/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-comm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:22:02,429 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:22:02,501 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 17:22:02,534 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:22:02,535 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:22:02,535 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:22:02,536 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:22:02,537 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:22:02,537 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:22:02,542 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:22:02,543 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:22:02,543 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:22:02,543 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:22:02,545 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:22:02,545 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:22:02,545 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:22:02,545 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:22:02,546 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:22:02,546 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:22:02,547 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:22:02,548 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:22:02,548 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:22:02,548 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:22:02,548 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:22:02,549 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:22:02,549 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:22:02,549 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:22:02,549 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:22:02,549 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:22:02,550 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:22:02,551 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:22:02,551 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:22:02,551 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:22:02,553 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:22:02,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:22:02,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:22:02,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:22:02,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:22:02,829 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:22:02,830 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:22:02,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl [2023-10-12 17:22:02,831 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl' [2023-10-12 17:22:02,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:22:02,858 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:22:02,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:02,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:22:02,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:22:02,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,880 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:22:02,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:02,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:22:02,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:22:02,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:22:02,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:22:02,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:22:02,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:22:02,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:22:02,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/1) ... [2023-10-12 17:22:02,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:02,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:02,930 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 17:22:02,941 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 17:22:02,968 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:22:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:22:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:22:02,969 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:22:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:22:02,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:22:02,969 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:22:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:22:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:22:02,971 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 17:22:03,015 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:22:03,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:22:03,129 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:22:03,140 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:22:03,141 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:22:03,142 INFO L201 PluginConnector]: Adding new model mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:03 BoogieIcfgContainer [2023-10-12 17:22:03,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:22:03,144 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:22:03,144 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:22:03,147 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:22:03,148 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:03,148 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:02" (1/2) ... [2023-10-12 17:22:03,149 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d96d2d0 and model type mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:22:03, skipping insertion in model container [2023-10-12 17:22:03,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:03,149 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:03" (2/2) ... [2023-10-12 17:22:03,150 INFO L332 chiAutomizerObserver]: Analyzing ICFG mult-comm.wvr.bpl [2023-10-12 17:22:03,224 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:22:03,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 21 transitions, 58 flow [2023-10-12 17:22:03,325 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-10-12 17:22:03,326 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:22:03,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:22:03,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 21 transitions, 58 flow [2023-10-12 17:22:03,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2023-10-12 17:22:03,338 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:22:03,351 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 17 transitions, 46 flow [2023-10-12 17:22:03,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 17 transitions, 46 flow [2023-10-12 17:22:03,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 17 transitions, 46 flow [2023-10-12 17:22:03,366 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-10-12 17:22:03,366 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:22:03,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:22:03,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-10-12 17:22:03,489 INFO L134 LiptonReduction]: Checked pairs total: 37 [2023-10-12 17:22:03,489 INFO L136 LiptonReduction]: Total number of compositions: 7 [2023-10-12 17:22:03,500 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:22:03,500 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:22:03,500 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:22:03,500 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:22:03,500 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:22:03,500 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:22:03,500 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:22:03,500 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:22:03,501 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:22:03,504 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:03,504 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:22:03,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:03,504 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:03,507 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:22:03,507 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:22:03,508 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:03,508 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:22:03,509 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:03,509 