/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/difference-det.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:41:17,894 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:41:17,952 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 17:41:17,971 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:41:17,972 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:41:17,972 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:41:17,973 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:41:17,973 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:41:17,974 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:41:17,974 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:41:17,974 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:41:17,975 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:41:17,975 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:41:17,975 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:41:17,976 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:41:17,976 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:41:17,976 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:41:17,976 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:41:17,977 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:41:17,977 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:41:17,977 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:41:17,978 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:41:17,978 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:41:17,978 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:41:17,978 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:41:17,979 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:41:17,979 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:41:17,979 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:41:17,979 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:41:17,980 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:41:17,980 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:41:17,980 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:41:17,980 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:41:17,981 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:41:17,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> RABIN_PETRI_NET [2023-10-12 17:41:18,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:41:18,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:41:18,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:41:18,199 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:41:18,199 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:41:18,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl [2023-10-12 17:41:18,201 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl' [2023-10-12 17:41:18,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:41:18,231 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:41:18,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:41:18,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:41:18,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:41:18,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,259 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:41:18,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:41:18,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:41:18,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:41:18,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:41:18,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:41:18,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:41:18,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:41:18,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:41:18,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/1) ... [2023-10-12 17:41:18,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:18,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:18,314 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 17:41:18,318 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 17:41:18,343 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:41:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:41:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:41:18,344 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:41:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:41:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:41:18,344 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:41:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:41:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:41:18,345 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:41:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:41:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:41:18,345 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2023-10-12 17:41:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-10-12 17:41:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-10-12 17:41:18,346 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 17:41:18,385 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:41:18,387 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:41:18,473 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:41:18,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:41:18,494 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:41:18,496 INFO L201 PluginConnector]: Adding new model difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:41:18 BoogieIcfgContainer [2023-10-12 17:41:18,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:41:18,497 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:41:18,497 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:41:18,500 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:41:18,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:41:18,501 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:41:18" (1/2) ... [2023-10-12 17:41:18,509 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@96285f3 and model type difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:41:18, skipping insertion in model container [2023-10-12 17:41:18,509 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:41:18,509 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:41:18" (2/2) ... [2023-10-12 17:41:18,511 INFO L332 chiAutomizerObserver]: Analyzing ICFG difference-det.wvr.bpl [2023-10-12 17:41:18,603 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-10-12 17:41:18,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 44 transitions, 120 flow [2023-10-12 17:41:18,646 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-10-12 17:41:18,646 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:41:18,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-10-12 17:41:18,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 44 transitions, 120 flow [2023-10-12 17:41:18,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 36 transitions, 96 flow [2023-10-12 17:41:18,658 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:41:18,670 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 36 transitions, 96 flow [2023-10-12 17:41:18,672 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 36 transitions, 96 flow [2023-10-12 17:41:18,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 36 transitions, 96 flow [2023-10-12 17:41:18,680 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-10-12 17:41:18,681 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:41:18,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-10-12 17:41:18,682 INFO L119 LiptonReduction]: Number of co-enabled transitions 288 [2023-10-12 17:41:19,018 INFO L134 LiptonReduction]: Checked pairs total: 279 [2023-10-12 17:41:19,019 INFO L136 LiptonReduction]: Total number of compositions: 18 [2023-10-12 17:41:19,030 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:41:19,030 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:41:19,030 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:41:19,030 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:41:19,031 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:41:19,031 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:41:19,031 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:41:19,031 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == RabinPetriNetCegarLoop ======== [2023-10-12 17:41:19,031 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:41:19,034 ERROR L47 etriNetUnfolderRabin]: [1:1A:[145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[][18], 2:2A:[114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][3]][3:3A:[134] L24-1-->L24-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_27 1) v_counter1_26) (< v_i1_13 v_N1_8)) InVars {counter1=v_counter1_27, i1=v_i1_13, N1=v_N1_8} OutVars{counter1=v_counter1_26, i1=v_i1_12, N1=v_N1_8} AuxVars[] AssignedVars[counter1, i1][8]] [2023-10-12 