:03,597 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:22:03,597 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:22:03,598 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:22:03,598 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:22:03,598 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:22:03,598 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:22:03,599 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 places, 15 transitions, 48 flow [2023-10-12 17:22:03,604 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:03,604 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:22:03,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:03,606 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:03,609 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:22:03,609 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 places, 15 transitions, 48 flow [2023-10-12 17:22:03,610 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:03,611 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:22:03,611 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:03,611 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:03,616 INFO L748 eck$LassoCheckResult]: Stem: 37#[$Ultimate##0]true [54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (<= 0 v_b_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3) (<= 0 v_a_3) (<= 0 v_c_3)) InVars {x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} OutVars{x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} AuxVars[] AssignedVars[] 39#[L56]true [75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 41#[L23-1, L56-1]true [2023-10-12 17:22:03,616 INFO L750 eck$LassoCheckResult]: Loop: 41#[L23-1, L56-1]true [90] L23-1-->L23-1: Formula: (and (= v_i_1_12 (+ v_i_1_13 1)) (< v_i_1_13 v_a_8) (= (+ v_c_13 v_x_1_14) v_x_1_13)) InVars {x_1=v_x_1_14, a=v_a_8, i_1=v_i_1_13, c=v_c_13} OutVars{x_1=v_x_1_13, a=v_a_8, i_1=v_i_1_12, c=v_c_13} AuxVars[] AssignedVars[x_1, i_1] 41#[L23-1, L56-1]true [2023-10-12 17:22:03,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2710, now seen corresponding path program 1 times [2023-10-12 17:22:03,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:03,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812317272] [2023-10-12 17:22:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:03,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:03,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash 121, now seen corresponding path program 1 times [2023-10-12 17:22:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:03,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417769079] [2023-10-12 17:22:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:03,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:03,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:03,725 INFO L85 PathProgramCache]: Analyzing trace with hash 84100, now seen corresponding path program 1 times [2023-10-12 17:22:03,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:03,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759269064] [2023-10-12 17:22:03,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:03,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:03,783 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:03,784 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:03,784 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:03,784 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:03,784 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:03,784 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,784 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:03,784 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:03,784 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:22:03,784 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:03,785 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:03,802 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 17:22:03,813 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 17:22:03,855 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:03,855 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:03,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:03,859 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 17:22:03,861 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 17:22:03,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:03,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:03,884 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:22:03,884 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x_1=0, c=0} Honda state: {x_1=0, c=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:22:03,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:03,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:03,890 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 17:22:03,891 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 17:22:03,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:03,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:03,914 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 17:22:03,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:03,915 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 17:22:03,916 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 17:22:03,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:03,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:04,026 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:04,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-10-12 17:22:04,032 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:04,032 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:04,032 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:04,032 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:04,032 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:04,032 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,032 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:04,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:04,032 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:22:04,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:04,033 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:04,034 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 17:22:04,044 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 17:22:04,069 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:04,072 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:04,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,074 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 17:22:04,089 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 17:22:04,092 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 17:22:04,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:04,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:04,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:04,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:04,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:04,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:04,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:04,116 