/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_PETRI_NET -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:24:38,966 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:24:39,031 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:24:39,066 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:24:39,066 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:24:39,067 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:24:39,068 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:24:39,068 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:24:39,069 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:24:39,072 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:24:39,073 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:24:39,073 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:24:39,073 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:24:39,074 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:24:39,075 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:24:39,075 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:24:39,075 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:24:39,076 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:24:39,076 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:24:39,076 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:24:39,076 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:24:39,077 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:24:39,077 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:24:39,077 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:24:39,077 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:24:39,077 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:24:39,078 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:24:39,078 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:24:39,078 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:24:39,078 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:24:39,079 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:24:39,080 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:24:39,080 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:24:39,082 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:24:39,082 INFO L137 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:24:39,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:24:39,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:24:39,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:24:39,336 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:24:39,337 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:24:39,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl [2023-10-12 17:24:39,339 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl' [2023-10-12 17:24:39,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:24:39,365 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:24:39,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:24:39,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:24:39,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:24:39,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,392 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:24:39,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:24:39,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:24:39,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:24:39,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:24:39,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:24:39,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:24:39,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:24:39,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:24:39,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/1) ... [2023-10-12 17:24:39,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:39,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:39,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-10-12 17:24:39,480 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:24:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:24:39,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:24:39,481 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:24:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:24:39,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:24:39,481 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:24:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:24:39,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:24:39,482 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-10-12 17:24:39,518 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:24:39,519 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:24:39,605 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:24:39,611 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:24:39,612 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:24:39,613 INFO L201 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:24:39 BoogieIcfgContainer [2023-10-12 17:24:39,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:24:39,614 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:24:39,615 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:24:39,618 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:24:39,618 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:24:39,619 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:24:39" (1/2) ... [2023-10-12 17:24:39,620 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b2843dd and model type misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:24:39, skipping insertion in model container [2023-10-12 17:24:39,620 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:24:39,620 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:24:39" (2/2) ... [2023-10-12 17:24:39,621 INFO L332 chiAutomizerObserver]: Analyzing ICFG misc-2-unrolled.wvr.bpl [2023-10-12 17:24:39,707 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:24:39,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 70 flow [2023-10-12 17:24:39,747 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-10-12 17:24:39,748 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:24:39,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-10-12 17:24:39,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 70 flow [2023-10-12 17:24:39,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 58 flow [2023-10-12 17:24:39,760 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:24:39,772 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 23 transitions, 58 flow [2023-10-12 17:24:39,775 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 23 transitions, 58 flow [2023-10-12 17:24:39,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 58 flow [2023-10-12 17:24:39,781 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-10-12 17:24:39,782 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:24:39,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-10-12 17:24:39,783 INFO L119 LiptonReduction]: Number of co-enabled transitions 126 [2023-10-12 17:24:40,075 INFO L134 LiptonReduction]: Checked pairs total: 90 [2023-10-12 17:24:40,075 INFO L136 LiptonReduction]: Total number of compositions: 13 [2023-10-12 17:24:40,087 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:24:40,087 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:24:40,087 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:24:40,087 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:24:40,087 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:24:40,088 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:24:40,088 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:24:40,088 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:24:40,088 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:24:40,091 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:40,092 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:24:40,092 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:24:40,092 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:40,094 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:24:40,094 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:24:40,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:40,095 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:24:40,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:24:40,095 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:40,100 INFO L748 eck$LassoCheckResult]: Stem: 34#[$Ultimate##0]true [46] $Ultimate##0-->L40: Formula: (and (= v_i1_7 v_pos_9) (= v_i2_7 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} OutVars{i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} AuxVars[] AssignedVars[] 36#[L40]true [68] L40-->L17: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 38#[L40-1, L17]true [2023-10-12 17:24:40,100 INFO L750 eck$LassoCheckResult]: Loop: 38#[L40-1, L17]true [86] L17-->L17: Formula: (and (= v_pos_93 v_pos_95) (= (+ 2 v_i1_33) v_i1_32) (< v_i1_33 (* v_N_23 2))) InVars {N=v_N_23, i1=v_i1_33, pos=v_pos_95} OutVars{N=v_N_23, i1=v_i1_32, pos=v_pos_93} AuxVars[] AssignedVars[i1, pos] 38#[L40-1, L17]true [2023-10-12 17:24:40,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:40,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2455, now seen corresponding path program 1 times [2023-10-12 17:24:40,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:40,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235984056] [2023-10-12 17:24:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:40,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:40,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:40,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:40,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:40,216 INFO L85 PathProgramCache]: Analyzing trace with hash 117, now seen corresponding path program 1 times [2023-10-12 17:24:40,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:40,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991527720] [2023-10-12 17:24:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:40,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:40,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:40,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:40,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash 76191, now seen corresponding path program 1 times [2023-10-12 17:24:40,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:40,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997301057] [2023-10-12 17:24:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:40,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:40,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:40,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:40,322 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:40,322 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:40,322 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:40,323 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:40,323 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:24:40,323 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:40,323 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:40,323 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:40,323 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:24:40,323 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:40,324 