17:41:19,036 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:41:19,036 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:41:19,036 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:41:19,036 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:41:19,039 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:41:19,039 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 28 places, 19 transitions, 62 flow [2023-10-12 17:41:19,040 ERROR L47 etriNetUnfolderRabin]: [1:1A:[145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[][18], 2:2A:[114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][3]][3:3A:[134] L24-1-->L24-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_27 1) v_counter1_26) (< v_i1_13 v_N1_8)) InVars {counter1=v_counter1_27, i1=v_i1_13, N1=v_N1_8} OutVars{counter1=v_counter1_26, i1=v_i1_12, N1=v_N1_8} AuxVars[] AssignedVars[counter1, i1][8]] [2023-10-12 17:41:19,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:41:19,040 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:41:19,040 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:41:19,040 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:41:19,045 INFO L748 eck$LassoCheckResult]: Stem: 53#[$Ultimate##0]true [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]true [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L77-1, L24-1]true [2023-10-12 17:41:19,045 INFO L750 eck$LassoCheckResult]: Loop: 57#[L77-1, L24-1]true [134] L24-1-->L24-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_27 1) v_counter1_26) (< v_i1_13 v_N1_8)) InVars {counter1=v_counter1_27, i1=v_i1_13, N1=v_N1_8} OutVars{counter1=v_counter1_26, i1=v_i1_12, N1=v_N1_8} AuxVars[] AssignedVars[counter1, i1] 57#[L77-1, L24-1]true [2023-10-12 17:41:19,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:19,049 INFO L85 PathProgramCache]: Analyzing trace with hash 5570, now seen corresponding path program 1 times [2023-10-12 17:41:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:19,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245187291] [2023-10-12 17:41:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:19,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:19,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash 165, now seen corresponding path program 1 times [2023-10-12 17:41:19,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:19,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275773276] [2023-10-12 17:41:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:19,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:19,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:19,193 INFO L85 PathProgramCache]: Analyzing trace with hash 172804, now seen corresponding path program 1 times [2023-10-12 17:41:19,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:19,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543667377] [2023-10-12 17:41:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:19,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:19,251 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:19,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:19,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:19,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:19,252 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:41:19,253 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:19,253 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:19,253 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:19,253 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:41:19,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:19,253 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:19,265 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 17:41:19,276 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 17:41:19,307 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:19,308 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:41:19,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:19,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:19,312 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 17:41:19,316 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 17:41:19,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:41:19,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:19,328 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 17:41:19,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:19,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:19,330 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 17:41:19,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:41:19,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:19,365 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 17:41:19,479 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:41:19,481 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 17:41:19,482 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:19,482 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:19,482 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:19,482 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:19,482 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:41:19,483 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:19,483 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:19,483 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:19,483 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:41:19,483 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:19,483 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:19,484 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 17:41:19,496 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 17:41:19,523 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:19,527 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:41:19,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:19,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:19,529 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 17:41:19,542 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 17:41:19,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:41:19,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:41:19,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:41:19,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:41:19,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:41:19,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:41:19,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:41:19,558 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 17:41:19,569 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:41:19,575 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:41:19,575 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:41:19,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:19,589 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 17:41:19,610 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:41:19,610 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:41:19,610 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:41:19,611 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N1) = -1*i1 + 1*N1 Supporting invariants [] [2023-10-12 17:41:19,614 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 17:41:19,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-10-12 17:41:19,618 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:41:19,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:19,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:41:19,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:19,683 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:41:19,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:19,684 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 17:41:19,726 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 17:41:19,836 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 17:41:19,840 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 17:41:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-10-12 17:41:19,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:41:19,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:19,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:41:19,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:19,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:41:19,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:19,851 INFO L430 stractBuchiCegarLoop]: Abstraction has has 32 places, 76 transitions, 400 flow [2023-10-12 17:41:19,851 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:41:19,851 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 32 places, 76 transitions, 400 flow [2023-10-12 17:41:19,853 ERROR L47 etriNetUnfolderRabin]: [1:1A:[145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[][73], 2:2A:[114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][13], 4:3A:[117] L77-1-->L35-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1][22]][5:4A:[132] L35-1-->L35-1: Formula: (and (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23) (< v_i2_17 v_N2_6)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_6} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_6} AuxVars[] AssignedVars[counter1, i2][44]] [2023-10-12 17:41:19,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:41:19,853 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-10-12 17:41:19,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:41:19,854 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:41:19,854 INFO L748 eck$LassoCheckResult]: Stem: 53#[$Ultimate##0]true [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]true [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L77-1, L24-1]true [117] L77-1-->L35-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 92#[L24-1, L78, L35-1]true [2023-10-12 17:41:19,854 INFO L750 eck$LassoCheckResult]: Loop: 92#[L24-1, L78, L35-1]true [132] L35-1-->L35-1: Formula: (and (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23) (< v_i2_17 v_N2_6)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_6} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_6} AuxVars[] AssignedVars[counter1, i2] 92#[L24-1, L78, L35-1]true [2023-10-12 17:41:19,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash 172787, now seen corresponding path program 1 times [2023-10-12 17:41:19,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:19,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782335199] [2023-10-12 17:41:19,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:19,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:19,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash 163, now seen corresponding path program 1 times [2023-10-12 17:41:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:19,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582131446] [2023-10-12 17:41:19,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:19,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,896 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:19,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:19,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:19,906 INFO L85 PathProgramCache]: Analyzing trace with hash 5356529, now seen corresponding path program 1 times [2023-10-12 17:41:19,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:19,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736416210] [2023-10-12 17:41:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:19,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:19,951 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 17:41:19,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:41:19,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736416210] [2023-10-12 17:41:19,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736416210] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:41:19,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:41:19,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:41:19,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892973670] [2023-10-12 17:41:19,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:41:19,982 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:19,983 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:19,983 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:19,983 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:19,983 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:41:19,983 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:19,983 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:19,984 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:19,984 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:41:19,984 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:19,984 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:19,985 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 17:41:19,990 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 17:41:20,017 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:20,018 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:41:20,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:20,021 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 17:41:20,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:41:20,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:20,038 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 17:41:20,055 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 17:41:20,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:20,057 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 17:41:20,060 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 17:41:20,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:41:20,061 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:20,164 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:41:20,169 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 17:41:20,169 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:20,169 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:20,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:20,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:20,170 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:41:20,170 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,170 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:20,170 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:20,170 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:41:20,170 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:20,170 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:20,171 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 17:41:20,182 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 17:41:20,214 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:20,214 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:41:20,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:20,216 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 17:41:20,219 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 17:41:20,220 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 17:41:20,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:41:20,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:41:20,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:41:20,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:41:20,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:41:20,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:41:20,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:41:20,249 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:41:20,251 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:41:20,251 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:41:20,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:20,259 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 17:41:20,260 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 17:41:20,261 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:41:20,261 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:41:20,262 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:41:20,262 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N2) = -1*i2 + 1*N2 Supporting invariants [] [2023-10-12 17:41:20,268 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 17:41:20,269 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:41:20,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:20,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:41:20,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:20,305 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:41:20,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:20,308 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 17:41:20,309 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 17:41:20,426 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 17:41:20,427 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 17:41:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-10-12 17:41:20,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:41:20,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:20,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:41:20,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:20,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:41:20,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:20,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:41:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:41:20,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:41:20,435 INFO L103 encePairwiseOnDemand]: Start rabinDifferencePairwiseOnDemand. First operand has 36 places, 304 transitions, 2208 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 17:41:20,435 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:41:20,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:41:20,564 INFO L124 PetriNetUnfolderBase]: 336/461 cut-off events. [2023-10-12 17:41:20,564 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-10-12 17:41:20,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 461 events. 