/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/parallel/misc-2-unrolled.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:38:27,806 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:38:27,867 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 17:38:27,883 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:38:27,884 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:38:27,884 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:38:27,885 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:38:27,885 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:38:27,885 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:38:27,886 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:38:27,886 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:38:27,886 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:38:27,886 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:38:27,887 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:38:27,887 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:38:27,887 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:38:27,887 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:38:27,888 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:38:27,888 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:38:27,888 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:38:27,888 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:38:27,901 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:38:27,901 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:38:27,901 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:38:27,902 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:38:27,902 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:38:27,902 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:38:27,902 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:38:27,902 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:38:27,903 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:38:27,903 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:38:27,903 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:38:27,903 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:38:27,904 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:38:27,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> RABIN_PETRI_NET [2023-10-12 17:38:28,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:38:28,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:38:28,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:38:28,130 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:38:28,133 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:38:28,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl [2023-10-12 17:38:28,134 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl' [2023-10-12 17:38:28,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:38:28,169 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:38:28,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:38:28,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:38:28,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:38:28,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,189 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:38:28,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:38:28,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:38:28,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:38:28,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:38:28,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:38:28,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:38:28,206 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:38:28,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:38:28,207 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/1) ... [2023-10-12 17:38:28,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:28,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:28,459 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 17:38:28,461 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 17:38:28,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:38:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:38:28,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:38:28,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:38:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:38:28,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:38:28,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:38:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:38:28,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:38:28,501 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 17:38:28,555 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:38:28,557 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:38:28,633 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:38:28,637 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:38:28,637 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:38:28,638 INFO L201 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:38:28 BoogieIcfgContainer [2023-10-12 17:38:28,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:38:28,646 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:38:28,646 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:38:28,651 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:38:28,651 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:38:28,651 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:28" (1/2) ... [2023-10-12 17:38:28,653 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a08fb47 and model type misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:38:28, skipping insertion in model container [2023-10-12 17:38:28,653 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:38:28,653 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:38:28" (2/2) ... [2023-10-12 17:38:28,654 INFO L332 chiAutomizerObserver]: Analyzing ICFG misc-2-unrolled.wvr.bpl [2023-10-12 17:38:28,706 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:38:28,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 70 flow [2023-10-12 17:38:28,739 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-10-12 17:38:28,739 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:38:28,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-10-12 17:38:28,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 70 flow [2023-10-12 17:38:28,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 58 flow [2023-10-12 17:38:28,747 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:38:28,756 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 23 transitions, 58 flow [2023-10-12 17:38:28,758 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 23 transitions, 58 flow [2023-10-12 17:38:28,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 58 flow [2023-10-12 17:38:28,764 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-10-12 17:38:28,764 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:38:28,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-10-12 17:38:28,765 INFO L119 LiptonReduction]: Number of co-enabled transitions 126 [2023-10-12 17:38:29,068 INFO L134 LiptonReduction]: Checked pairs total: 90 [2023-10-12 17:38:29,068 INFO L136 LiptonReduction]: Total number of compositions: 13 [2023-10-12 17:38:29,077 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:38:29,077 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:38:29,078 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:38:29,078 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:38:29,078 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:38:29,078 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:38:29,078 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:38:29,078 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == RabinPetriNetCegarLoop ======== [2023-10-12 17:38:29,078 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:38:29,081 ERROR L47 etriNetUnfolderRabin]: [1:1A:[46] $Ultimate##0-->L40: Formula: (and (= v_i1_7 v_pos_9) (= v_i2_7 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} OutVars{i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} AuxVars[] AssignedVars[][3], 2:2A:[68] L40-->L17: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][4]][3:3A:[86] L17-->L17: Formula: (and (= v_pos_93 v_pos_95) (= (+ 2 v_i1_33) v_i1_32) (< v_i1_33 (* v_N_23 2))) InVars {N=v_N_23, i1=v_i1_33, pos=v_pos_95} OutVars{N=v_N_23, i1=v_i1_32, pos=v_pos_93} AuxVars[] AssignedVars[i1, pos][10]] [2023-10-12 17:38:29,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:38:29,082 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:38:29,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:38:29,083 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:38:29,084 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:38:29,085 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 16 places, 11 transitions, 34 flow [2023-10-12 17:38:29,085 ERROR L47 etriNetUnfolderRabin]: [1:1A:[46] $Ultimate##0-->L40: Formula: (and (= v_i1_7 v_pos_9) (= v_i2_7 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} OutVars{i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} AuxVars[] AssignedVars[][3], 2:2A:[68] L40-->L17: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][4]][3:3A:[86] L17-->L17: Formula: (and (= v_pos_93 v_pos_95) (= (+ 2 v_i1_33) v_i1_32) (< v_i1_33 (* v_N_23 2))) InVars {N=v_N_23, i1=v_i1_33, pos=v_pos_95} OutVars{N=v_N_23, i1=v_i1_32, pos=v_pos_93} AuxVars[] AssignedVars[i1, pos][10]] [2023-10-12 17:38:29,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:38:29,085 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-10-12 17:38:29,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:38:29,086 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:38:29,088 INFO L748 eck$LassoCheckResult]: Stem: 34#[$Ultimate##0]true [46] $Ultimate##0-->L40: Formula: (and (= v_i1_7 v_pos_9) (= v_i2_7 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} OutVars{i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} AuxVars[] AssignedVars[] 36#[L40]true [68] L40-->L17: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 38#[L40-1, L17]true [2023-10-12 17:38:29,089 INFO L750 eck$LassoCheckResult]: Loop: 38#[L40-1, L17]true [86] L17-->L17: Formula: (and (= v_pos_93 v_pos_95) (= (+ 2 v_i1_33) v_i1_32) (< v_i1_33 (* v_N_23 2))) InVars {N=v_N_23, i1=v_i1_33, pos=v_pos_95} OutVars{N=v_N_23, i1=v_i1_32, pos=v_pos_93} AuxVars[] AssignedVars[i1, pos] 38#[L40-1, L17]true [2023-10-12 17:38:29,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:29,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2455, now seen corresponding path program 1 times [2023-10-12 17:38:29,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:29,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098336806] [2023-10-12 17:38:29,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:29,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:29,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:29,164 INFO L85 PathProgramCache]: Analyzing trace with hash 117, now seen corresponding path program 1 times [2023-10-12 17:38:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:29,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207563193] [2023-10-12 17:38:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:29,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:29,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash 76191, now seen corresponding path program 1 times [2023-10-12 17:38:29,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:29,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168094284] [2023-10-12 17:38:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:29,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,188 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:29,228 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:38:29,228 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:38:29,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:38:29,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:38:29,229 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:38:29,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:38:29,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:38:29,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:38:29,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:38:29,229 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:38:29,239 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 17:38:29,245 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 17:38:29,271 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:38:29,271 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:38:29,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:29,275 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 17:38:29,313 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 17:38:29,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:38:29,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:38:29,334 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:38:29,335 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {pos=0} Honda state: {pos=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:38:29,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:38:29,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:29,341 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 17:38:29,342 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 17:38:29,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:38:29,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:38:29,371 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 17:38:29,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:29,372 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 17:38:29,374 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 17:38:29,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:38:29,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:38:29,450 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:38:29,456 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 17:38:29,456 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:38:29,456 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:38:29,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:38:29,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:38:29,456 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:38:29,457 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,457 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:38:29,457 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:38:29,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:38:29,457 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:38:29,457 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:38:29,458 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 17:38:29,464 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 17:38:29,490 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:38:29,493 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:38:29,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:29,509 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 17:38:29,509 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 17:38:29,514 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 17:38:29,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:29,522 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:38:29,522 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:29,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:38:29,522 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:29,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:38:29,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:38:29,535 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:38:29,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-10-12 17:38:29,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:29,540 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 17:38:29,542 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 17:38:29,544 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 17:38:29,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:29,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:38:29,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:29,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:38:29,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:29,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:38:29,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:38:29,555 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:38:29,558 