/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-flipped-dist.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:22:09,236 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:22:09,314 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 17:22:09,343 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:22:09,343 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:22:09,344 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:22:09,345 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:22:09,346 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:22:09,346 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:22:09,349 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:22:09,350 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:22:09,350 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:22:09,350 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:22:09,351 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:22:09,352 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:22:09,352 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:22:09,352 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:22:09,353 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:22:09,353 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:22:09,353 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:22:09,353 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:22:09,353 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:22:09,354 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:22:09,355 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:22:09,355 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:22:09,355 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:22:09,355 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:22:09,356 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:22:09,356 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:22:09,356 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:22:09,357 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:22:09,357 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:22:09,357 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:22:09,359 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:22:09,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:22:09,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:22:09,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:22:09,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:22:09,624 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:22:09,625 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:22:09,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl [2023-10-12 17:22:09,627 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-flipped-dist.wvr.bpl' [2023-10-12 17:22:09,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:22:09,655 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:22:09,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:09,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:22:09,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:22:09,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,682 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:22:09,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:22:09,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:22:09,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:22:09,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:22:09,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:22:09,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:22:09,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:22:09,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:22:09,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/1) ... [2023-10-12 17:22:09,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:09,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:09,762 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 17:22:09,784 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 17:22:09,796 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:22:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:22:09,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:22:09,797 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:22:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:22:09,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:22:09,797 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:22:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:22:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:22:09,798 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:22:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:22:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:22:09,799 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 17:22:09,845 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:22:09,847 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:22:09,948 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:22:09,963 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:22:09,963 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:22:09,965 INFO L201 PluginConnector]: Adding new model mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:09 BoogieIcfgContainer [2023-10-12 17:22:09,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:22:09,966 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:22:09,966 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:22:09,969 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:22:09,970 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:09,970 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:22:09" (1/2) ... [2023-10-12 17:22:09,971 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b0ce8b2 and model type mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:22:09, skipping insertion in model container [2023-10-12 17:22:09,972 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:22:09,972 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:22:09" (2/2) ... [2023-10-12 17:22:09,973 INFO L332 chiAutomizerObserver]: Analyzing ICFG mult-flipped-dist.wvr.bpl [2023-10-12 17:22:10,021 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-10-12 17:22:10,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:22:10,069 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:22:10,069 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:22:10,073 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 17:22:10,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 82 flow [2023-10-12 17:22:10,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2023-10-12 17:22:10,079 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:22:10,091 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:22:10,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 23 transitions, 64 flow [2023-10-12 17:22:10,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 23 transitions, 64 flow [2023-10-12 17:22:10,100 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-10-12 17:22:10,101 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-10-12 17:22:10,101 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 17:22:10,102 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-10-12 17:22:10,232 INFO L134 LiptonReduction]: Checked pairs total: 106 [2023-10-12 17:22:10,232 INFO L136 LiptonReduction]: Total number of compositions: 9 [2023-10-12 17:22:10,244 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:22:10,244 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:22:10,244 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:22:10,244 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:22:10,244 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:22:10,244 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:22:10,244 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:22:10,245 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:22:10,245 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 places, 15 transitions, 48 flow [2023-10-12 17:22:10,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:10,249 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:22:10,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:10,249 