/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/chl/nzb-file-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:38:08,824 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:38:08,884 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 17:38:08,913 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:38:08,913 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:38:08,914 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:38:08,915 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:38:08,915 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:38:08,915 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:38:08,918 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:38:08,918 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:38:08,918 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:38:08,918 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:38:08,919 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:38:08,920 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:38:08,920 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:38:08,920 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:38:08,920 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:38:08,920 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:38:08,921 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:38:08,921 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:38:08,921 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:38:08,921 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:38:08,921 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:38:08,921 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:38:08,922 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:38:08,922 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:38:08,922 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:38:08,922 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:38:08,922 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:38:08,923 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:38:08,923 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:38:08,923 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:38:08,924 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:38:08,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> RABIN_PETRI_NET [2023-10-12 17:38:09,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:38:09,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:38:09,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:38:09,132 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:38:09,132 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:38:09,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-symm.wvr.bpl [2023-10-12 17:38:09,134 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/nzb-file-symm.wvr.bpl' [2023-10-12 17:38:09,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:38:09,166 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:38:09,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:38:09,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:38:09,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:38:09,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,195 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:38:09,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:38:09,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:38:09,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:38:09,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:38:09,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:38:09,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:38:09,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:38:09,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:38:09,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/1) ... [2023-10-12 17:38:09,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:09,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:09,258 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 17:38:09,286 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 17:38:09,301 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:38:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:38:09,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:38:09,302 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:38:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:38:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:38:09,302 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:38:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:38:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:38:09,303 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 17:38:09,346 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:38:09,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:38:09,492 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:38:09,565 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:38:09,566 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-10-12 17:38:09,567 INFO L201 PluginConnector]: Adding new model nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:38:09 BoogieIcfgContainer [2023-10-12 17:38:09,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:38:09,568 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:38:09,568 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:38:09,571 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:38:09,572 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:38:09,572 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:38:09" (1/2) ... [2023-10-12 17:38:09,573 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2da0e742 and model type nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:38:09, skipping insertion in model container [2023-10-12 17:38:09,573 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:38:09,573 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:38:09" (2/2) ... [2023-10-12 17:38:09,574 INFO L332 chiAutomizerObserver]: Analyzing ICFG nzb-file-symm.wvr.bpl [2023-10-12 17:38:09,642 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:38:09,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 22 transitions, 60 flow [2023-10-12 17:38:09,682 INFO L124 PetriNetUnfolderBase]: 4/18 cut-off events. [2023-10-12 17:38:09,683 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:38:09,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 4/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2023-10-12 17:38:09,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 22 transitions, 60 flow [2023-10-12 17:38:09,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 18 transitions, 48 flow [2023-10-12 17:38:09,690 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:38:09,700 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 18 transitions, 48 flow [2023-10-12 17:38:09,701 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 18 transitions, 48 flow [2023-10-12 17:38:09,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 18 transitions, 48 flow [2023-10-12 17:38:09,706 INFO L124 PetriNetUnfolderBase]: 4/18 cut-off