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:03,512 INFO L748 eck$LassoCheckResult]: Stem: 28#[$Ultimate##0]true [34] $Ultimate##0-->L45: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (= v_i_2_5 v_x_1_3) (<= 0 v_a_4) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3) (<= 0 v_b_4)) InVars {a=v_a_4, x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, b=v_b_4} OutVars{a=v_a_4, x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, b=v_b_4} AuxVars[] AssignedVars[] 30#[L45]true [54] L45-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 32#[L23-1, L45-1]true [2023-10-12 17:22:03,512 INFO L750 eck$LassoCheckResult]: Loop: 32#[L23-1, L45-1]true [64] L23-1-->L23-1: Formula: (and (= v_i_1_12 (+ v_i_1_13 1)) (< v_i_1_13 v_b_11) (= v_x_1_9 (+ v_a_11 v_x_1_10))) InVars {x_1=v_x_1_10, a=v_a_11, i_1=v_i_1_13, b=v_b_11} OutVars{x_1=v_x_1_9, a=v_a_11, i_1=v_i_1_12, b=v_b_11} AuxVars[] AssignedVars[x_1, i_1] 32#[L23-1, L45-1]true [2023-10-12 17:22:03,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2069, now seen corresponding path program 1 times [2023-10-12 17:22:03,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:03,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448383214] [2023-10-12 17:22:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:03,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:03,606 INFO L85 PathProgramCache]: Analyzing trace with hash 95, now seen corresponding path program 1 times [2023-10-12 17:22:03,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:03,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896365715] [2023-10-12 17:22:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:03,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:03,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:03,622 INFO L85 PathProgramCache]: Analyzing trace with hash 64203, now seen corresponding path program 1 times [2023-10-12 17:22:03,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903343723] [2023-10-12 17:22:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:03,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:03,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:03,699 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:03,699 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:03,699 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:03,699 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:03,700 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:03,700 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,700 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:03,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:03,700 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-comm.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:22:03,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:03,700 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:03,713 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 17:22:03,727 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 17:22:03,783 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:03,783 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:03,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:03,789 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 17:22:03,790 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 17:22:03,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:03,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:03,807 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:22:03,807 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {a=0, x_1=0} Honda state: {a=0, x_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:22:03,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-10-12 17:22:03,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:03,814 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 17:22:03,816 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 17:22:03,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:03,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:03,838 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 17:22:03,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:03,840 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 17:22:03,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:03,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:03,852 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 17:22:03,967 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:03,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:03,971 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:03,971 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:03,971 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:03,971 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:03,972 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:03,972 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:03,972 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:03,972 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:03,972 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-comm.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:22:03,972 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:03,972 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:03,973 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 17:22:03,978 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 17:22:04,003 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:04,006 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:04,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,008 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 17:22:04,010 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 17:22:04,013 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:22:04,020 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:04,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:04,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:04,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:04,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:04,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:04,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:04,033 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:22:04,037 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 17:22:04,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,038 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 17:22:04,040 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 17:22:04,042 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 17:22:04,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:04,048 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:04,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:04,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:04,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:04,049 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:04,050 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:04,065 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:04,069 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:22:04,069 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:22:04,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,077 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 17:22:04,088 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:04,088 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:22:04,088 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:04,089 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(b, i_1) = 1*b - 1*i_1 Supporting invariants [] [2023-10-12 17:22:04,096 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 17:22:04,096 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 17:22:04,099 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:22:04,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:04,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:22:04,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:04,158 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:22:04,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:04,159 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 17:22:04,185 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 17:22:04,187 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 17:22:04,284 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 160 transitions. [2023-10-12 17:22:04,285 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:04,287 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:04,289 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 17:22:04,294 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 17:22:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2023-10-12 17:22:04,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:22:04,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:04,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:22:04,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:04,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 112 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:22:04,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:04,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:22:04,322 INFO L124 PetriNetUnfolderBase]: 31/63 cut-off events. [2023-10-12 17:22:04,322 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-10-12 17:22:04,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 63 events. 