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:10,252 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:22:10,252 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 places, 15 transitions, 48 flow [2023-10-12 17:22:10,253 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:10,253 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:22:10,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:22:10,253 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:10,257 INFO L748 eck$LassoCheckResult]: Stem: 37#[$Ultimate##0]true [54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3)) InVars {x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} OutVars{x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} AuxVars[] AssignedVars[] 39#[L56]true [75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 41#[L23-1, L56-1]true [2023-10-12 17:22:10,258 INFO L750 eck$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_a_7 v_x_1_14) v_x_1_13) (< v_i_1_13 v_c_13)) InVars {x_1=v_x_1_14, a=v_a_7, i_1=v_i_1_13, c=v_c_13} OutVars{x_1=v_x_1_13, a=v_a_7, 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 17:22:10,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2710, now seen corresponding path program 1 times [2023-10-12 17:22:10,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:10,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597795514] [2023-10-12 17:22:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:10,329 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:10,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:10,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash 121, now seen corresponding path program 1 times [2023-10-12 17:22:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:10,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566321624] [2023-10-12 17:22:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:10,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:10,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:10,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash 84100, now seen corresponding path program 1 times [2023-10-12 17:22:10,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:10,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233704636] [2023-10-12 17:22:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:10,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:10,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:10,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:10,528 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:10,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:10,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:10,529 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:10,530 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:10,530 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:10,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:10,530 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:10,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:22:10,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:10,530 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:10,549 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 17:22:10,563 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 17:22:10,614 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:10,614 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:10,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:10,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:10,617 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 17:22:10,620 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 17:22:10,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:10,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:10,647 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:22:10,647 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 17:22:10,654 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 17:22:10,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:10,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:10,656 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 17:22:10,659 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 17:22:10,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:10,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:10,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-10-12 17:22:10,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:10,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:10,675 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 17:22:10,678 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 17:22:10,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:10,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:10,784 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:10,788 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 17:22:10,788 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:10,788 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:10,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:10,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:10,788 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:10,788 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:10,788 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:10,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:10,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:22:10,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:10,789 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:10,790 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 17:22:10,795 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 17:22:10,822 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:10,826 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:10,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:10,829 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 17:22:10,837 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 17:22:10,843 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 17:22:10,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:10,852 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:10,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:10,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:10,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:10,855 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:10,855 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:10,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:22:10,878 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 17:22:10,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:10,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:10,880 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 17:22:10,882 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 17:22:10,883 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 17:22:10,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:10,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:10,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:10,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:10,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:10,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:10,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:10,907 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:10,910 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:22:10,911 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:22:10,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:10,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:10,914 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 17:22:10,915 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 17:22:11,181 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:11,182 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:22:11,182 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:11,183 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_1, c) = -1*i_1 + 1*c Supporting invariants [] [2023-10-12 17:22:11,202 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 17:22:11,205 