/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/popl20/figure1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:30:40,145 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:30:40,184 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 17:30:40,199 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:30:40,199 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:30:40,199 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:30:40,200 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:30:40,205 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:30:40,205 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:30:40,208 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:30:40,208 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:30:40,209 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:30:40,209 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:30:40,209 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:30:40,209 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:30:40,210 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:30:40,210 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:30:40,210 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:30:40,210 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:30:40,210 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:30:40,211 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:30:40,212 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:30:40,212 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:30:40,212 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:30:40,213 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:30:40,213 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:30:40,213 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:30:40,213 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:30:40,213 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:30:40,213 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:30:40,214 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:30:40,214 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:30:40,215 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:30:40,216 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:30:40,216 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2023-10-12 17:30:40,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:30:40,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:30:40,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:30:40,434 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:30:40,434 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:30:40,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1.wvr.bpl [2023-10-12 17:30:40,435 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1.wvr.bpl' [2023-10-12 17:30:40,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:30:40,455 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:30:40,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:30:40,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:30:40,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:30:40,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,476 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:30:40,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:30:40,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:30:40,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:30:40,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:30:40,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:30:40,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:30:40,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:30:40,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:30:40,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/1) ... [2023-10-12 17:30:40,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:40,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:40,516 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 17:30:40,550 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 17:30:40,573 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:30:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:30:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:30:40,574 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:30:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:30:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:30:40,574 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:30:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:30:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:30:40,575 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 17:30:40,611 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:30:40,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:30:40,703 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:30:40,728 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:30:40,728 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:30:40,730 INFO L201 PluginConnector]: Adding new model figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:30:40 BoogieIcfgContainer [2023-10-12 17:30:40,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:30:40,731 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:30:40,731 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:30:40,734 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:30:40,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:30:40,734 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:30:40" (1/2) ... [2023-10-12 17:30:40,735 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5676f94d and model type figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:30:40, skipping insertion in model container [2023-10-12 17:30:40,736 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:30:40,736 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:30:40" (2/2) ... [2023-10-12 17:30:40,739 INFO L332 chiAutomizerObserver]: Analyzing ICFG figure1.wvr.bpl [2023-10-12 17:30:40,800 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:30:40,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 64 flow [2023-10-12 17:30:40,841 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-10-12 17:30:40,841 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:30:40,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:30:40,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 64 flow [2023-10-12 17:30:40,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2023-10-12 17:30:40,850 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:30:40,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 20 transitions, 52 flow [2023-10-12 17:30:40,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 20 transitions, 52 flow [2023-10-12 17:30:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 52 flow [2023-10-12 17:30:40,875 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-10-12 17:30:40,875 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:30:40,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:30:40,876 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-10-12 17:30:41,034 INFO L134 LiptonReduction]: Checked pairs total: 37 [2023-10-12 17:30:41,034 INFO L136 LiptonReduction]: Total number of compositions: 10 [2023-10-12 17:30:41,043 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:30:41,043 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:30:41,043 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:30:41,043 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:30:41,043 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:30:41,043 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:30:41,043 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:30:41,044 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2023-10-12 17:30:41,044 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:30:41,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:41,046 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:30:41,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:30:41,048 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:41,050 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:30:41,050 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:30:41,051 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:41,051 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:30:41,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:30:41,051 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:41,054 INFO L748 eck$LassoCheckResult]: Stem: 31#[$Ultimate##0]true [77] $Ultimate##0-->L45: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_22 0) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} AuxVars[] AssignedVars[] 33#[L45]true [62] L45-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 35#[L19-1, L45-1]true [2023-10-12 17:30:41,055 INFO L750 eck$LassoCheckResult]: Loop: 35#[L19-1, L45-1]true [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 35#[L19-1, L45-1]true [2023-10-12 17:30:41,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:41,058 INFO L85 PathProgramCache]: Analyzing trace with hash 3410, now seen corresponding path program 1 times [2023-10-12 17:30:41,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:41,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699420863] [2023-10-12 17:30:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:41,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:41,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash 100, now seen corresponding path program 1 times [2023-10-12 17:30:41,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:41,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391191237] [2023-10-12 17:30:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:41,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:41,195 INFO L85 PathProgramCache]: Analyzing trace with hash 105779, now seen corresponding path program 1 times [2023-10-12 17:30:41,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:41,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487235776] [2023-10-12 17:30:41,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:41,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:41,262 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:41,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:41,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:41,262 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:41,262 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:41,262 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:41,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:41,263 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:30:41,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:41,263 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:41,274 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 17:30:41,283 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 17:30:41,318 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:41,318 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:41,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:41,327 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 17:30:41,328 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 17:30:41,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:41,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:41,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-10-12 17:30:41,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:41,353 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 17:30:41,354 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 17:30:41,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:41,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:41,416 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:30:41,416 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {counter=0} Honda state: {counter=0} Generalized eigenvectors: [{counter=1}, {counter=-2}, {counter=2}] Lambdas: [1, 2, 1] Nus: [0, 1] [2023-10-12 17:30:41,421 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 17:30:41,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:41,423 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 17:30:41,425 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 17:30:41,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:41,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:41,451 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 17:30:41,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:41,454 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 17:30:41,456 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 17:30:41,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:41,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:41,573 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:41,577 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 17:30:41,577 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:41,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:41,578 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:41,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:41,578 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:41,578 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:41,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:41,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:30:41,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:41,578 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:41,579 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 17:30:41,583 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 17:30:41,606 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:41,609 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:41,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:41,612 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 17:30:41,614 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 17:30:41,616 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 17:30:41,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:41,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:41,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:41,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:41,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:41,625 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:41,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:41,629 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:30:41,632 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 17:30:41,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:41,636 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 17:30:41,636 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 17:30:41,640 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 17:30:41,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:41,647 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:41,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:41,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:41,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:41,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:41,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:41,651 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:41,654 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:30:41,654 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:30:41,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:41,658 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 17:30:41,659 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 17:30:41,660 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:41,660 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:41,660 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:41,661 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N1, i1) = 1*N1 - 1*i1 Supporting invariants [] [2023-10-12 17:30:41,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-10-12 17:30:41,672 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:41,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:41,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:41,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:41,708 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:30:41,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:41,709 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 17:30:41,732 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 17:30:41,734 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 17:30:41,807 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 196 transitions. [2023-10-12 17:30:41,808 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:41,811 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:41,812 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 17:30:41,815 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 17:30:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2023-10-12 17:30:41,821 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 136 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:30:41,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:41,821 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 136 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:30:41,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:41,821 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 136 