336/461 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1151 event pairs, 77 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 1706. Up to 409 conditions per place. [2023-10-12 17:41:20,575 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 60 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-10-12 17:41:20,575 INFO L145 encePairwiseOnDemand]: Finished rabinDifferencePairwiseOnDemand. Result has 35 places, 64 transitions, 581 flow [2023-10-12 17:41:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:41:20,577 INFO L430 stractBuchiCegarLoop]: Abstraction has has 35 places, 64 transitions, 581 flow [2023-10-12 17:41:20,577 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:41:20,577 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 35 places, 64 transitions, 581 flow [2023-10-12 17:41:20,580 ERROR L47 etriNetUnfolderRabin]: [1:1A:[145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[][0], 2:2A:[114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][1], 3:3A:[117] L77-1-->L35-1: 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][2], 13:4A:[120] L78-->L47-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0][8]][14:5A:[137] L47-1-->L47-1: Formula: (and (= (+ v_counter2_25 1) v_counter2_24) (< v_j1_15 v_M1_8) (= v_j1_14 (+ v_j1_15 1))) InVars {counter2=v_counter2_25, j1=v_j1_15, M1=v_M1_8} OutVars{counter2=v_counter2_24, j1=v_j1_14, M1=v_M1_8} AuxVars[] AssignedVars[counter2, j1][23]] [2023-10-12 17:41:20,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:41:20,581 INFO L124 PetriNetUnfolderBase]: 4/13 cut-off events. [2023-10-12 17:41:20,581 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-10-12 17:41:20,582 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:41:20,582 INFO L748 eck$LassoCheckResult]: Stem: 53#[$Ultimate##0]true [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]true [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L77-1, L24-1]true [117] L77-1-->L35-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 92#[L24-1, L78, L35-1]true [120] L78-->L47-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 127#[L47-1, L79, L24-1, L35-1]true [2023-10-12 17:41:20,582 INFO L750 eck$LassoCheckResult]: Loop: 127#[L47-1, L79, L24-1, L35-1]true [137] L47-1-->L47-1: Formula: (and (= (+ v_counter2_25 1) v_counter2_24) (< v_j1_15 v_M1_8) (= v_j1_14 (+ v_j1_15 1))) InVars {counter2=v_counter2_25, j1=v_j1_15, M1=v_M1_8} OutVars{counter2=v_counter2_24, j1=v_j1_14, M1=v_M1_8} AuxVars[] AssignedVars[counter2, j1] 127#[L47-1, L79, L24-1, L35-1]true [2023-10-12 17:41:20,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 5356517, now seen corresponding path program 1 times [2023-10-12 17:41:20,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:20,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121683719] [2023-10-12 17:41:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:20,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:20,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:20,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash 168, now seen corresponding path program 1 times [2023-10-12 17:41:20,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:20,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117346884] [2023-10-12 17:41:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:20,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:20,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:20,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:20,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:20,624 INFO L85 PathProgramCache]: Analyzing trace with hash 166052164, now seen corresponding path program 1 times [2023-10-12 17:41:20,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:20,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704990363] [2023-10-12 17:41:20,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:20,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:20,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:20,645 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:20,677 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:20,677 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:20,677 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:20,677 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:20,677 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:41:20,677 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,677 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:20,678 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:20,678 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:41:20,678 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:20,678 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:20,678 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 17:41:20,684 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 17:41:20,712 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:20,712 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:41:20,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:20,713 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 17:41:20,716 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 17:41:20,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:41:20,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:20,744 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 17:41:20,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:20,747 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 17:41:20,749 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 17:41:20,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:41:20,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:20,858 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:41:20,861 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 17:41:20,861 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:20,861 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:20,861 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:20,861 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:20,861 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:41:20,861 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,861 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:20,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:20,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:41:20,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:20,862 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:20,862 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 17:41:20,867 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:41:20,902 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:20,902 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:41:20,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:20,904 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 17:41:20,918 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 17:41:20,918 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 17:41:20,925 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:41:20,925 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:41:20,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:41:20,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:41:20,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:41:20,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:41:20,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:41:20,944 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:41:20,946 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:41:20,947 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:41:20,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:20,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:20,953 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:41:20,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-10-12 17:41:20,963 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:41:20,963 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:41:20,963 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:41:20,963 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j1, M1) = -1*j1 + 1*M1 Supporting invariants [] [2023-10-12 17:41:20,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-10-12 17:41:20,974 