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:22:11,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:11,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:22:11,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:11,248 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:22:11,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:11,249 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 17:22:11,275 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 17:22:11,276 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 17:22:11,359 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 17:22:11,361 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:11,363 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:11,367 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 17:22:11,371 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 17:22:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2023-10-12 17:22:11,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 152 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:22:11,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:11,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 152 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:22:11,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:11,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 152 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:22:11,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:11,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:11,407 INFO L124 PetriNetUnfolderBase]: 135/207 cut-off events. [2023-10-12 17:22:11,407 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-10-12 17:22:11,408 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 17:22:11,408 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:11,412 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:11,412 INFO L430 stractBuchiCegarLoop]: Abstraction has has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:11,412 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:22:11,413 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 32 places, 172 transitions, 904 flow [2023-10-12 17:22:11,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:11,421 INFO L124 PetriNetUnfolderBase]: 26/40 cut-off events. [2023-10-12 17:22:11,421 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-10-12 17:22:11,421 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:11,422 INFO L748 eck$LassoCheckResult]: Stem: 37#[$Ultimate##0]true [54] $Ultimate##0-->L56: Formula: (and (= v_x_1_3 0) (= v_x_3_1 v_x_1_3) (= v_i_1_5 v_x_1_3) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3)) InVars {x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} OutVars{x_1=v_x_1_3, x_2=v_x_2_3, x_3=v_x_3_1, i_2=v_i_2_5, i_3=v_i_3_1, i_1=v_i_1_5} AuxVars[] AssignedVars[] 39#[L56]true [75] L56-->L23-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 41#[L23-1, L56-1]true [78] L56-1-->L34-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 86#[L23-1, L34-1, L57]true [2023-10-12 17:22:11,422 INFO L750 eck$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_i_2_13 v_c_9) (= (+ v_b_7 v_x_2_14) v_x_2_13)) InVars {x_2=v_x_2_14, i_2=v_i_2_13, c=v_c_9, b=v_b_7} OutVars{x_2=v_x_2_13, i_2=v_i_2_12, c=v_c_9, b=v_b_7} 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_i_2_13 v_c_9) (= (+ v_b_7 v_x_2_14) v_x_2_13)) InVars {x_2=v_x_2_14, i_2=v_i_2_13, c=v_c_9, b=v_b_7} OutVars{x_2=v_x_2_13, i_2=v_i_2_12, c=v_c_9, b=v_b_7} AuxVars[] AssignedVars[x_2, i_2] 86#[L23-1, L34-1, L57]true [2023-10-12 17:22:11,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash 84088, now seen corresponding path program 1 times [2023-10-12 17:22:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939732728] [2023-10-12 17:22:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:11,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:11,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:11,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:11,434 INFO L85 PathProgramCache]: Analyzing trace with hash 3777, now seen corresponding path program 1 times [2023-10-12 17:22:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:11,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889006691] [2023-10-12 17:22:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:11,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:11,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:11,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:11,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash 80811384, now seen corresponding path program 1 times [2023-10-12 17:22:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068054584] [2023-10-12 17:22:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:11,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:11,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:11,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:11,535 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:11,536 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:11,536 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:11,536 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:11,536 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:11,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:11,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:11,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:11,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:22:11,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:11,536 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:11,539 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 17:22:11,545 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 17:22:11,584 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:11,584 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:11,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:11,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:11,590 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 17:22:11,593 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 17:22:11,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:11,595 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:11,617 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:22:11,617 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 17:22:11,624 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 17:22:11,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:11,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:11,626 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 17:22:11,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:11,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:11,648 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 17:22:11,665 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 17:22:11,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:11,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:11,667 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 17:22:11,671 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 17:22:11,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:11,673 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:11,891 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:11,895 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 17:22:11,896 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:11,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:11,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:11,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:11,896 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:11,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:11,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:11,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:11,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:22:11,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:11,897 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:11,898 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 17:22:11,903 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 17:22:11,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:11,933 