/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 RABIN_PETRI_NET -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:41:31,247 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:41:31,301 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 17:41:31,329 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:41:31,330 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:41:31,330 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:41:31,331 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:41:31,331 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:41:31,332 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:41:31,334 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:41:31,334 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:41:31,335 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:41:31,335 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:41:31,336 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:41:31,336 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:41:31,336 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:41:31,337 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:41:31,337 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:41:31,337 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:41:31,337 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:41:31,337 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:41:31,337 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:41:31,338 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:41:31,338 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:41:31,338 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:41:31,339 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:41:31,339 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:41:31,339 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:41:31,339 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:41:31,339 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:41:31,340 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:41:31,340 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:41:31,340 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:41:31,341 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:41:31,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> RABIN_PETRI_NET [2023-10-12 17:41:31,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:41:31,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:41:31,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:41:31,520 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:41:31,521 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:41:31,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure3.wvr.bpl [2023-10-12 17:41:31,522 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure3.wvr.bpl' [2023-10-12 17:41:31,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:41:31,543 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:41:31,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:41:31,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:41:31,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:41:31,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,561 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:41:31,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:41:31,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:41:31,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:41:31,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:41:31,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:41:31,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:41:31,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:41:31,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:41:31,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/1) ... [2023-10-12 17:41:31,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:31,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:31,598 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 17:41:31,604 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 17:41:31,623 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:41:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:41:31,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:41:31,623 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:41:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:41:31,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:41:31,624 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:41:31,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:41:31,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:41:31,624 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 17:41:31,661 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:41:31,663 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:41:31,734 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:41:31,746 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:41:31,747 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:41:31,748 INFO L201 PluginConnector]: Adding new model figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:41:31 BoogieIcfgContainer [2023-10-12 17:41:31,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:41:31,749 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:41:31,749 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:41:31,752 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:41:31,753 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:41:31,753 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:31" (1/2) ... [2023-10-12 17:41:31,754 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79380ed9 and model type figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:41:31, skipping insertion in model container [2023-10-12 17:41:31,754 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:41:31,754 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:41:31" (2/2) ... [2023-10-12 17:41:31,756 INFO L332 chiAutomizerObserver]: Analyzing ICFG figure3.wvr.bpl [2023-10-12 17:41:31,804 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:41:31,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 25 transitions, 66 flow [2023-10-12 17:41:31,849 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-10-12 17:41:31,850 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:41:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2023-10-12 17:41:31,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 25 transitions, 66 flow [2023-10-12 17:41:31,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2023-10-12 17:41:31,857 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:41:31,866 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 21 transitions, 54 flow [2023-10-12 17:41:31,868 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 21 transitions, 54 flow [2023-10-12 17:41:31,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 54 flow [2023-10-12 17:41:31,873 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-10-12 17:41:31,873 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:41:31,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2023-10-12 17:41:31,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-10-12 17:41:32,064 INFO L134 LiptonReduction]: Checked pairs total: 48 [2023-10-12 17:41:32,064 INFO L136 LiptonReduction]: Total number of compositions: 11 [2023-10-12 17:41:32,073 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:41:32,073 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:41:32,073 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:41:32,073 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:41:32,073 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:41:32,073 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:41:32,073 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:41:32,073 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == RabinPetriNetCegarLoop ======== [2023-10-12 17:41:32,074 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:41:32,076 ERROR L47 etriNetUnfolderRabin]: [1:1A:[80] $Ultimate##0-->L47: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_20 0) (< 0 v_C_16) (= v_N2_12 v_N1_12)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} AuxVars[] AssignedVars[][10], 2:2A:[64] L47-->L20-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][0]][3:3A:[74] L20-1-->L20-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter_25 