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:22:04,121 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 17:22:04,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,123 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 17:22:04,125 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 17:22:04,126 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 17:22:04,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:04,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:04,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:04,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:04,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:04,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:04,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:04,155 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:04,158 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:22:04,159 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:22:04,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,161 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 17:22:04,162 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 17:22:04,209 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:04,211 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:22:04,212 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:04,212 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(a, i_1) = 1*a - 1*i_1 Supporting invariants [] [2023-10-12 17:22:04,220 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 17:22:04,223 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:22:04,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:04,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:22:04,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:04,265 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:22:04,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:04,267 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 17:22:04,299 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:22:04,300 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:22:04,370 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 5 states and 220 transitions. [2023-10-12 17:22:04,371 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:04,373 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:04,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:22:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:22:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2023-10-12 17:22:04,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 152 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:22:04,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:04,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 152 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:22:04,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:04,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 152 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:22:04,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:04,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:04,408 INFO L124 PetriNetUnfolderBase]: 135/207 cut-off events. [2023-10-12 17:22:04,408 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-10-12 17:22:04,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 207 events. 135/207 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 564 event pairs, 18 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 344. Up to 71 conditions per place. [2023-10-12 17:22:04,409 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:04,413 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:04,413 INFO L430 stractBuchiCegarLoop]: Abstraction has has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:04,414 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:22:04,414 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:04,420 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:04,420 INFO L124 PetriNetUnfolderBase]: 26/40 cut-off events. [2023-10-12 17:22:04,420 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-10-12 17:22:04,420 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:04,421 INFO L748 eck$LassoCheckResult]: Stem: 37#[$Ultimate##0]true [54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (<= 0 v_b_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3) (<= 0 v_a_3) (<= 0 v_c_3)) InVars {x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} OutVars{x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} AuxVars[] AssignedVars[] 39#[L56]true [75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 41#[L23-1, L56-1]true [78] L56-1-->L34-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 86#[L23-1, L34-1, L57]true [2023-10-12 17:22:04,421 INFO L750 eck$LassoCheckResult]: Loop: 86#[L23-1, L34-1, L57]true [88] L34-1-->L34-1: Formula: (and (= (+ v_i_2_13 1) v_i_2_12) (= (+ v_c_11 v_x_2_14) v_x_2_13) (< v_i_2_13 v_b_8)) InVars {x_2=v_x_2_14, i_2=v_i_2_13, c=v_c_11, b=v_b_8} OutVars{x_2=v_x_2_13, i_2=v_i_2_12, c=v_c_11, b=v_b_8} AuxVars[] AssignedVars[x_2, i_2] 86#[L23-1, L34-1, L57]true [88] L34-1-->L34-1: Formula: (and (= (+ v_i_2_13 1) v_i_2_12) (= (+ v_c_11 v_x_2_14) v_x_2_13) (< v_i_2_13 v_b_8)) InVars {x_2=v_x_2_14, i_2=v_i_2_13, c=v_c_11, b=v_b_8} OutVars{x_2=v_x_2_13, i_2=v_i_2_12, c=v_c_11, b=v_b_8} AuxVars[] AssignedVars[x_2, i_2] 86#[L23-1, L34-1, L57]true [2023-10-12 17:22:04,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash 84088, now seen corresponding path program 1 times [2023-10-12 17:22:04,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:04,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588125590] [2023-10-12 17:22:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:04,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:04,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:04,431 INFO L85 PathProgramCache]: Analyzing trace with hash 3777, now seen corresponding path program 1 times [2023-10-12 17:22:04,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:04,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779858274] [2023-10-12 17:22:04,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:04,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,436 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:04,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash 80811384, now seen corresponding path program 1 times [2023-10-12 17:22:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:04,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218990088] [2023-10-12 17:22:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:04,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:04,512 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:04,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:04,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:04,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:04,512 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:04,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:04,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:04,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:22:04,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:04,512 