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:40,336 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:40,346 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:40,389 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:40,390 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:24:40,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:40,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:40,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:40,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:40,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:40,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-10-12 17:24:40,433 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:24:40,434 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {pos=0} Honda state: {pos=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:24:40,437 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 17:24:40,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:40,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:40,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:40,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-10-12 17:24:40,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:40,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:40,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:40,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:40,465 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:40,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:40,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:40,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-10-12 17:24:40,554 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:24:40,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:40,557 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:40,557 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:40,558 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:40,558 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:40,558 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:24:40,558 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:40,558 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:40,558 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:40,558 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:24:40,558 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:40,558 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:40,559 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:40,563 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 17:24:40,605 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:40,608 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:24:40,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:40,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:40,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:40,623 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:24:40,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:40,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:40,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:40,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:40,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:40,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:40,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:40,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-10-12 17:24:40,639 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:24:40,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-10-12 17:24:40,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:40,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:40,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:40,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-10-12 17:24:40,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:24:40,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:40,654 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:40,654 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:40,654 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:40,654 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:40,656 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:40,656 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:40,660 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:24:40,663 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:24:40,663 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:24:40,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:40,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:40,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:40,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-10-12 17:24:40,705 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:24:40,706 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:24:40,706 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:24:40,707 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N) = -1*i1 + 2*N Supporting invariants [] [2023-10-12 17:24:40,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:40,716 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:24:40,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:40,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:24:40,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:40,766 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:24:40,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:24:40,804 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 17:24:40,805 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 17:24:40,905 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 232 transitions. [2023-10-12 17:24:40,906 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:24:40,911 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:24:40,913 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 17:24:40,918 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 17:24:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2023-10-12 17:24:40,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 160 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:24:40,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:40,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 160 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:24:40,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:40,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 160 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:24:40,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:40,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:40,949 INFO L124 PetriNetUnfolderBase]: 31/63 cut-off events. [2023-10-12 17:24:40,950 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-10-12 17:24:40,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 63 events. 31/63 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 151 event pairs, 2 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 96. Up to 21 conditions per place. [2023-10-12 17:24:40,950 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:40,959 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:40,960 INFO L430 stractBuchiCegarLoop]: Abstraction has has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:40,960 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:24:40,960 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:24:40,973 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:24:40,973 INFO L124 PetriNetUnfolderBase]: 17/30 cut-off events. [2023-10-12 17:24:40,974 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-10-12 17:24:40,974 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:24:40,974 INFO L748 eck$LassoCheckResult]: Stem: 34#[$Ultimate##0]true [46] $Ultimate##0-->L40: Formula: (and (= v_i1_7 v_pos_9) (= v_i2_7 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} OutVars{i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} AuxVars[] AssignedVars[] 36#[L40]true [68] L40-->L17: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 38#[L40-1, L17]true [71] L40-1-->L28: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 83#[L41, L17, L28]true [2023-10-12 17:24:40,974 INFO L750 eck$LassoCheckResult]: Loop: 83#[L41, L17, L28]true [85] L28-->L28: Formula: (and (< v_i2_27 (* v_N_17 2)) (= v_i2_26 (+ 2 v_i2_27)) (= v_pos_77 v_pos_75)) InVars {N=v_N_17, i2=v_i2_27, pos=v_pos_77} OutVars{N=v_N_17, i2=v_i2_26, pos=v_pos_75} AuxVars[] AssignedVars[i2, pos] 83#[L41, L17, L28]true [85] L28-->L28: Formula: (and (< v_i2_27 (* v_N_17 2)) (= v_i2_26 (+ 2 v_i2_27)) (= v_pos_77 v_pos_75)) InVars {N=v_N_17, i2=v_i2_27, pos=v_pos_77} OutVars{N=v_N_17, i2=v_i2_26, pos=v_pos_75} AuxVars[] AssignedVars[i2, pos] 83#[L41, L17, L28]true [2023-10-12 17:24:40,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash 76176, now seen corresponding path program 1 times [2023-10-12 17:24:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:40,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235294115] [2023-10-12 17:24:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:40,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:40,987 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:40,993 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:40,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:40,994 INFO L85 PathProgramCache]: Analyzing trace with hash 3681, now seen corresponding path program 1 times [2023-10-12 17:24:40,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:40,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390460239] [2023-10-12 17:24:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:40,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:40,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:41,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:41,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:41,003 INFO L85 PathProgramCache]: Analyzing trace with hash 73207856, now seen corresponding path program 1 times [2023-10-12 17:24:41,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:24:41,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690931449] [2023-10-12 17:24:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:24:41,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:24:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:41,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:24:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:24:41,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:24:41,061 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:41,061 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:41,062 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:41,062 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:41,062 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:24:41,062 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:41,062 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:41,062 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:41,062 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:24:41,062 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:41,062 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:41,063 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:41,066 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:41,090 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:41,090 