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:38:29,558 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:38:29,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:29,606 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 17:38:29,645 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:38:29,646 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:38:29,646 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:38:29,646 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N) = -1*i1 + 2*N Supporting invariants [] [2023-10-12 17:38:29,647 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 17:38:29,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-10-12 17:38:29,651 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:38:29,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:38:29,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:38:29,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:38:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:38:29,700 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:38:29,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:38:29,701 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 17:38:29,722 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 17:38:29,786 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 17:38:29,790 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 17:38:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2023-10-12 17:38:29,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 160 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:38:29,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:29,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 160 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:38:29,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:29,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 160 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:38:29,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:29,794 INFO L430 stractBuchiCegarLoop]: Abstraction has has 20 places, 44 transitions, 224 flow [2023-10-12 17:38:29,794 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:38:29,794 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 20 places, 44 transitions, 224 flow [2023-10-12 17:38:29,795 ERROR L47 etriNetUnfolderRabin]: [1:1A:[46] $Ultimate##0-->L40: Formula: (and (= v_i1_7 v_pos_9) (= v_i2_7 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} OutVars{i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} AuxVars[] AssignedVars[][13], 2:2A:[68] L40-->L17: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][17], 4:3A:[71] L40-1-->L28: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1][11]][5:4A:[85] L28-->L28: Formula: (and (< v_i2_27 (* v_N_17 2)) (= v_i2_26 (+ 2 v_i2_27)) (= v_pos_77 v_pos_75)) InVars {N=v_N_17, i2=v_i2_27, pos=v_pos_77} OutVars{N=v_N_17, i2=v_i2_26, pos=v_pos_75} AuxVars[] AssignedVars[i2, pos][38]] [2023-10-12 17:38:29,796 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:38:29,796 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-10-12 17:38:29,796 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:38:29,796 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:38:29,796 INFO L748 eck$LassoCheckResult]: Stem: 34#[$Ultimate##0]true [46] $Ultimate##0-->L40: Formula: (and (= v_i1_7 v_pos_9) (= v_i2_7 v_pos_9) (= v_pos_9 0)) InVars {i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} OutVars{i1=v_i1_7, pos=v_pos_9, i2=v_i2_7} AuxVars[] AssignedVars[] 36#[L40]true [68] L40-->L17: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 38#[L40-1, L17]true [71] L40-1-->L28: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 73#[L41, L17, L28]true [2023-10-12 17:38:29,796 INFO L750 eck$LassoCheckResult]: Loop: 73#[L41, L17, L28]true [85] L28-->L28: Formula: (and (< v_i2_27 (* v_N_17 2)) (= v_i2_26 (+ 2 v_i2_27)) (= v_pos_77 v_pos_75)) InVars {N=v_N_17, i2=v_i2_27, pos=v_pos_77} OutVars{N=v_N_17, i2=v_i2_26, pos=v_pos_75} AuxVars[] AssignedVars[i2, pos] 73#[L41, L17, L28]true [2023-10-12 17:38:29,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash 76176, now seen corresponding path program 1 times [2023-10-12 17:38:29,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:29,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763685146] [2023-10-12 17:38:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:29,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:29,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:29,803 INFO L85 PathProgramCache]: Analyzing trace with hash 116, now seen corresponding path program 1 times [2023-10-12 17:38:29,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:29,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489653401] [2023-10-12 17:38:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:29,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:29,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:29,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2361541, now seen corresponding path program 1 times [2023-10-12 17:38:29,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:29,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902838499] [2023-10-12 17:38:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:29,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:29,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:29,829 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:38:29,829 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:38:29,829 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:38:29,830 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:38:29,830 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:38:29,830 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,830 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:38:29,830 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:38:29,830 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:38:29,830 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:38:29,830 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:38:29,831 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 17:38:29,833 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 17:38:29,852 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:38:29,852 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:38:29,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:29,853 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 17:38:29,855 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 17:38:29,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:38:29,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:38:29,877 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:38:29,877 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {pos=0} Honda state: {pos=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:38:29,907 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 17:38:29,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:29,908 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 17:38:29,911 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 17:38:29,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:38:29,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:38:29,920 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 17:38:29,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:29,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:29,921 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 17:38:29,924 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 17:38:29,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:38:29,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:38:30,005 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:38:30,010 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 17:38:30,010 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:38:30,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:38:30,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:38:30,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:38:30,010 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:38:30,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:30,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:38:30,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:38:30,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: misc-2-unrolled.