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:04,513 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 17:22:04,520 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:22:04,543 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:04,544 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:04,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,545 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 17:22:04,547 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 17:22:04,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:04,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:04,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-10-12 17:22:04,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,589 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 17:22:04,592 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 17:22:04,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:04,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:04,831 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:04,835 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 17:22:04,835 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:04,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:04,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:04,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:04,835 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:04,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,835 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:04,835 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:04,835 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:22:04,835 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:04,836 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:04,836 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 17:22:04,850 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 17:22:04,869 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:04,869 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:04,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,871 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 17:22:04,876 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 17:22:04,876 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 17:22:04,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:04,883 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:04,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:04,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:04,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:04,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:04,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:04,890 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:04,893 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:22:04,893 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:22:04,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,907 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 17:22:04,908 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 17:22:04,909 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:04,909 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:22:04,909 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:04,909 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(b, i_2) = 1*b - 1*i_2 Supporting invariants [] [2023-10-12 17:22:04,926 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 17:22:04,927 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:22:04,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:04,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:22:04,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:04,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:22:04,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:22:04,979 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 17:22:04,979 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 17:22:05,108 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 7 states and 290 transitions. [2023-10-12 17:22:05,108 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:05,123 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:05,126 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 17:22:05,127 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 17:22:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2023-10-12 17:22:05,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:22:05,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:05,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:22:05,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:05,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:22:05,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:05,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 2608 transitions, 19104 flow [2023-10-12 17:22:05,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:05,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:05,245 INFO L124 PetriNetUnfolderBase]: 383/568 cut-off events. [2023-10-12 17:22:05,245 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-10-12 17:22:05,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 568 events. 383/568 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2036 event pairs, 23 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 1278. Up to 202 conditions per place. [2023-10-12 17:22:05,247 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 46 places, 2608 transitions, 19104 flow [2023-10-12 17:22:05,274 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 46 places, 2608 transitions, 19104 flow [2023-10-12 17:22:05,275 INFO L430 stractBuchiCegarLoop]: Abstraction has has 46 places, 2608 transitions, 19104 flow [2023-10-12 17:22:05,275 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:22:05,275 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 46 places, 2608 transitions, 19104 flow [2023-10-12 17:22:05,315 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:05,315 INFO L124 PetriNetUnfolderBase]: 154/220 cut-off events. [2023-10-12 17:22:05,315 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-10-12 17:22:05,315 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:05,316 INFO L748 eck$LassoCheckResult]: Stem: 37#[$Ultimate##0]true [54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (<= 0 v_b_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3) (<= 0 v_a_3) (<= 0 v_c_3)) InVars {x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} OutVars{x_1=v_x_1_3, a=v_a_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, c=v_c_3, b=v_b_3} AuxVars[] AssignedVars[] 39#[L56]true [75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 41#[L23-1, L56-1]true [78] L56-1-->L34-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 86#[L23-1, L34-1, L57]true [90] L23-1-->L23-1: Formula: (and (= v_i_1_12 (+ v_i_1_13 1)) (< v_i_1_13 v_a_8) (= (+ v_c_13 v_x_1_14) v_x_1_13)) InVars {x_1=v_x_1_14, a=v_a_8, i_1=v_i_1_13, c=v_c_13} OutVars{x_1=v_x_1_13, a=v_a_8, i_1=v_i_1_12, c=v_c_13} AuxVars[] AssignedVars[x_1, i_1] 86#[L23-1, L34-1, L57]true [81] L57-->L45-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 141#[L23-1, L34-1, L45-1, L58]true [89] L23-1-->thread1EXIT: Formula: (<= v_a_6 v_i_1_10) InVars {a=v_a_6, i_1=v_i_1_10} OutVars{a=v_a_6, i_1=v_i_1_10} AuxVars[] AssignedVars[] 143#[L34-1, L45-1, L58, thread1EXIT]true [92] L45-1-->L45-1: Formula: (and (< v_i_3_13 (+ v_a_12 v_b_12)) (= (+ v_c_15 v_x_3_14) v_x_3_13) (= (+ v_i_3_13 1) v_i_3_12)) InVars {a=v_a_12, x_3=v_x_3_14, i_3=v_i_3_13, c=v_c_15, b=v_b_12} OutVars{a=v_a_12, x_3=v_x_3_13, i_3=v_i_3_12, c=v_c_15, b=v_b_12} AuxVars[] AssignedVars[x_3, i_3] 143#[L34-1, L45-1, L58, thread1EXIT]true [2023-10-12 17:22:05,316 INFO L750 eck$LassoCheckResult]: Loop: 143#[L34-1, L45-1, L58, thread1EXIT]true [92] L45-1-->L45-1: Formula: (and (< v_i_3_13 (+ v_a_12 v_b_12)) (= (+ v_c_15 v_x_3_14) v_x_3_13) (= (+ v_i_3_13 1) v_i_3_12)) InVars {a=v_a_12, x_3=v_x_3_14, i_3=v_i_3_13, c=v_c_15, b=v_b_12} OutVars{a=v_a_12, x_3=v_x_3_13, i_3=v_i_3_12, c=v_c_15, b=v_b_12} AuxVars[] AssignedVars[x_3, i_3] 143#[L34-1, L45-1, L58, thread1EXIT]true [92] L45-1-->L45-1: Formula: (and (< v_i_3_13 (+ v_a_12 v_b_12)) (= (+ v_c_15 v_x_3_14) v_x_3_13) (= (+ v_i_3_13 1) v_i_3_12)) InVars {a=v_a_12, x_3=v_x_3_14, i_3=v_i_3_13, c=v_c_15, b=v_b_12} OutVars{a=v_a_12, x_3=v_x_3_13, i_3=v_i_3_12, c=v_c_15, b=v_b_12} AuxVars[] AssignedVars[x_3, i_3] 143#[L34-1, L45-1, L58, thread1EXIT]true [2023-10-12 17:22:05,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:05,316 INFO L85 PathProgramCache]: Analyzing trace with hash 350384402, now seen corresponding path program 1 times [2023-10-12 17:22:05,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:05,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973047435] [2023-10-12 17:22:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:05,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:05,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:05,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:05,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:05,343 INFO L85 PathProgramCache]: Analyzing trace with hash 3905, now seen corresponding path program 1 times [2023-10-12 17:22:05,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:05,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257400889] [2023-10-12 17:22:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:05,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:05,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:05,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:05,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1711964178, now seen corresponding path program 2 times [2023-10-12 17:22:05,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:05,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904869934] [2023-10-12 17:22:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:05,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:05,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:05,427 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:05,428 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:05,428 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:05,428 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:05,428 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:05,428 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:05,428 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:05,428 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:05,428 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:22:05,428 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:05,428 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:05,430 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 17:22:05,434 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 17:22:05,450 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:05,450 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:05,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:05,451 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 17:22:05,453 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 17:22:05,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:05,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:05,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-10-12 17:22:05,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:05,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:05,499 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 17:22:05,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:05,506 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:05,529 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 17:22:07,110 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:07,116 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 17:22:07,116 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:07,116 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:07,116 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:07,116 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:07,116 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:07,116 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:07,116 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:07,116 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:07,116 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-dist.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:22:07,116 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:07,116 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:07,117 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 17:22:07,131 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 17:22:07,154 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:07,154 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:07,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:07,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:07,157 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 17:22:07,174 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 17:22:07,175 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 17:22:07,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:07,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:07,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:07,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:07,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:07,182 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:07,182 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:07,192 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:07,196 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:22:07,196 INFO L444 ModelExtractionUtils]: 0 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:22:07,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:07,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:07,202 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 17:22:07,203 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 17:22:07,206 