31/63 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 147 event pairs, 2 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 96. Up to 21 conditions per place. [2023-10-12 17:22:04,324 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:22:04,330 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 26 places, 124 transitions, 640 flow [2023-10-12 17:22:04,330 INFO L430 stractBuchiCegarLoop]: Abstraction has has 26 places, 124 transitions, 640 flow [2023-10-12 17:22:04,330 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:22:04,330 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:22:04,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:04,344 INFO L124 PetriNetUnfolderBase]: 17/30 cut-off events. [2023-10-12 17:22:04,344 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-10-12 17:22:04,344 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:04,345 INFO L748 eck$LassoCheckResult]: Stem: 28#[$Ultimate##0]true [34] $Ultimate##0-->L45: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (= v_i_2_5 v_x_1_3) (<= 0 v_a_4) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3) (<= 0 v_b_4)) InVars {a=v_a_4, x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, b=v_b_4} OutVars{a=v_a_4, x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5, b=v_b_4} AuxVars[] AssignedVars[] 30#[L45]true [54] L45-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 32#[L23-1, L45-1]true [57] L45-1-->L34-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 77#[L23-1, L34-1, L46]true [2023-10-12 17:22:04,345 INFO L750 eck$LassoCheckResult]: Loop: 77#[L23-1, L34-1, L46]true [61] L34-1-->L34-1: Formula: (and (= (+ v_i_2_13 1) v_i_2_12) (= v_x_2_9 (+ v_b_7 v_x_2_10)) (< v_i_2_13 v_a_9)) InVars {a=v_a_9, x_2=v_x_2_10, i_2=v_i_2_13, b=v_b_7} OutVars{a=v_a_9, x_2=v_x_2_9, i_2=v_i_2_12, b=v_b_7} AuxVars[] AssignedVars[x_2, i_2] 77#[L23-1, L34-1, L46]true [61] L34-1-->L34-1: Formula: (and (= (+ v_i_2_13 1) v_i_2_12) (= v_x_2_9 (+ v_b_7 v_x_2_10)) (< v_i_2_13 v_a_9)) InVars {a=v_a_9, x_2=v_x_2_10, i_2=v_i_2_13, b=v_b_7} OutVars{a=v_a_9, x_2=v_x_2_9, i_2=v_i_2_12, b=v_b_7} AuxVars[] AssignedVars[x_2, i_2] 77#[L23-1, L34-1, L46]true [2023-10-12 17:22:04,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash 64196, now seen corresponding path program 1 times [2023-10-12 17:22:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:04,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960492145] [2023-10-12 17:22:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:04,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:04,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:04,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2913, now seen corresponding path program 1 times [2023-10-12 17:22:04,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:04,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800213720] [2023-10-12 17:22:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:04,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:04,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:04,381 INFO L85 PathProgramCache]: Analyzing trace with hash 61694308, now seen corresponding path program 1 times [2023-10-12 17:22:04,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:04,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147991864] [2023-10-12 17:22:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:04,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:04,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:04,451 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:04,451 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:04,451 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:04,451 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:04,451 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:04,452 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,452 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:04,452 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:04,452 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-comm.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:22:04,452 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:04,452 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:04,453 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 17:22:04,456 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 17:22:04,483 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:04,483 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:04,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,485 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 17:22:04,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:04,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:04,512 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 17:22:04,521 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:22:04,521 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x_2=0, b=0} Honda state: {x_2=0, b=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:22:04,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:04,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,529 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 17:22:04,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:04,541 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:04,550 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 17:22:04,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-10-12 17:22:04,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,566 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 17:22:04,584 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 17:22:04,585 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 17:22:04,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:04,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:04,809 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:04,812 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 17:22:04,813 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:04,813 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:04,813 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:04,813 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:04,813 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:04,813 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,813 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:04,813 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:04,813 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-comm.