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:41:20,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:21,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:41:21,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:21,012 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:41:21,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:21,013 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 17:41:21,013 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 17:41:21,100 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 17:41:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) 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 17:41:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-10-12 17:41:21,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:41:21,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:21,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:41:21,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:21,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:41:21,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:21,102 INFO L430 stractBuchiCegarLoop]: Abstraction has has 39 places, 256 transitions, 2836 flow [2023-10-12 17:41:21,102 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:41:21,103 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 39 places, 256 transitions, 2836 flow [2023-10-12 17:41:21,111 ERROR L47 etriNetUnfolderRabin]: [1:1A:[145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[][2], 2:2A:[114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][6], 3:3A:[117] L77-1-->L35-1: 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][10], 13:4A:[120] L78-->L47-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0][34], 62:5A:[123] L79-->L58-1: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2][91]][65:6A:[139] L58-1-->L58-1: Formula: (and (= v_j2_16 (+ v_j2_17 1)) (= (+ v_counter2_28 1) v_counter2_29) (< 0 v_counter2_29) (< v_j2_17 v_M2_6)) InVars {counter2=v_counter2_29, j2=v_j2_17, M2=v_M2_6} OutVars{counter2=v_counter2_28, j2=v_j2_16, M2=v_M2_6} AuxVars[] AssignedVars[counter2, j2][168]] [2023-10-12 17:41:21,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:41:21,112 INFO L124 PetriNetUnfolderBase]: 41/64 cut-off events. [2023-10-12 17:41:21,112 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-10-12 17:41:21,112 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:41:21,112 INFO L748 eck$LassoCheckResult]: Stem: 53#[$Ultimate##0]true [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]true [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L77-1, L24-1]true [117] L77-1-->L35-1: 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] 92#[L24-1, L78, L35-1]true [120] L78-->L47-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 127#[L47-1, L79, L24-1, L35-1]true [123] L79-->L58-1: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2] 165#[L58-1, L47-1, L24-1, L35-1, L80]true [2023-10-12 17:41:21,112 INFO L750 eck$LassoCheckResult]: Loop: 165#[L58-1, L47-1, L24-1, L35-1, L80]true [139] L58-1-->L58-1: Formula: (and (= v_j2_16 (+ v_j2_17 1)) (= (+ v_counter2_28 1) v_counter2_29) (< 0 v_counter2_29) (< v_j2_17 v_M2_6)) InVars {counter2=v_counter2_29, j2=v_j2_17, M2=v_M2_6} OutVars{counter2=v_counter2_28, j2=v_j2_16, M2=v_M2_6} AuxVars[] AssignedVars[counter2, j2] 165#[L58-1, L47-1, L24-1, L35-1, L80]true [2023-10-12 17:41:21,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash 166052150, now seen corresponding path program 1 times [2023-10-12 17:41:21,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:21,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418333009] [2023-10-12 17:41:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:21,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:21,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:21,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:21,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash 170, now seen corresponding path program 1 times [2023-10-12 17:41:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827579300] [2023-10-12 17:41:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:21,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:41:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:41:21,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:41:21,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash 852649493, now seen corresponding path program 1 times [2023-10-12 17:41:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:41:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783149642] [2023-10-12 17:41:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:41:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:41:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:21,185 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 17:41:21,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:41:21,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783149642] [2023-10-12 17:41:21,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783149642] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:41:21,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:41:21,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:41:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127279922] [2023-10-12 17:41:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:41:21,208 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:21,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:21,209 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:21,209 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:21,209 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:41:21,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:21,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:21,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:21,209 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:41:21,209 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:21,209 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:21,210 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 17:41:21,216 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 17:41:21,240 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:21,241 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:41:21,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:21,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:21,242 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 17:41:21,245 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 17:41:21,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:41:21,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:21,277 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 17:41:21,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:21,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:21,279 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 17:41:21,281 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 17:41:21,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:41:21,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:41:21,394 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:41:21,397 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 17:41:21,397 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:41:21,398 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:41:21,398 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:41:21,398 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:41:21,398 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:41:21,398 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:21,398 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:41:21,398 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:41:21,398 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:41:21,398 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:41:21,398 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:41:21,399 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 17:41:21,412 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 17:41:21,442 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:41:21,442 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:41:21,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:21,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:21,445 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 17:41:21,445 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 17:41:21,447 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 17:41:21,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:41:21,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:41:21,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:41:21,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:41:21,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:41:21,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:41:21,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:41:21,477 