v_C_10) v_counter_24) (< v_i1_13 v_N1_8)) InVars {counter=v_counter_25, i1=v_i1_13, C=v_C_10, N1=v_N1_8} OutVars{counter=v_counter_24, i1=v_i1_12, C=v_C_10, N1=v_N1_8} AuxVars[] AssignedVars[counter, i1][4]] [2023-10-12 17:41:32,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:41:32,077 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:41:32,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:41:32,078 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:41:32,079 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:41:32,081 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:41:32,082 ERROR L47 etriNetUnfolderRabin]: [1:1A:[80] $Ultimate##0-->L47: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_20 0) (< 0 v_C_16) (= v_N2_12 v_N1_12)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} AuxVars[] AssignedVars[][10], 2:2A:[64] L47-->L20-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][0]][3:3A:[74] L20-1-->L20-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter_25 v_C_10) v_counter_24) (< v_i1_13 v_N1_8)) InVars {counter=v_counter_25, i1=v_i1_13, C=v_C_10, N1=v_N1_8} OutVars{counter=v_counter_24, i1=v_i1_12, C=v_C_10, N1=v_N1_8} AuxVars[] AssignedVars[counter, i1][4]] [2023-10-12 17:41:32,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:41:32,082 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:41:32,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:41:32,082 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:41:32,086 INFO L748 eck$LassoCheckResult]: Stem: 32#[$Ultimate##0]true [80] $Ultimate##0-->L47: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_20 0) (< 0 v_C_16) (= v_N2_12 v_N1_12)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} AuxVars[] AssignedVars[] 34#[L47]true [64] L47-->L20-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 36#[L47-1, L20-1]true [2023-10-12 17:41:32,086 INFO L750 eck$LassoCheckResult]: Loop: 36#[L47-1, L20-1]true [74] L20-1-->L20-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter_25 v_C_10) v_counter_24) (< v_i1_13 v_N1_8)) InVars {counter=v_counter_25, i1=v_i1_13, C=v_C_10, N1=v_N1_8} OutVars{counter=v_counter_24, i1=v_i1_12, C=v_C_10, N1=v_N1_8} AuxVars[] AssignedVars[counter, i1] 36#[L47-1, L20-1]true [2023-10-12 17:41:32,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash 3505, now seen corresponding path program 1 times [2023-10-12 17:41:32,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:32,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146185085] [2023-10-12 17:41:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:32,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:32,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:32,190 INFO L85 PathProgramCache]: Analyzing trace with hash 105, now seen corresponding path program 1 times [2023-10-12 17:41:32,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:32,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43748359] [2023-10-12 17:41:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:32,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:32,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:32,213 INFO L85 PathProgramCache]: Analyzing trace with hash 108729, now seen corresponding path program 1 times [2023-10-12 17:41:32,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292426899] [2023-10-12 17:41:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:32,259 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:32,260 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:32,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:32,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:32,260 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:41:32,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:32,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:32,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure3.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:41:32,261 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:32,261 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:32,270 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 17:41:32,278 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 17:41:32,320 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:32,320 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:41:32,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:32,322 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 17:41:32,323 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 17:41:32,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:41:32,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:32,344 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:41:32,345 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {counter=0, C=0} Honda state: {counter=0, C=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:41:32,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:41:32,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:32,354 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 17:41:32,356 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 17:41:32,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:41:32,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:32,381 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 17:41:32,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:32,383 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 17:41:32,393 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 17:41:32,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:41:32,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:32,503 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:41:32,506 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 17:41:32,508 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:32,508 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:32,508 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:32,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:32,508 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:41:32,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:32,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:32,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure3.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:41:32,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:32,508 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:32,509 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 17:41:32,513 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:41:32,538 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:32,541 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:41:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:32,543 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 17:41:32,544 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 17:41:32,546 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 17:41:32,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:41:32,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:41:32,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:41:32,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:41:32,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:41:32,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:41:32,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:41:32,565 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:41:32,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-10-12 17:41:32,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:32,568 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 17:41:32,569 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 17:41:32,572 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 17:41:32,578 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:41:32,578 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:41:32,578 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:41:32,578 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:41:32,578 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:41:32,579 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:41:32,579 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:41:32,588 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:41:32,591 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:41:32,591 