events. [2023-10-12 17:38:09,706 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:38:09,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 4/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2023-10-12 17:38:09,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 70 [2023-10-12 17:38:09,846 INFO L134 LiptonReduction]: Checked pairs total: 24 [2023-10-12 17:38:09,847 INFO L136 LiptonReduction]: Total number of compositions: 7 [2023-10-12 17:38:09,856 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:38:09,856 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:38:09,856 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:38:09,856 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:38:09,856 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:38:09,856 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:38:09,856 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:38:09,856 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == RabinPetriNetCegarLoop ======== [2023-10-12 17:38:09,857 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 17 places, 14 transitions, 40 flow [2023-10-12 17:38:09,859 ERROR L47 etriNetUnfolderRabin]: [1:1A:[108] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][7], 3:2A:[96] $Ultimate##0-->L34: Formula: (and (not v_break_10_29) (not v_is_null_1_9) (= v_i_9_24 0) (not v_is_null_5_9)) InVars {is_null_1=v_is_null_1_9, is_null_5=v_is_null_5_9} OutVars{break_10=v_break_10_29, is_null_5=v_is_null_5_9, is_null_1=v_is_null_1_9, i_9=v_i_9_24} AuxVars[] AssignedVars[break_10, i_9][1]][4:3A:[99] L34-->L34: Formula: (let ((.cse4 (not v_break_10_58)) (.cse2 (not v_break_10_57)) (.cse8 (select v_ends_with_6_29 v_i_9_33)) (.cse9 (select v_ends_with_2_27 v_i_9_33))) (let ((.cse0 (not v_break_10_47)) (.cse3 (not .cse9)) (.cse6 (not .cse8)) (.cse5 (and .cse2 .cse8)) (.cse1 (and .cse4 .cse9)) (.cse7 (and .cse8 .cse9))) (and (< v_i_9_33 5) .cse0 (or (and v_break_10_57 (or v_break_10_58 .cse1)) (and .cse2 (or .cse3 v_break_10_58) .cse4)) (or (and (or v_break_10_57 .cse5) v_break_10_45) (and .cse2 (not v_break_10_45) (or v_break_10_57 .cse6))) (or (and (or .cse7 v_break_10_47) v_break_10_58) (and .cse0 .cse4 (or .cse3 .cse6))) (= (+ v_i_9_33 1) v_i_9_32) (= v_result_8_41 (ite .cse5 (+ 1000 v_i_9_33) (ite .cse1 (+ v_i_9_33 (- 1000)) (ite .cse7 0 v_result_8_42))))))) InVars {result_8=v_result_8_42, break_10=v_break_10_47, ends_with_6=v_ends_with_6_29, i_9=v_i_9_33, ends_with_2=v_ends_with_2_27} OutVars{result_8=v_result_8_41, break_10=v_break_10_45, ends_with_6=v_ends_with_6_29, i_9=v_i_9_32, ends_with_2=v_ends_with_2_27} AuxVars[v_break_10_57, v_break_10_58] AssignedVars[result_8, break_10, i_9][3]] [2023-10-12 17:38:09,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:38:09,860 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-10-12 17:38:09,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:38:09,860 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:38:09,862 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:38:09,862 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 17 places, 14 transitions, 40 flow [2023-10-12 17:38:09,864 ERROR L47 etriNetUnfolderRabin]: [1:1A:[108] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][7], 3:2A:[96] $Ultimate##0-->L34: Formula: (and (not v_break_10_29) (not v_is_null_1_9) (= v_i_9_24 0) (not v_is_null_5_9)) InVars {is_null_1=v_is_null_1_9, is_null_5=v_is_null_5_9} OutVars{break_10=v_break_10_29, is_null_5=v_is_null_5_9, is_null_1=v_is_null_1_9, i_9=v_i_9_24} AuxVars[] AssignedVars[break_10, i_9][1]][4:3A:[99] L34-->L34: Formula: (let ((.cse4 (not v_break_10_58)) (.cse2 (not v_break_10_57)) (.cse8 (select v_ends_with_6_29 v_i_9_33)) (.cse9 (select v_ends_with_2_27 v_i_9_33))) (let ((.cse0 (not v_break_10_47)) (.cse3 (not .cse9)) (.cse6 (not .cse8)) (.cse5 (and .cse2 .cse8)) (.cse1 (and .cse4 .cse9)) (.cse7 (and .cse8 .cse9))) (and (< v_i_9_33 5) .cse0 (or (and v_break_10_57 (or v_break_10_58 .cse1)) (and .cse2 (or .cse3 v_break_10_58) .cse4)) (or (and (or v_break_10_57 .cse5) v_break_10_45) (and .cse2 (not v_break_10_45) (or v_break_10_57 .cse6))) (or (and (or .cse7 v_break_10_47) v_break_10_58) (and .cse0 .cse4 (or .cse3 .cse6))) (= (+ v_i_9_33 1) v_i_9_32) (= v_result_8_41 (ite .cse5 (+ 1000 v_i_9_33) (ite .cse1 (+ v_i_9_33 (- 1000)) (ite .cse7 0 v_result_8_42))))))) InVars {result_8=v_result_8_42, break_10=v_break_10_47, ends_with_6=v_ends_with_6_29, i_9=v_i_9_33, ends_with_2=v_ends_with_2_27} OutVars{result_8=v_result_8_41, break_10=v_break_10_45, ends_with_6=v_ends_with_6_29, i_9=v_i_9_32, ends_with_2=v_ends_with_2_27} AuxVars[v_break_10_57, v_break_10_58] AssignedVars[result_8, break_10, i_9][3]] [2023-10-12 17:38:09,864 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:38:09,864 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-10-12 17:38:09,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-10-12 17:38:09,864 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:38:09,867 INFO L748 eck$LassoCheckResult]: Stem: 27#[$Ultimate##0]true [108] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 29#[$Ultimate##0, L95]true [96] $Ultimate##0-->L34: Formula: (and (not v_break_10_29) (not v_is_null_1_9) (= v_i_9_24 0) (not v_is_null_5_9)) InVars {is_null_1=v_is_null_1_9, is_null_5=v_is_null_5_9} OutVars{break_10=v_break_10_29, is_null_5=v_is_null_5_9, is_null_1=v_is_null_1_9, i_9=v_i_9_24} AuxVars[] AssignedVars[break_10, i_9] 31#[L95, L34]true [2023-10-12 17:38:09,868 INFO L750 eck$LassoCheckResult]: Loop: 31#[L95, L34]true [99] L34-->L34: Formula: (let ((.cse4 (not v_break_10_58)) (.cse2 (not v_break_10_57)) (.cse8 (select v_ends_with_6_29 v_i_9_33)) (.cse9 (select v_ends_with_2_27 v_i_9_33))) (let ((.cse0 (not v_break_10_47)) (.cse3 (not .cse9)) (.cse6 (not .cse8)) (.cse5 (and .cse2 .cse8)) (.cse1 (and .cse4 .cse9)) (.cse7 (and .cse8 .cse9))) (and (< v_i_9_33 5) .cse0 (or (and v_break_10_57 (or v_break_10_58 .cse1)) (and .cse2 (or .cse3 v_break_10_58) .cse4)) (or (and (or v_break_10_57 .cse5) v_break_10_45) (and .cse2 (not v_break_10_45) (or v_break_10_57 .cse6))) (or (and (or .cse7 v_break_10_47) v_break_10_58) (and .cse0 .cse4 (or .cse3 .cse6))) (= (+ v_i_9_33 1) v_i_9_32) (= v_result_8_41 (ite .cse5 (+ 1000 v_i_9_33) (ite .cse1 (+ v_i_9_33 (- 1000)) (ite .cse7 0 v_result_8_42))))))) InVars {result_8=v_result_8_42, break_10=v_break_10_47, ends_with_6=v_ends_with_6_29, i_9=v_i_9_33, ends_with_2=v_ends_with_2_27} OutVars{result_8=v_result_8_41, break_10=v_break_10_45, ends_with_6=v_ends_with_6_29, i_9=v_i_9_32, ends_with_2=v_ends_with_2_27} AuxVars[v_break_10_57, v_break_10_58] AssignedVars[result_8, break_10, i_9] 31#[L95, L34]true [2023-10-12 17:38:09,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash 4405, now seen corresponding path program 1 times [2023-10-12 17:38:09,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:09,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431421502] [2023-10-12 17:38:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:09,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:09,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:09,971 