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:38:30,010 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:38:30,010 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:38:30,011 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 17:38:30,014 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 17:38:30,035 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:38:30,035 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:38:30,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:30,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:30,036 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 17:38:30,052 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 17:38:30,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:30,057 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:38:30,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:30,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:38:30,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:30,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:38:30,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:38:30,062 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 17:38:30,084 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:38:30,105 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 17:38:30,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:30,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:30,111 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 17:38:30,112 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 17:38:30,113 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 17:38:30,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:30,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:38:30,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:30,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:38:30,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:30,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:38:30,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:38:30,134 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:38:30,135 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:38:30,136 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:38:30,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:30,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:30,138 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 17:38:30,139 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 17:38:30,140 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:38:30,140 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:38:30,140 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:38:30,140 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N) = -1*i2 + 2*N Supporting invariants [] [2023-10-12 17:38:30,142 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 17:38:30,143 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:38:30,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:38:30,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:38:30,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:38:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:38:30,164 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:38:30,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:38:30,165 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 17:38:30,165 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 17:38:30,213 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 17:38:30,213 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 17:38:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2023-10-12 17:38:30,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 160 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:38:30,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:30,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 160 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:38:30,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:30,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 160 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:38:30,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:30,215 INFO L430 stractBuchiCegarLoop]: Abstraction has has 24 places, 176 transitions, 1248 flow [2023-10-12 17:38:30,215 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:38:30,215 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 24 places, 176 transitions, 1248 flow [2023-10-12 17:38:30,241 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 17:38:30,246 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 17:38:30,256 INFO L124 PetriNetUnfolderBase]: 16/32 cut-off events. [2023-10-12 17:38:30,256 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-10-12 17:38:30,256 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is empty [2023-10-12 17:38:30,261 INFO L201 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:38:30 BoogieIcfgContainer [2023-10-12 17:38:30,261 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:38:30,261 INFO L158 Benchmark]: Toolchain (without parser) took 2092.41ms. Allocated memory was 183.5MB in the beginning and 318.8MB in the end (delta: 135.3MB). Free memory was 139.3MB in the beginning and 289.8MB in the end (delta: -150.5MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. [2023-10-12 17:38:30,261 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.21ms. Allocated memory is still 183.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:38:30,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.49ms. Allocated memory is still 183.5MB. Free memory was 139.1MB in the beginning and 137.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:38:30,262 INFO L158 Benchmark]: Boogie Preprocessor took 14.25ms. Allocated memory is still 183.5MB. Free memory was 137.7MB in the beginning and 136.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:38:30,262 INFO L158 Benchmark]: RCFGBuilder took 432.30ms. Allocated memory is still 183.5MB. Free memory was 136.6MB in the beginning and 127.3MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-10-12 17:38:30,263 INFO L158 Benchmark]: BuchiAutomizer took 1615.30ms. Allocated memory was 183.5MB in the beginning and 318.8MB in the end (delta: 135.3MB). Free memory was 127.3MB in the beginning and 289.8MB in the end (delta: -162.5MB). Peak memory consumption was 48.7MB. Max. memory is 8.0GB. [2023-10-12 17:38:30,264 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 0.21ms. Allocated memory is still 183.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.49ms. Allocated memory is still 183.5MB. Free memory was 139.1MB in the beginning and 137.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.25ms. Allocated memory is still 183.5MB. Free memory was 137.7MB in the beginning and 136.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 432.30ms. Allocated memory is still 183.5MB. Free memory was 136.6MB in the beginning and 127.3MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1615.30ms. Allocated memory was 183.5MB in the beginning and 318.8MB in the end (delta: 135.3MB). Free memory was 127.3MB in the beginning and 289.8MB in the end (delta: -162.5MB). Peak memory consumption was 48.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * N + -1 * i1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i2 + 2 * N and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 74 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp80 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 28 PlacesBefore, 16 PlacesAfterwards, 23 TransitionsBefore, 11 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 90, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 76, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 76, independent: 68, independent conditional: 0, independent unconditional: 68, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, independent: 29, independent conditional: 0, independent unconditional: 29, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 90, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 76, unknown conditional: 0, unknown unconditional: 76] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:38:30,276 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...