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:24:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:41,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:41,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:41,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:41,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:41,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-10-12 17:24:41,121 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:24:41,121 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {pos=0} Honda state: {pos=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:24:41,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:41,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:41,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:41,126 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:41,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-10-12 17:24:41,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:24:41,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:41,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:41,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:41,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:41,164 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:41,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-10-12 17:24:41,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:24:41,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:24:41,313 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:24:41,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:41,316 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:24:41,317 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:24:41,317 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:24:41,317 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:24:41,317 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:24:41,317 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:41,317 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:24:41,317 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:24:41,317 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:24:41,318 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:24:41,318 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:24:41,319 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:41,328 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:24:41,362 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:24:41,362 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:24:41,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:41,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:41,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:41,376 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:24:41,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:41,386 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:41,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:41,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:41,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:41,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:41,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:41,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-10-12 17:24:41,401 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:24:41,406 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 17:24:41,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:41,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:41,408 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:41,416 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:24:41,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:24:41,423 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:24:41,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:24:41,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:24:41,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:24:41,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:24:41,425 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:24:41,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-10-12 17:24:41,441 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:24:41,444 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:24:41,444 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:24:41,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:24:41,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:24:41,445 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:24:41,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-10-12 17:24:41,448 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:24:41,448 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:24:41,448 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:24:41,448 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N) = -1*i2 + 2*N Supporting invariants [] [2023-10-12 17:24:41,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-10-12 17:24:41,454 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:24:41,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:24:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:41,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:24:41,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:24:41,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:24:41,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:24:41,511 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 17:24:41,512 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-10-12 17:24:41,512 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:24:41,673 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 306 transitions. [2023-10-12 17:24:41,673 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:24:41,699 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:24:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-10-12 17:24:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:24:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2023-10-12 17:24:41,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 200 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:24:41,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:41,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 200 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:24:41,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:41,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 200 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:24:41,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:24:41,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:41,739 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 17:24:41,744 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 17:24:41,776 INFO L124 PetriNetUnfolderBase]: 67/136 cut-off events. [2023-10-12 17:24:41,776 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-10-12 17:24:41,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 136 events. 67/136 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 497 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 240. Up to 48 conditions per place. [2023-10-12 17:24:41,777 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:41,803 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:41,803 INFO L430 stractBuchiCegarLoop]: Abstraction has has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:41,804 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:24:41,804 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 40 places, 1864 transitions, 13488 flow [2023-10-12 17:24:41,848 INFO L124 PetriNetUnfolderBase]: 67/136 cut-off events. [2023-10-12 17:24:41,848 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-10-12 17:24:41,848 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is empty [2023-10-12 17:24:41,855 INFO L201 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:24:41 BoogieIcfgContainer [2023-10-12 17:24:41,855 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:24:41,856 INFO L158 Benchmark]: Toolchain (without parser) took 2490.52ms. Allocated memory was 197.1MB in the beginning and 298.8MB in the end (delta: 101.7MB). Free memory was 150.9MB in the beginning and 248.3MB in the end (delta: -97.5MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2023-10-12 17:24:41,857 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.27ms. Allocated memory is still 197.1MB. Free memory is still 151.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:24:41,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.49ms. Allocated memory is still 197.1MB. Free memory was 150.7MB in the beginning and 149.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:24:41,860 INFO L158 Benchmark]: Boogie Preprocessor took 17.33ms. Allocated memory is still 197.1MB. Free memory was 149.2MB in the beginning and 148.2MB in the end (delta: 982.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:24:41,861 INFO L158 Benchmark]: RCFGBuilder took 201.03ms. Allocated memory is still 197.1MB. Free memory was 148.2MB in the beginning and 139.1MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-10-12 17:24:41,862 INFO L158 Benchmark]: BuchiAutomizer took 2241.07ms. Allocated memory was 197.1MB in the beginning and 298.8MB in the end (delta: 101.7MB). Free memory was 138.9MB in the beginning and 248.3MB in the end (delta: -109.4MB). Peak memory consumption was 42.9MB. Max. memory is 8.0GB. [2023-10-12 17:24:41,869 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 0.27ms. Allocated memory is still 197.1MB. Free memory is still 151.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.49ms. Allocated memory is still 197.1MB. Free memory was 150.7MB in the beginning and 149.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.33ms. Allocated memory is still 197.1MB. Free memory was 149.2MB in the beginning and 148.2MB in the end (delta: 982.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 201.03ms. Allocated memory is still 197.1MB. Free memory was 148.2MB in the beginning and 139.1MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 2241.07ms. Allocated memory was 197.1MB in the beginning and 298.8MB in the end (delta: 101.7MB). Free memory was 138.9MB in the beginning and 248.3MB in the end (delta: -109.4MB). Peak memory consumption was 42.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * N + -1 * i1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i2 + 2 * N and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 1.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 177 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 89 mSDtfsCounter, 177 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp81 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.3s - 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: 0.3s, 28 PlacesBefore, 16 PlacesAfterwards, 23 TransitionsBefore, 11 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 90, independent: 90, independent conditional: 0, independent unconditional: 90, 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: 76, independent: 76, independent conditional: 0, independent unconditional: 76, 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: 76, independent: 68, independent conditional: 0, independent unconditional: 68, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 90, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 76, unknown conditional: 0, unknown unconditional: 76] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:24:41,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...