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:22:04,813 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:04,813 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:04,814 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 17:22:04,819 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 17:22:04,864 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:04,864 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:04,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,867 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 17:22:04,878 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 17:22:04,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:04,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:04,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:04,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:04,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:04,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:04,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:04,893 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 17:22:04,901 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:22:04,908 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 17:22:04,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,910 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 17:22:04,914 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 17:22:04,914 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 17:22:04,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:04,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:04,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:04,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:04,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:04,922 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:04,922 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:04,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:04,939 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:22:04,939 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:22:04,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:04,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:04,940 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 17:22:04,942 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 17:22:04,973 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:04,973 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:22:04,973 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:04,974 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(a, i_2) = 1*a - 1*i_2 Supporting invariants [] [2023-10-12 17:22:04,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:04,978 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:22:05,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:05,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:22:05,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:05,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:22:05,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:05,040 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 17:22:05,041 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 17:22:05,041 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 17:22:05,144 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 210 transitions. [2023-10-12 17:22:05,145 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:05,162 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:05,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-10-12 17:22:05,163 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 17:22:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-10-12 17:22:05,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 140 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:22:05,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:05,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 140 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:22:05,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:05,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 140 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:22:05,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:05,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 1840 transitions, 13344 flow [2023-10-12 17:22:05,199 INFO L124 PetriNetUnfolderBase]: 67/136 cut-off events. [2023-10-12 17:22:05,200 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-10-12 17:22:05,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 136 events. 67/136 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 504 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 240. Up to 48 conditions per place. [2023-10-12 17:22:05,200 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 40 places, 1840 transitions, 13344 flow [2023-10-12 17:22:05,226 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 40 places, 1840 transitions, 13344 flow [2023-10-12 17:22:05,226 INFO L430 stractBuchiCegarLoop]: Abstraction has has 40 places, 1840 transitions, 13344 flow [2023-10-12 17:22:05,226 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:22:05,227 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 40 places, 1840 transitions, 13344 flow [2023-10-12 17:22:05,257 INFO L124 PetriNetUnfolderBase]: 67/136 cut-off events. [2023-10-12 17:22:05,257 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-10-12 17:22:05,257 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is empty [2023-10-12 17:22:05,262 INFO L201 PluginConnector]: Adding new model mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:22:05 BoogieIcfgContainer [2023-10-12 17:22:05,263 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:22:05,263 INFO L158 Benchmark]: Toolchain (without parser) took 2404.92ms. Allocated memory was 182.5MB in the beginning and 239.1MB in the end (delta: 56.6MB). Free memory was 136.5MB in the beginning and 171.6MB in the end (delta: -35.1MB). Peak memory consumption was 23.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:05,264 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.25ms. Allocated memory is still 182.5MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:22:05,264 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.85ms. Allocated memory is still 182.5MB. Free memory was 136.4MB in the beginning and 134.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:22:05,264 INFO L158 Benchmark]: Boogie Preprocessor took 18.87ms. Allocated memory is still 182.5MB. Free memory was 134.9MB in the beginning and 133.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:05,265 INFO L158 Benchmark]: RCFGBuilder took 239.99ms. Allocated memory is still 182.5MB. Free memory was 133.8MB in the beginning and 124.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-10-12 17:22:05,265 INFO L158 Benchmark]: BuchiAutomizer took 2119.12ms. Allocated memory was 182.5MB in the beginning and 239.1MB in the end (delta: 56.6MB). Free memory was 124.2MB in the beginning and 171.6MB in the end (delta: -47.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:22:05,267 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 0.25ms. Allocated memory is still 182.5MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.85ms. Allocated memory is still 182.5MB. Free memory was 136.4MB in the beginning and 134.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.87ms. Allocated memory is still 182.5MB. Free memory was 134.9MB in the beginning and 133.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 239.99ms. Allocated memory is still 182.5MB. Free memory was 133.8MB in the beginning and 124.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2119.12ms. Allocated memory was 182.5MB in the beginning and 239.1MB in the end (delta: 56.6MB). Free memory was 124.2MB in the beginning and 171.6MB in the end (delta: -47.4MB). Peak memory consumption was 10.5MB. 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function b + -1 * i_1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i_2 + a and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 115 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 61 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s 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: 0.1s, 22 PlacesBefore, 16 PlacesAfterwards, 17 TransitionsBefore, 11 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, independent: 37, independent conditional: 0, independent unconditional: 37, 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: 28, independent: 28, independent conditional: 0, independent unconditional: 28, 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: 28, independent: 28, independent conditional: 0, independent unconditional: 28, 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: 37, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 28, unknown conditional: 0, unknown unconditional: 28] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, 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 17:22:05,292 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 17:22:05,497 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...