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:41:21,482 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:41:21,482 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:41:21,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:41:21,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:41:21,485 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 17:41:21,486 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 17:41:21,488 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:41:21,488 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:41:21,488 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:41:21,488 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j2, M2) = -1*j2 + 1*M2 Supporting invariants [] [2023-10-12 17:41:21,492 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 17:41:21,493 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:41:21,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:41:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:21,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:41:21,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:41:21,531 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:41:21,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:41:21,532 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 17:41:21,532 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 17:41:21,622 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 17:41:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 17:41:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-10-12 17:41:21,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:41:21,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:21,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 6 letters. Loop has 1 letters. [2023-10-12 17:41:21,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:21,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 248 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:41:21,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:41:21,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:41:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:41:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:41:21,628 INFO L103 encePairwiseOnDemand]: Start rabinDifferencePairwiseOnDemand. First operand has 43 places, 1024 transitions, 13392 flow. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 17:41:21,628 INFO L124 encePairwiseOnDemand]: Subtrahend is not yet constructed. Will not use universal subtrahend loopers optimization. [2023-10-12 17:41:21,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-10-12 17:41:21,652 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 17:41:21,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-10-12 17:41:21,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-10-12 17:41:21,697 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 17:41:21,879 INFO L124 PetriNetUnfolderBase]: 878/1193 cut-off events. [2023-10-12 17:41:21,879 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2023-10-12 17:41:21,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8618 conditions, 1193 events. 878/1193 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3813 event pairs, 5 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 6123. Up to 1087 conditions per place. [2023-10-12 17:41:21,896 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 235 selfloop transitions, 13 changer transitions 0/248 dead transitions. [2023-10-12 17:41:21,896 INFO L145 encePairwiseOnDemand]: Finished rabinDifferencePairwiseOnDemand. Result has 43 places, 248 transitions, 3628 flow [2023-10-12 17:41:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:41:21,897 INFO L430 stractBuchiCegarLoop]: Abstraction has has 43 places, 248 transitions, 3628 flow [2023-10-12 17:41:21,897 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:41:21,897 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 43 places, 248 transitions, 3628 flow [2023-10-12 17:41:22,007 INFO L124 PetriNetUnfolderBase]: 878/1193 cut-off events. [2023-10-12 17:41:22,007 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2023-10-12 17:41:22,007 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is empty [2023-10-12 17:41:22,013 INFO L201 PluginConnector]: Adding new model difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:41:22 BoogieIcfgContainer [2023-10-12 17:41:22,013 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:41:22,015 INFO L158 Benchmark]: Toolchain (without parser) took 3782.71ms. Allocated memory was 209.7MB in the beginning and 252.7MB in the end (delta: 43.0MB). Free memory was 164.7MB in the beginning and 103.2MB in the end (delta: 61.5MB). Peak memory consumption was 124.0MB. Max. memory is 8.0GB. [2023-10-12 17:41:22,018 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.26ms. Allocated memory is still 209.7MB. Free memory is still 166.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:41:22,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.73ms. Allocated memory is still 209.7MB. Free memory was 164.7MB in the beginning and 163.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:41:22,021 INFO L158 Benchmark]: Boogie Preprocessor took 21.58ms. Allocated memory is still 209.7MB. Free memory was 163.1MB in the beginning and 162.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:41:22,022 INFO L158 Benchmark]: RCFGBuilder took 212.74ms. Allocated memory is still 209.7MB. Free memory was 162.0MB in the beginning and 150.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:41:22,022 INFO L158 Benchmark]: BuchiAutomizer took 3516.13ms. Allocated memory was 209.7MB in the beginning and 252.7MB in the end (delta: 43.0MB). Free memory was 150.9MB in the beginning and 103.2MB in the end (delta: 47.7MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. [2023-10-12 17:41:22,023 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 0.26ms. Allocated memory is still 209.7MB. Free memory is still 166.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.73ms. Allocated memory is still 209.7MB. Free memory was 164.7MB in the beginning and 163.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.58ms. Allocated memory is still 209.7MB. Free memory was 163.1MB in the beginning and 162.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 212.74ms. Allocated memory is still 209.7MB. Free memory was 162.0MB in the beginning and 150.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 3516.13ms. Allocated memory was 209.7MB in the beginning and 252.7MB in the end (delta: 43.0MB). Free memory was 150.9MB in the beginning and 103.2MB in the end (delta: 47.7MB). Peak memory consumption was 110.4MB. 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 6 terminating modules (2 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 -1 * i2 + N2 and consists of 4 locations. One deterministic module has affine ranking function -1 * j1 + M1 and consists of 4 locations. One deterministic module has affine ranking function -1 * j2 + M2 and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:0. Analysis of lassos took 1.7s. Construction of modules took 0.3s. Büchi inclusion checks took 0.7s. 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: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 488 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 484 mSDsluCounter, 340 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 108 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 430 IncrementalHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 232 mSDtfsCounter, 430 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 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: sat Degree: 0 Time: 82ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 45 PlacesBefore, 28 PlacesAfterwards, 36 TransitionsBefore, 19 TransitionsAfterwards, 288 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 18 TotalNumberOfCompositions, 279 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 279, independent: 279, independent conditional: 0, independent unconditional: 279, 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: 162, independent: 162, independent conditional: 0, independent unconditional: 162, 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: 162, independent: 162, independent conditional: 0, independent unconditional: 162, 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: 279, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 162, unknown conditional: 0, unknown unconditional: 162] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, 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 17:41:22,040 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...