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:30:41,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:41,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:30:41,842 INFO L124 PetriNetUnfolderBase]: 31/63 cut-off events. [2023-10-12 17:30:41,842 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-10-12 17:30:41,844 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 148 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 17:30:41,844 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:30:41,851 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 26 places, 124 transitions, 640 flow [2023-10-12 17:30:41,852 INFO L430 stractBuchiCegarLoop]: Abstraction has has 26 places, 124 transitions, 640 flow [2023-10-12 17:30:41,852 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:30:41,852 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 places, 124 transitions, 640 flow [2023-10-12 17:30:41,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:41,858 INFO L124 PetriNetUnfolderBase]: 16/27 cut-off events. [2023-10-12 17:30:41,858 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:30:41,858 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:41,858 INFO L748 eck$LassoCheckResult]: Stem: 31#[$Ultimate##0]true [77] $Ultimate##0-->L45: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_22 0) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} AuxVars[] AssignedVars[] 33#[L45]true [62] L45-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 35#[L19-1, L45-1]true [65] L45-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 80#[L19-1, L46, L30-1]true [2023-10-12 17:30:41,858 INFO L750 eck$LassoCheckResult]: Loop: 80#[L19-1, L46, L30-1]true [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 80#[L19-1, L46, L30-1]true [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 80#[L19-1, L46, L30-1]true [2023-10-12 17:30:41,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash 105775, now seen corresponding path program 1 times [2023-10-12 17:30:41,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:41,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014080712] [2023-10-12 17:30:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:41,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:41,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 3265, now seen corresponding path program 1 times [2023-10-12 17:30:41,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:41,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097386770] [2023-10-12 17:30:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,874 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:41,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:41,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash 101652079, now seen corresponding path program 1 times [2023-10-12 17:30:41,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:41,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462697243] [2023-10-12 17:30:41,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:41,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:41,915 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 17:30:41,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:41,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462697243] [2023-10-12 17:30:41,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462697243] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:30:41,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:30:41,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:30:41,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809013746] [2023-10-12 17:30:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:30:41,964 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:41,965 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:41,965 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:41,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:41,965 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:41,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:41,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:41,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:30:41,965 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:41,965 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:41,967 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 17:30:41,971 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 17:30:41,997 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:41,997 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:41,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:41,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:41,999 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 17:30:42,000 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 17:30:42,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:42,038 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:42,071 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 17:30:42,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:42,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:42,085 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 17:30:42,087 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 17:30:42,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:42,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:42,128 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:42,133 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 17:30:42,134 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:42,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:42,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:42,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:42,134 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:42,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:42,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:42,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:42,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:30:42,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:42,134 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:42,135 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 17:30:42,141 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 17:30:42,169 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:42,169 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:42,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:42,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:42,187 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 17:30:42,191 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 17:30:42,193 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 17:30:42,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:42,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:42,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:42,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:42,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:42,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:42,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:42,216 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:42,218 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:30:42,218 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:30:42,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:42,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:42,220 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 17:30:42,221 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 17:30:42,223 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:42,223 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:42,223 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:42,223 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter) = 1*counter Supporting invariants [] [2023-10-12 17:30:42,226 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 17:30:42,227 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:42,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:42,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:42,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:42,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:42,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:42,260 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 17:30:42,261 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 17:30:42,261 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 17:30:42,303 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 6 states and 224 transitions. [2023-10-12 17:30:42,303 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:42,310 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:42,311 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 17:30:42,311 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 17:30:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2023-10-12 17:30:42,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 132 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:30:42,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:42,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 132 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:30:42,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:42,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 132 transitions. Stem has 3 letters. Loop has 4 letters. [2023-10-12 17:30:42,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:42,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 1624 transitions, 11760 flow [2023-10-12 17:30:42,340 INFO L124 PetriNetUnfolderBase]: 73/165 cut-off events. [2023-10-12 17:30:42,341 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-10-12 17:30:42,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 165 events. 