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:41:32,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:32,593 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 17:41:32,594 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 17:41:32,629 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:41:32,629 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:41:32,630 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:41:32,630 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N1, i1) = 1*N1 - 1*i1 Supporting invariants [] [2023-10-12 17:41:32,633 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 17:41:32,635 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:41:32,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:32,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:41:32,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:32,677 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:41:32,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:32,677 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 17:41:32,706 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 17:41:32,772 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 17:41:32,776 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 17:41:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2023-10-12 17:41:32,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 144 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:41:32,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:32,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 144 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:41:32,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:32,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 144 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:41:32,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:32,780 INFO L430 stractBuchiCegarLoop]: Abstraction has has 20 places, 44 transitions, 224 flow [2023-10-12 17:41:32,780 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:41:32,780 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 20 places, 44 transitions, 224 flow [2023-10-12 17:41:32,782 ERROR L47 etriNetUnfolderRabin]: [1:1A:[80] $Ultimate##0-->L47: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_20 0) (< 0 v_C_16) (= v_N2_12 v_N1_12)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} AuxVars[] AssignedVars[][40], 2:2A:[64] L47-->L20-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][0], 4:3A:[67] L47-1-->L31-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1][14]][5:4A:[77] L31-1-->L31-1: Formula: (and (= v_i2_14 (+ v_i2_15 1)) (= v_counter_31 (+ v_counter_30 v_C_12)) (< v_i2_15 v_N2_8) (< 0 v_counter_31)) InVars {counter=v_counter_31, i2=v_i2_15, N2=v_N2_8, C=v_C_12} OutVars{counter=v_counter_30, i2=v_i2_14, N2=v_N2_8, C=v_C_12} AuxVars[] AssignedVars[counter, i2][23]] [2023-10-12 17:41:32,782 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:41:32,782 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-10-12 17:41:32,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:41:32,782 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:41:32,783 INFO L748 eck$LassoCheckResult]: Stem: 32#[$Ultimate##0]true [80] $Ultimate##0-->L47: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_20 0) (< 0 v_C_16) (= v_N2_12 v_N1_12)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_20, N2=v_N2_12, C=v_C_16, N1=v_N1_12} AuxVars[] AssignedVars[] 34#[L47]true [64] L47-->L20-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 36#[L47-1, L20-1]true [67] L47-1-->L31-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 71#[L20-1, L31-1, L48]true [2023-10-12 17:41:32,783 INFO L750 eck$LassoCheckResult]: Loop: 71#[L20-1, L31-1, L48]true [77] L31-1-->L31-1: Formula: (and (= v_i2_14 (+ v_i2_15 1)) (= v_counter_31 (+ v_counter_30 v_C_12)) (< v_i2_15 v_N2_8) (< 0 v_counter_31)) InVars {counter=v_counter_31, i2=v_i2_15, N2=v_N2_8, C=v_C_12} OutVars{counter=v_counter_30, i2=v_i2_14, N2=v_N2_8, C=v_C_12} AuxVars[] AssignedVars[counter, i2] 71#[L20-1, L31-1, L48]true [2023-10-12 17:41:32,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash 108722, now seen corresponding path program 1 times [2023-10-12 17:41:32,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:32,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744834985] [2023-10-12 17:41:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:32,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:32,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:32,790 INFO L85 PathProgramCache]: Analyzing trace with hash 108, now seen corresponding path program 1 times [2023-10-12 17:41:32,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:32,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407253553] [2023-10-12 17:41:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:32,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:32,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash 3370459, now seen corresponding path program 1 times [2023-10-12 17:41:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:32,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225214879] [2023-10-12 17:41:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:32,836 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 17:41:32,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:41:32,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225214879] [2023-10-12 17:41:32,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225214879] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:41:32,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:41:32,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:41:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65358511] [2023-10-12 17:41:32,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:41:32,856 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:32,856 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:32,857 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:32,857 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:32,857 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:41:32,857 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:32,857 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:32,857 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure3.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:41:32,857 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:32,857 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:32,858 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 17:41:32,862 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 17:41:32,882 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:32,883 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:41:32,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:32,884 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 17:41:32,886 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 17:41:32,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:41:32,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:32,922 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 17:41:32,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:32,923 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 17:41:32,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:41:32,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:32,972 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 17:41:33,021 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:41:33,026 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 17:41:33,026 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:33,027 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:33,027 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:33,027 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:33,027 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:41:33,027 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:33,027 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:33,027 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:33,027 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure3.