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:11,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:11,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:11,937 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 17:22:11,952 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 17:22:11,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:11,961 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:11,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:11,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:11,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:11,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:11,963 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:11,964 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 17:22:11,973 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:22:11,978 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 17:22:11,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:11,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:11,982 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 17:22:11,992 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 17:22:12,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:12,001 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:12,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:12,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:12,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:12,002 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:12,002 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:12,005 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 17:22:12,016 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:12,019 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:22:12,019 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:22:12,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:12,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:12,027 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 17:22:12,029 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 17:22:12,032 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:12,032 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:22:12,033 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:12,033 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_2, c) = -1*i_2 + 1*c Supporting invariants [] [2023-10-12 17:22:12,040 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 17:22:12,041 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:22:12,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:12,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:22:12,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:12,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:22:12,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:12,103 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 17:22:12,104 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 17:22:12,104 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 17:22:12,262 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 291 transitions. [2023-10-12 17:22:12,263 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:12,293 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:12,294 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 17:22:12,297 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 17:22:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2023-10-12 17:22:12,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:22:12,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:12,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:22:12,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:12,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:22:12,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:12,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 2632 transitions, 19248 flow [2023-10-12 17:22:12,425 INFO L124 PetriNetUnfolderBase]: 383/568 cut-off events. [2023-10-12 17:22:12,425 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-10-12 17:22:12,427 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 2042 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 17:22:12,427 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 46 places, 2632 transitions, 19248 flow [2023-10-12 17:22:12,487 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 46 places, 2632 transitions, 19248 flow [2023-10-12 17:22:12,488 INFO L430 stractBuchiCegarLoop]: Abstraction has has 46 places, 2632 transitions, 19248 flow [2023-10-12 17:22:12,488 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:22:12,488 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 46 places, 2632 transitions, 19248 flow [2023-10-12 17:22:12,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-10-12 17:22:12,499 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 17:22:12,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:22:12,522 INFO L124 PetriNetUnfolderBase]: 153/219 cut-off events. [2023-10-12 17:22:12,522 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-10-12 17:22:12,522 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:22:12,522 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) (= v_i_2_5 v_x_1_3) (= v_i_3_1 v_x_1_3) (= v_x_2_3 v_x_1_3)) InVars {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} OutVars{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} 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_a_7 v_x_1_14) v_x_1_13) (< v_i_1_13 v_c_13)) InVars {x_1=v_x_1_14, a=v_a_7, i_1=v_i_1_13, c=v_c_13} OutVars{x_1=v_x_1_13, a=v_a_7, 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_c_11 v_i_1_10) InVars {i_1=v_i_1_10, c=v_c_11} OutVars{i_1=v_i_1_10, c=v_c_11} AuxVars[] AssignedVars[] 143#[L34-1, L45-1, L58, thread1EXIT]true [92] L45-1-->L45-1: Formula: (and (= (+ v_i_3_13 1) v_i_3_12) (< v_i_3_13 v_c_17) (= (+ v_a_9 v_b_9 v_x_3_14) v_x_3_13)) InVars {a=v_a_9, x_3=v_x_3_14, i_3=v_i_3_13, c=v_c_17, b=v_b_9} OutVars{a=v_a_9, x_3=v_x_3_13, i_3=v_i_3_12, c=v_c_17, b=v_b_9} AuxVars[] AssignedVars[x_3, i_3] 143#[L34-1, L45-1, L58, thread1EXIT]true [2023-10-12 17:22:12,523 INFO L750 eck$LassoCheckResult]: Loop: 143#[L34-1, L45-1, L58, thread1EXIT]true [92] L45-1-->L45-1: Formula: (and (= (+ v_i_3_13 1) v_i_3_12) (< v_i_3_13 v_c_17) (= (+ v_a_9 v_b_9 v_x_3_14) v_x_3_13)) InVars {a=v_a_9, x_3=v_x_3_14, i_3=v_i_3_13, c=v_c_17, b=v_b_9} OutVars{a=v_a_9, x_3=v_x_3_13, i_3=v_i_3_12, c=v_c_17, b=v_b_9} 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 1) v_i_3_12) (< v_i_3_13 v_c_17) (= (+ v_a_9 v_b_9 v_x_3_14) v_x_3_13)) InVars {a=v_a_9, x_3=v_x_3_14, i_3=v_i_3_13, c=v_c_17, b=v_b_9} OutVars{a=v_a_9, x_3=v_x_3_13, i_3=v_i_3_12, c=v_c_17, b=v_b_9} AuxVars[] AssignedVars[x_3, i_3] 143#[L34-1, L45-1, L58, thread1EXIT]true [2023-10-12 17:22:12,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash 350384402, now seen corresponding path program 1 times [2023-10-12 17:22:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:12,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158843551] [2023-10-12 17:22:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:12,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:12,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:12,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:12,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:12,543 INFO L85 PathProgramCache]: Analyzing trace with hash 3905, now seen corresponding path program 1 times [2023-10-12 17:22:12,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:12,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521506784] [2023-10-12 17:22:12,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:12,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:12,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:22:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:22:12,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:22:12,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:12,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1711964178, now seen corresponding path program 2 times [2023-10-12 17:22:12,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:22:12,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517433633] [2023-10-12 