73/165 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 725 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 270. Up to 57 conditions per place. [2023-10-12 17:30:42,341 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 38 places, 1624 transitions, 11760 flow [2023-10-12 17:30:42,355 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 38 places, 1624 transitions, 11760 flow [2023-10-12 17:30:42,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:30:42,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:30:42,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:30:42,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 1624 transitions, 11760 flow. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:30:42,358 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:30:42,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:30:42,442 INFO L124 PetriNetUnfolderBase]: 87/213 cut-off events. [2023-10-12 17:30:42,442 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-10-12 17:30:42,443 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 17:30:42,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 213 events. 87/213 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 990 event pairs, 3 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 456. Up to 160 conditions per place. [2023-10-12 17:30:42,455 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 17:30:42,457 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 81 selfloop transitions, 4 changer transitions 67/152 dead transitions. [2023-10-12 17:30:42,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 152 transitions, 1378 flow [2023-10-12 17:30:42,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 152 transitions, 1378 flow [2023-10-12 17:30:42,470 INFO L124 PetriNetUnfolderBase]: 87/213 cut-off events. [2023-10-12 17:30:42,470 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-10-12 17:30:42,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 213 events. 87/213 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 985 event pairs, 3 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 456. Up to 160 conditions per place. [2023-10-12 17:30:42,470 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 34 places, 152 transitions, 1378 flow [2023-10-12 17:30:42,472 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 34 places, 152 transitions, 1378 flow [2023-10-12 17:30:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:30:42,473 INFO L430 stractBuchiCegarLoop]: Abstraction has has 34 places, 152 transitions, 1378 flow [2023-10-12 17:30:42,473 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:30:42,473 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 34 places, 152 transitions, 1378 flow [2023-10-12 17:30:42,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:42,479 INFO L124 PetriNetUnfolderBase]: 47/102 cut-off events. [2023-10-12 17:30:42,479 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-10-12 17:30:42,479 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:42,480 INFO L748 eck$LassoCheckResult]: Stem: 31#[$Ultimate##0]true [77] $Ultimate##0-->L45: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_22 0) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} AuxVars[] AssignedVars[] 33#[L45]true [62] L45-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 35#[L19-1, L45-1]true [65] L45-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 80#[L19-1, L46, L30-1]true [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 80#[L19-1, L46, L30-1]true [68] L19-1-->thread1EXIT: Formula: (<= v_N1_4 v_i1_10) InVars {i1=v_i1_10, N1=v_N1_4} OutVars{i1=v_i1_10, N1=v_N1_4} AuxVars[] AssignedVars[] 133#[L46, L30-1, thread1EXIT]true [2023-10-12 17:30:42,480 INFO L750 eck$LassoCheckResult]: Loop: 133#[L46, L30-1, thread1EXIT]true [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 133#[L46, L30-1, thread1EXIT]true [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 133#[L46, L30-1, thread1EXIT]true [2023-10-12 17:30:42,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash 101651982, now seen corresponding path program 1 times [2023-10-12 17:30:42,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:42,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291411121] [2023-10-12 17:30:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:42,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:42,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:42,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:42,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash 3265, now seen corresponding path program 2 times [2023-10-12 17:30:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749219239] [2023-10-12 17:30:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:42,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:42,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:42,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1096690802, now seen corresponding path program 1 times [2023-10-12 17:30:42,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:42,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845238751] [2023-10-12 17:30:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:42,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:30:42,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:42,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845238751] [2023-10-12 17:30:42,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845238751] provided 0 perfect and 1 imperfect interpolant sequences [2023-10-12 17:30:42,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724088330] [2023-10-12 17:30:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:42,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-10-12 17:30:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:42,707 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-10-12 17:30:42,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-10-12 17:30:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:42,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:30:42,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:30:42,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-10-12 17:30:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:30:42,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724088330] provided 0 perfect and 2 imperfect interpolant sequences [2023-10-12 17:30:42,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-10-12 17:30:42,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-10-12 17:30:42,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233752135] [2023-10-12 17:30:42,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-10-12 17:30:42,902 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:42,902 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:42,902 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:42,902 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:42,902 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:42,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:42,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:42,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:42,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:30:42,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:42,902 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:42,903 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 17:30:42,908 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 17:30:42,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:42,932 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:42,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:42,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:42,939 