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:41:33,027 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:33,027 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:33,028 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 17:41:33,035 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 17:41:33,067 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:33,067 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:41:33,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:33,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:33,068 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 17:41:33,081 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 17:41:33,085 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 17:41:33,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:41:33,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:41:33,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:41:33,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:41:33,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:41:33,089 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:41:33,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:41:33,104 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:41:33,112 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:41:33,112 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:41:33,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:33,117 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 17:41:33,118 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 17:41:33,119 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:41:33,119 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:41:33,119 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:41:33,119 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N2, i2) = 1*N2 - 1*i2 Supporting invariants [] [2023-10-12 17:41:33,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-10-12 17:41:33,134 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:41:33,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:33,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:41:33,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:33,165 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:41:33,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:33,167 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 17:41:33,167 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 17:41:33,214 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 17:41:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 17:41:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2023-10-12 17:41:33,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 144 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:41:33,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:33,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 144 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:41:33,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:33,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 144 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:41:33,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:33,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:41:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:41:33,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:41:33,218 INFO L103 encePairwiseOnDemand]: Start rabinDifferencePairwiseOnDemand. First operand has 24 places, 176 transitions, 1248 flow. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 17:41:33,218 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:41:33,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:41:33,239 INFO L124 PetriNetUnfolderBase]: 22/48 cut-off events. [2023-10-12 17:41:33,239 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-10-12 17:41:33,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 48 events. 22/48 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 99 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 132. Up to 38 conditions per place. [2023-10-12 17:41:33,241 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 32 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-10-12 17:41:33,241 INFO L145 encePairwiseOnDemand]: Finished rabinDifferencePairwiseOnDemand. Result has 23 places, 36 transitions, 321 flow [2023-10-12 17:41:33,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:41:33,242 INFO L430 stractBuchiCegarLoop]: Abstraction has has 23 places, 36 transitions, 321 flow [2023-10-12 17:41:33,242 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:41:33,242 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 23 places, 36 transitions, 321 flow [2023-10-12 17:41:33,247 INFO L124 PetriNetUnfolderBase]: 22/48 cut-off events. [2023-10-12 17:41:33,247 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-10-12 17:41:33,247 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is empty [2023-10-12 17:41:33,251 INFO L201 PluginConnector]: Adding new model figure3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:41:33 BoogieIcfgContainer [2023-10-12 17:41:33,251 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:41:33,252 INFO L158 Benchmark]: Toolchain (without parser) took 1709.31ms. Allocated memory was 188.7MB in the beginning and 267.4MB in the end (delta: 78.6MB). Free memory was 137.4MB in the beginning and 179.7MB in the end (delta: -42.3MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-10-12 17:41:33,252 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.17ms. Allocated memory is still 188.7MB. Free memory was 138.5MB in the beginning and 138.4MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:41:33,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.21ms. Allocated memory is still 188.7MB. Free memory was 137.3MB in the beginning and 135.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:41:33,253 INFO L158 Benchmark]: Boogie Preprocessor took 13.98ms. Allocated memory is still 188.7MB. Free memory was 135.9MB in the beginning and 134.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:41:33,253 INFO L158 Benchmark]: RCFGBuilder took 171.02ms. Allocated memory is still 188.7MB. Free memory was 134.8MB in the beginning and 125.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:41:33,254 INFO L158 Benchmark]: BuchiAutomizer took 1502.30ms. Allocated memory was 188.7MB in the beginning and 267.4MB in the end (delta: 78.6MB). Free memory was 125.0MB in the beginning and 179.7MB in the end (delta: -54.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-10-12 17:41:33,255 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 0.17ms. Allocated memory is still 188.7MB. Free memory was 138.5MB in the beginning and 138.4MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.21ms. Allocated memory is still 188.7MB. Free memory was 137.3MB in the beginning and 135.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.98ms. Allocated memory is still 188.7MB. Free memory was 135.9MB in the beginning and 134.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 171.02ms. Allocated memory is still 188.7MB. Free memory was 134.8MB in the beginning and 125.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 1502.30ms. Allocated memory was 188.7MB in the beginning and 267.4MB in the end (delta: 78.6MB). Free memory was 125.0MB in the beginning and 179.7MB in the end (delta: -54.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 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 -1 * i2 + N2 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 64 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s 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, 26 PlacesBefore, 16 PlacesAfterwards, 21 TransitionsBefore, 11 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 3 FixpointIterations, 7 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 48 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48, independent: 48, independent conditional: 0, independent unconditional: 48, 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: 30, independent: 30, independent conditional: 0, independent unconditional: 30, 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: 30, independent: 30, independent conditional: 0, independent unconditional: 30, 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: 48, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , 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 17:41:33,272 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 17:41:33,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:41:33,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...