17:22:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:22:12,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:22:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:22:12,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:22:12,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517433633] [2023-10-12 17:22:12,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517433633] provided 0 perfect and 1 imperfect interpolant sequences [2023-10-12 17:22:12,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828453883] [2023-10-12 17:22:12,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-10-12 17:22:12,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-10-12 17:22:12,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:12,689 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-10-12 17:22:12,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-10-12 17:22:12,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-10-12 17:22:12,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-10-12 17:22:12,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2023-10-12 17:22:12,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:22:12,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-10-12 17:22:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:22:12,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828453883] provided 0 perfect and 2 imperfect interpolant sequences [2023-10-12 17:22:12,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-10-12 17:22:12,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-10-12 17:22:12,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87895927] [2023-10-12 17:22:12,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-10-12 17:22:12,861 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:12,863 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:12,863 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:12,863 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:12,864 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:22:12,864 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:12,864 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:12,864 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:12,864 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:22:12,864 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:12,864 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:12,867 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 17:22:12,879 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 17:22:12,906 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:12,906 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:22:12,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:12,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:12,908 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 17:22:12,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:12,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:12,926 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 17:22:12,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:22:12,944 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {a=-6, x_3=0, b=6} Honda state: {a=-6, x_3=0, b=6} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:22:12,951 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 17:22:12,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:12,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:12,957 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:22:12,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-10-12 17:22:12,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:22:12,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:12,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:12,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:12,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:12,985 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:22:12,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-10-12 17:22:12,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:22:12,988 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:22:13,086 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:22:13,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:13,090 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:22:13,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:22:13,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:22:13,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:22:13,091 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:22:13,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:13,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:22:13,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:22:13,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: mult-flipped-dist.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:22:13,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:22:13,091 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:22:13,092 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 17:22:13,100 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 17:22:13,127 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:22:13,127 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:22:13,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:13,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:13,129 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:22:13,140 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 17:22:13,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:13,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:13,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:13,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:13,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:13,150 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:13,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:13,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-10-12 17:22:13,161 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:22:13,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:13,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:13,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:13,166 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:22:13,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-10-12 17:22:13,170 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 17:22:13,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:22:13,177 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:22:13,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:22:13,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:22:13,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:22:13,178 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:22:13,178 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:22:13,187 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:22:13,191 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:22:13,191 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:22:13,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:22:13,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:22:13,197 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:22:13,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-10-12 17:22:13,206 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:22:13,206 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:22:13,206 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:22:13,207 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_3, c) = -1*i_3 + 1*c Supporting invariants [] [2023-10-12 17:22:13,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-10-12 17:22:13,212 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:22:13,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:22:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:13,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:22:13,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:22:13,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:22:13,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:22:13,271 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 