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:07,206 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:22:07,206 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:07,206 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(b, i_3, a) = 1*b - 1*i_3 + 1*a Supporting invariants [] [2023-10-12 17:22:07,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-10-12 17:22:07,209 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:22:07,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:07,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:22:07,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:07,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:22:07,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:22:07,252 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 17:22:07,252 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:22:07,355 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 7 states and 290 transitions. [2023-10-12 17:22:07,356 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:07,701 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:07,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:07,702 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 17:22:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:22:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2023-10-12 17:22:07,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:22:07,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:07,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 9 letters. Loop has 2 letters. [2023-10-12 17:22:07,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:07,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 7 letters. Loop has 4 letters. [2023-10-12 17:22:07,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:07,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 39760 transitions, 373376 flow [2023-10-12 17:22:10,098 INFO L124 PetriNetUnfolderBase]: 1183/1751 cut-off events. [2023-10-12 17:22:10,099 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2023-10-12 17:22:10,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 1751 events. 1183/1751 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8121 event pairs, 39 based on Foata normal form. 0/972 useless extension candidates. Maximal degree in co-relation 4328. Up to 644 conditions per place. [2023-10-12 17:22:10,101 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 60 places, 39760 transitions, 373376 flow [2023-10-12 17:22:10,476 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 60 places, 39760 transitions, 373376 flow [2023-10-12 17:22:10,476 INFO L430 stractBuchiCegarLoop]: Abstraction has has 60 places, 39760 transitions, 373376 flow [2023-10-12 17:22:10,476 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:22:10,476 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 60 places, 39760 transitions, 373376 flow [2023-10-12 17:22:13,715 INFO L124 PetriNetUnfolderBase]: 1183/1751 cut-off events. [2023-10-12 17:22:13,716 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2023-10-12 17:22:13,716 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is empty [2023-10-12 17:22:13,720 INFO L201 PluginConnector]: Adding new model mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:22:13 BoogieIcfgContainer [2023-10-12 17:22:13,721 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:22:13,721 INFO L158 Benchmark]: Toolchain (without parser) took 10683.40ms. Allocated memory was 186.6MB in the beginning and 489.7MB in the end (delta: 303.0MB). Free memory was 140.9MB in the beginning and 316.4MB in the end (delta: -175.5MB). Peak memory consumption was 291.6MB. Max. memory is 8.0GB. [2023-10-12 17:22:13,722 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.23ms. Allocated memory is still 186.6MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:22:13,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.24ms. Allocated memory is still 186.6MB. Free memory was 140.7MB in the beginning and 139.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:13,722 INFO L158 Benchmark]: Boogie Preprocessor took 18.20ms. Allocated memory is still 186.6MB. Free memory was 139.3MB in the beginning and 138.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:13,722 INFO L158 Benchmark]: RCFGBuilder took 181.43ms. Allocated memory is still 186.6MB. Free memory was 138.0MB in the beginning and 127.9MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-10-12 17:22:13,723 INFO L158 Benchmark]: BuchiAutomizer took 10460.74ms. Allocated memory was 186.6MB in the beginning and 489.7MB in the end (delta: 303.0MB). Free memory was 127.9MB in the beginning and 316.4MB in the end (delta: -188.6MB). Peak memory consumption was 279.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:13,725 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 0.23ms. Allocated memory is still 186.6MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.24ms. Allocated memory is still 186.6MB. Free memory was 140.7MB in the beginning and 139.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.20ms. Allocated memory is still 186.6MB. Free memory was 139.3MB in the beginning and 138.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 181.43ms. Allocated memory is still 186.6MB. Free memory was 138.0MB in the beginning and 127.9MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 10460.74ms. Allocated memory was 186.6MB in the beginning and 489.7MB in the end (delta: 303.0MB). Free memory was 127.9MB in the beginning and 316.4MB in the end (delta: -188.6MB). Peak memory consumption was 279.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function a + -1 * i_1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i_2 + b and consists of 5 locations. One deterministic module has affine ranking function -1 * i_3 + b + a and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.3s and 4 iterations. TraceHistogramMax:0. Analysis of lassos took 3.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 266 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 263 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 297 IncrementalHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 123 mSDtfsCounter, 297 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s InitialAbstractionConstructionTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 30 PlacesBefore, 22 PlacesAfterwards, 23 TransitionsBefore, 15 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 106, independent: 106, independent conditional: 0, independent unconditional: 106, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 82, independent: 82, independent conditional: 0, independent unconditional: 82, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 82, independent: 82, independent conditional: 0, independent unconditional: 82, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 106, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 82, unknown conditional: 0, unknown unconditional: 82] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:22:13,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...