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:30:42,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-10-12 17:30:42,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:42,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:42,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:42,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:42,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:42,992 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 17:30:43,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:43,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:43,037 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 17:30:43,247 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:43,251 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 17:30:43,252 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:43,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:43,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:43,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:43,252 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:43,252 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:43,252 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:43,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:43,252 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:30:43,252 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:43,252 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:43,253 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 17:30:43,260 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 17:30:43,293 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:43,293 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:43,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:43,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:43,295 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 17:30:43,296 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 17:30:43,298 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 17:30:43,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:43,304 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:43,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:43,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:43,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:43,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:43,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:43,329 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:43,333 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:30:43,333 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:30:43,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:43,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:43,334 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 17:30:43,336 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 17:30:43,337 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:43,337 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:43,338 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:43,338 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N2) = -1*i2 + 1*N2 Supporting invariants [] [2023-10-12 17:30:43,341 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 17:30:43,341 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:43,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:43,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:43,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:43,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:43,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:43,381 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 17:30:43,381 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 17:30:43,381 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:30:43,466 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 7 states and 259 transitions. [2023-10-12 17:30:43,466 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:43,480 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:43,481 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 17:30:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:30:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2023-10-12 17:30:43,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 170 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:30:43,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:43,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 170 transitions. Stem has 7 letters. Loop has 2 letters. [2023-10-12 17:30:43,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:43,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 170 transitions. Stem has 5 letters. Loop has 4 letters. [2023-10-12 17:30:43,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:43,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 2360 transitions, 26192 flow [2023-10-12 17:30:43,601 INFO L124 PetriNetUnfolderBase]: 184/439 cut-off events. [2023-10-12 17:30:43,601 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2023-10-12 17:30:43,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 439 events. 184/439 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2580 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 809. Up to 337 conditions per place. [2023-10-12 17:30:43,602 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 48 places, 2360 transitions, 26192 flow [2023-10-12 17:30:43,628 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 48 places, 2360 transitions, 26192 flow [2023-10-12 17:30:43,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:30:43,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:30:43,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:30:43,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 2360 transitions, 26192 flow. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:30:43,629 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:30:43,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:30:43,670 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 17:30:43,891 INFO L124 PetriNetUnfolderBase]: 300/770 cut-off events. [2023-10-12 17:30:43,891 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2023-10-12 17:30:43,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 770 events. 300/770 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5455 event pairs, 0 based on Foata normal form. 0/480 useless extension candidates. Maximal degree in co-relation 1650. Up to 668 conditions per place. [2023-10-12 17:30:43,896 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 201 selfloop transitions, 22 changer transitions 463/686 dead transitions. [2023-10-12 17:30:43,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 686 transitions, 9111 flow [2023-10-12 17:30:43,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 686 transitions, 9111 flow [2023-10-12 17:30:44,055 INFO L124 PetriNetUnfolderBase]: 300/770 cut-off events. [2023-10-12 17:30:44,056 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2023-10-12 17:30:44,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 770 events. 300/770 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5461 event pairs, 0 based on Foata normal form. 0/480 useless extension candidates. Maximal degree in co-relation 1650. Up to 668 conditions per place. [2023-10-12 17:30:44,057 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 45 places, 686 transitions, 9111 flow [2023-10-12 17:30:44,072 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 45 places, 686 transitions, 9111 flow [2023-10-12 17:30:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-10-12 17:30:44,074 INFO L430 stractBuchiCegarLoop]: Abstraction has has 45 places, 686 transitions, 9111 flow [2023-10-12 17:30:44,074 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:30:44,074 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 45 places, 686 transitions, 9111 flow [2023-10-12 17:30:44,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:30:44,111 INFO L124 PetriNetUnfolderBase]: 134/320 cut-off events. [2023-10-12 17:30:44,111 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2023-10-12 17:30:44,111 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2023-10-12 17:30:44,113 INFO L748 eck$LassoCheckResult]: Stem: 31#[$Ultimate##0]true [77] $Ultimate##0-->L45: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_22 0) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} AuxVars[] AssignedVars[] 33#[L45]true [62] L45-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 35#[L19-1, L45-1]true [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 35#[L19-1, L45-1]true [65] L45-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 80#[L19-1, L46, L30-1]true [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 80#[L19-1, L46, L30-1]true [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 80#[L19-1, L46, L30-1]true [2023-10-12 17:30:44,113 INFO L750 eck$LassoCheckResult]: Loop: 80#[L19-1, L46, L30-1]true [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 80#[L19-1, L46, L30-1]true [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 80#[L19-1, L46, L30-1]true [2023-10-12 17:30:44,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1143640431, now seen corresponding path program 1 times [2023-10-12 17:30:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:44,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975407025] [2023-10-12 17:30:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:44,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash 3265, now seen corresponding path program 3 times [2023-10-12 17:30:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:44,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973773485] [2023-10-12 17:30:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,143 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:30:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:30:44,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:30:44,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,146 INFO L85 PathProgramCache]: Analyzing trace with hash 473175889, now seen corresponding path program 2 times [2023-10-12 17:30:44,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:30:44,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373540513] [2023-10-12 17:30:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:30:44,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:30:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:44,231 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 17:30:44,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:30:44,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373540513] [2023-10-12 17:30:44,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373540513] provided 0 perfect and 1 imperfect interpolant sequences [2023-10-12 17:30:44,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336155199] [2023-10-12 17:30:44,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-10-12 17:30:44,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-10-12 17:30:44,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,233 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-10-12 17:30:44,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-10-12 17:30:44,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-10-12 17:30:44,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2023-10-12 17:30:44,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:44,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-10-12 17:30:44,290 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 17:30:44,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-10-12 17:30:44,307 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 17:30:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336155199] provided 0 perfect and 2 imperfect interpolant sequences [2023-10-12 17:30:44,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-10-12 17:30:44,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-10-12 17:30:44,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404496276] [2023-10-12 17:30:44,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-10-12 17:30:44,335 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:44,336 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:44,336 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:44,336 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:44,336 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:30:44,336 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,336 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:44,336 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:44,336 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:30:44,336 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:44,336 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:44,336 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 17:30:44,340 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 17:30:44,358 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:44,358 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:30:44,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,360 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 17:30:44,362 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 17:30:44,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:30:44,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:44,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-10-12 17:30:44,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,387 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 17:30:44,394 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 17:30:44,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:30:44,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:30:44,622 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:30:44,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:44,636 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:30:44,637 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:30:44,637 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:30:44,637 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:30:44,637 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:30:44,637 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,637 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:30:44,637 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:30:44,637 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:30:44,637 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:30:44,637 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:30:44,638 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 17:30:44,643 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 17:30:44,672 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:30:44,672 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:30:44,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,837 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:30:44,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-10-12 17:30:44,842 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 17:30:44,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:30:44,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:30:44,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:30:44,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:30:44,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:30:44,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:30:44,850 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:30:44,866 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:30:44,876 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:30:44,876 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:30:44,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:30:44,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:30:44,879 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:30:44,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-10-12 17:30:44,894 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:30:44,894 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:30:44,894 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:30:44,895 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N2) = -1*i2 + 1*N2 Supporting invariants [] [2023-10-12 17:30:44,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:44,904 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:30:44,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:30:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:44,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:30:44,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:30:44,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2023-10-12 17:30:44,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:30:44,936 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 17:30:44,937 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 17:30:44,937 INFO L74 BuchiComplementNCSB]: Start buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:30:45,011 INFO L82 BuchiComplementNCSB]: Finished buchiComplementNCSB. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 7 states and 259 transitions. [2023-10-12 17:30:45,011 INFO L79 BuchiIntersect]: Starting Intersection [2023-10-12 17:30:45,085 INFO L86 BuchiIntersect]: Exiting Intersection [2023-10-12 17:30:45,085 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 17:30:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:30:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2023-10-12 17:30:45,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 170 transitions. Stem has 6 letters. Loop has 2 letters. [2023-10-12 17:30:45,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:45,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 170 transitions. Stem has 8 letters. Loop has 2 letters. [2023-10-12 17:30:45,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:45,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 170 transitions. Stem has 6 letters. Loop has 4 letters. [2023-10-12 17:30:45,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:30:45,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 10706 transitions, 163948 flow [2023-10-12 17:30:45,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:47,266 INFO L124 PetriNetUnfolderBase]: 596/1542 cut-off events. [2023-10-12 17:30:47,266 INFO L125 PetriNetUnfolderBase]: For 760/760 co-relation queries the response was YES. [2023-10-12 17:30:47,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11477 conditions, 1542 events. 596/1542 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 12769 event pairs, 0 based on Foata normal form. 0/924 useless extension candidates. Maximal degree in co-relation 3564. Up to 1440 conditions per place. [2023-10-12 17:30:47,271 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 59 places, 10706 transitions, 163948 flow [2023-10-12 17:30:47,437 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 59 places, 10706 transitions, 163948 flow [2023-10-12 17:30:47,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:30:47,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-10-12 17:30:47,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-10-12 17:30:47,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 10706 transitions, 163948 flow. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:30:47,438 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:30:47,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:30:51,784 INFO L124 PetriNetUnfolderBase]: 1015/2659 cut-off events. [2023-10-12 17:30:51,784 INFO L125 PetriNetUnfolderBase]: For 1313/1313 co-relation queries the response was YES. [2023-10-12 17:30:51,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22434 conditions, 2659 events. 1015/2659 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 24422 event pairs, 0 based on Foata normal form. 0/1597 useless extension candidates. Maximal degree in co-relation 6912. Up to 2557 conditions per place. [2023-10-12 17:30:51,797 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 455 selfloop transitions, 88 changer transitions 1849/2392 dead transitions. [2023-10-12 17:30:51,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 2392 transitions, 41299 flow [2023-10-12 17:30:51,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 2392 transitions, 41299 flow [2023-10-12 17:30:52,532 INFO L124 PetriNetUnfolderBase]: 1015/2659 cut-off events. [2023-10-12 17:30:52,532 INFO L125 PetriNetUnfolderBase]: For 1313/1313 co-relation queries the response was YES. [2023-10-12 17:30:52,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22434 conditions, 2659 events. 1015/2659 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 24424 event pairs, 0 based on Foata normal form. 0/1597 useless extension candidates. Maximal degree in co-relation 6912. Up to 2557 conditions per place. [2023-10-12 17:30:52,533 INFO L82 GeneralOperation]: Start removeDeadBuchi. Operand has 57 places, 2392 transitions, 41299 flow [2023-10-12 17:30:52,555 INFO L88 GeneralOperation]: Finished RemoveDeadBuchi, result has has 57 places, 2392 transitions, 41299 flow [2023-10-12 17:30:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-10-12 17:30:52,556 INFO L430 stractBuchiCegarLoop]: Abstraction has has 57 places, 2392 transitions, 41299 flow [2023-10-12 17:30:52,556 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:30:52,556 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 57 places, 2392 transitions, 41299 flow [2023-10-12 17:30:53,321 INFO L124 PetriNetUnfolderBase]: 1015/2659 cut-off events. [2023-10-12 17:30:53,321 INFO L125 PetriNetUnfolderBase]: For 1313/1313 co-relation queries the response was YES. [2023-10-12 17:30:53,321 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is empty [2023-10-12 17:30:53,325 INFO L201 PluginConnector]: Adding new model figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:30:53 BoogieIcfgContainer [2023-10-12 17:30:53,325 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:30:53,326 INFO L158 Benchmark]: Toolchain (without parser) took 12870.77ms. Allocated memory was 223.3MB in the beginning and 598.7MB in the end (delta: 375.4MB). Free memory was 181.2MB in the beginning and 440.0MB in the end (delta: -258.8MB). Peak memory consumption was 403.0MB. Max. memory is 8.0GB. [2023-10-12 17:30:53,326 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.23ms. Allocated memory is still 223.3MB. Free memory is still 182.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:30:53,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.25ms. Allocated memory is still 223.3MB. Free memory was 181.2MB in the beginning and 179.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:30:53,327 INFO L158 Benchmark]: Boogie Preprocessor took 13.92ms. Allocated memory is still 223.3MB. Free memory was 179.7MB in the beginning and 178.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:30:53,327 INFO L158 Benchmark]: RCFGBuilder took 236.87ms. Allocated memory is still 223.3MB. Free memory was 178.4MB in the beginning and 168.7MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-10-12 17:30:53,327 INFO L158 Benchmark]: BuchiAutomizer took 12594.38ms. Allocated memory was 223.3MB in the beginning and 598.7MB in the end (delta: 375.4MB). Free memory was 168.4MB in the beginning and 440.0MB in the end (delta: -271.6MB). Peak memory consumption was 390.4MB. Max. memory is 8.0GB. [2023-10-12 17:30:53,328 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23ms. Allocated memory is still 223.3MB. Free memory is still 182.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.25ms. Allocated memory is still 223.3MB. Free memory was 181.2MB in the beginning and 179.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.92ms. Allocated memory is still 223.3MB. Free memory was 179.7MB in the beginning and 178.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 236.87ms. Allocated memory is still 223.3MB. Free memory was 178.4MB in the beginning and 168.7MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 12594.38ms. Allocated memory was 223.3MB in the beginning and 598.7MB in the end (delta: 375.4MB). Free memory was 168.4MB in the beginning and 440.0MB in the end (delta: -271.6MB). Peak memory consumption was 390.4MB. 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 7 terminating modules (3 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function N1 + -1 * i1 and consists of 4 locations. One deterministic module has affine ranking function counter and consists of 4 locations. One deterministic module has affine ranking function -1 * i2 + N2 and consists of 5 locations. One deterministic module has affine ranking function -1 * i2 + N2 and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.5s and 5 iterations. TraceHistogramMax:0. Analysis of lassos took 2.6s. Construction of modules took 0.2s. Büchi inclusion checks took 5.9s. 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 [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 3/3 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 334 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330 mSDsluCounter, 269 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 384 IncrementalHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 148 mSDtfsCounter, 384 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s InitialAbstractionConstructionTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 25 PlacesBefore, 16 PlacesAfterwards, 20 TransitionsBefore, 11 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 6 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 28, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 28, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 37, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 28, unknown conditional: 0, unknown unconditional: 28] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:30:53,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:53,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-10-12 17:30:53,746 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...