17:22:13,272 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 17:22:13,273 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 17:22:13,397 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 291 transitions. [2023-10-12 17:22:13,398 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:22:13,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-10-12 17:22:13,799 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:22:13,799 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 17:22:13,800 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 17:22:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2023-10-12 17:22:13,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:22:13,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:13,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 9 letters. Loop has 2 letters. [2023-10-12 17:22:13,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:13,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 190 transitions. Stem has 7 letters. Loop has 4 letters. [2023-10-12 17:22:13,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:22:13,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 40480 transitions, 379136 flow [2023-10-12 17:22:16,558 INFO L124 PetriNetUnfolderBase]: 1183/1751 cut-off events. [2023-10-12 17:22:16,558 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2023-10-12 17:22:16,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 1751 events. 1183/1751 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8029 event pairs, 23 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 17:22:16,562 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 60 places, 40480 transitions, 379136 flow [2023-10-12 17:22:16,968 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 60 places, 40480 transitions, 379136 flow [2023-10-12 17:22:16,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:22:16,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-10-12 17:22:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-10-12 17:22:16,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40480 transitions, 379136 flow. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 17:22:16,972 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:22:16,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:22:36,305 INFO L124 PetriNetUnfolderBase]: 3991/6145 cut-off events. [2023-10-12 17:22:36,305 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2023-10-12 17:22:36,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32156 conditions, 6145 events. 3991/6145 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 36424 event pairs, 13 based on Foata normal form. 0/3610 useless extension candidates. Maximal degree in co-relation 24440. Up to 2223 conditions per place. [2023-10-12 17:22:36,344 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 1211 selfloop transitions, 530 changer transitions 1271/3012 dead transitions. [2023-10-12 17:22:36,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 3012 transitions, 32706 flow [2023-10-12 17:22:36,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 3012 transitions, 32706 flow [2023-10-12 17:22:37,353 INFO L124 PetriNetUnfolderBase]: 3991/6145 cut-off events. [2023-10-12 17:22:37,354 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2023-10-12 17:22:37,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32156 conditions, 6145 events. 3991/6145 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 36459 event pairs, 13 based on Foata normal form. 0/3610 useless extension candidates. Maximal degree in co-relation 24440. Up to 2223 conditions per place. [2023-10-12 17:22:37,363 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 56 places, 3012 transitions, 32706 flow [2023-10-12 17:22:37,390 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 56 places, 3012 transitions, 32706 flow [2023-10-12 17:22:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-10-12 17:22:37,393 INFO L430 stractBuchiCegarLoop]: Abstraction has has 56 places, 3012 transitions, 32706 flow [2023-10-12 17:22:37,393 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:22:37,393 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 56 places, 3012 transitions, 32706 flow [2023-10-12 17:22:38,485 INFO L124 PetriNetUnfolderBase]: 3991/6145 cut-off events. [2023-10-12 17:22:38,485 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2023-10-12 17:22:38,485 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is empty [2023-10-12 17:22:38,490 INFO L201 PluginConnector]: Adding new model mult-flipped-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:22:38 BoogieIcfgContainer [2023-10-12 17:22:38,490 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:22:38,491 INFO L158 Benchmark]: Toolchain (without parser) took 28835.53ms. Allocated memory was 192.9MB in the beginning and 960.5MB in the end (delta: 767.6MB). Free memory was 147.4MB in the beginning and 288.1MB in the end (delta: -140.7MB). Peak memory consumption was 686.6MB. Max. memory is 8.0GB. [2023-10-12 17:22:38,491 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.29ms. Allocated memory is still 192.9MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:22:38,491 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.77ms. Allocated memory is still 192.9MB. Free memory was 147.3MB in the beginning and 145.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:38,492 INFO L158 Benchmark]: Boogie Preprocessor took 20.04ms. Allocated memory is still 192.9MB. Free memory was 145.8MB in the beginning and 144.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:38,492 INFO L158 Benchmark]: RCFGBuilder took 259.24ms. Allocated memory is still 192.9MB. Free memory was 144.6MB in the beginning and 160.1MB in the end (delta: -15.5MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2023-10-12 17:22:38,493 INFO L158 Benchmark]: BuchiAutomizer took 28523.86ms. Allocated memory was 192.9MB in the beginning and 960.5MB in the end (delta: 767.6MB). Free memory was 159.9MB in the beginning and 288.1MB in the end (delta: -128.3MB). Peak memory consumption was 698.0MB. Max. memory is 8.0GB. [2023-10-12 17:22:38,494 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 0.29ms. Allocated memory is still 192.9MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.77ms. Allocated memory is still 192.9MB. Free memory was 147.3MB in the beginning and 145.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.04ms. Allocated memory is still 192.9MB. Free memory was 145.8MB in the beginning and 144.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 259.24ms. Allocated memory is still 192.9MB. Free memory was 144.6MB in the beginning and 160.1MB in the end (delta: -15.5MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 28523.86ms. Allocated memory was 192.9MB in the beginning and 960.5MB in the end (delta: 767.6MB). Free memory was 159.9MB in the beginning and 288.1MB in the end (delta: -128.3MB). Peak memory consumption was 698.0MB. 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 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function c + -1 * i_1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i_2 + c and consists of 5 locations. One deterministic module has affine ranking function -1 * i_3 + c and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 28.4s and 4 iterations. TraceHistogramMax:0. Analysis of lassos took 2.2s. Construction of modules took 0.3s. Büchi inclusion checks took 21.1s. 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, 434 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 431 mSDsluCounter, 202 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 461 IncrementalHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 118 mSDtfsCounter, 461 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf96 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 48ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.1s - 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, 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 17:22:38,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-10-12 17:22:38,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...