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:09,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:09,975 INFO L85 PathProgramCache]: Analyzing trace with hash 130, now seen corresponding path program 1 times [2023-10-12 17:38:09,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:09,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877255881] [2023-10-12 17:38:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:09,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:09,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:10,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:10,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:10,008 INFO L85 PathProgramCache]: Analyzing trace with hash 136654, now seen corresponding path program 1 times [2023-10-12 17:38:10,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:10,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288748552] [2023-10-12 17:38:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:10,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:10,017 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:10,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:10,439 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:38:10,440 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:38:10,440 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:38:10,440 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:38:10,440 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:38:10,440 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:10,440 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:38:10,440 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:38:10,440 INFO L133 ssoRankerPreferences]: Filename of dumped script: nzb-file-symm.wvr.bpl_BEv2_Iteration1_Lasso [2023-10-12 17:38:10,441 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:38:10,441 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:38:10,455 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 17:38:10,463 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 17:38:10,465 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 17:38:10,470 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 17:38:10,712 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2023-10-12 17:38:10,891 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:38:10,893 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:38:10,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:10,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:10,902 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 17:38:10,903 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 17:38:10,907 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 17:38:10,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:10,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:10,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:38:10,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:10,916 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:38:10,916 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:38:10,941 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:38:10,944 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 17:38:10,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:10,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:10,946 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 17:38:10,947 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 17:38:10,957 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 17:38:10,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:10,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:10,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:38:10,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:10,964 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:38:10,964 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:38:10,980 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:38:10,990 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 17:38:10,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:10,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:10,991 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 17:38:10,999 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 17:38:10,999 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 17:38:11,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:11,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:11,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:38:11,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:11,008 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:38:11,008 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:38:11,020 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:38:11,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-10-12 17:38:11,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:11,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:11,030 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 17:38:11,032 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 17:38:11,035 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 17:38:11,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:11,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:11,042 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2023-10-12 17:38:11,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:11,097 INFO L401 nArgumentSynthesizer]: We have 48 Motzkin's Theorem applications. [2023-10-12 17:38:11,098 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2023-10-12 17:38:11,163 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:38:11,233 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2023-10-12 17:38:11,233 INFO L444 ModelExtractionUtils]: 43 out of 55 variables were initially zero. Simplification set additionally 9 variables to zero. [2023-10-12 17:38:11,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:11,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:11,235 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 17:38:11,237 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 17:38:11,290 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:38:11,307 INFO L438 nArgumentSynthesizer]: Removed 8 redundant supporting invariants from a total of 8. [2023-10-12 17:38:11,307 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:38:11,307 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_9) = -2*i_9 + 9 Supporting invariants [] [2023-10-12 17:38:11,321 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 17:38:11,323 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:38:11,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:38:11,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:38:11,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:38:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:38:11,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:38:11,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:38:11,381 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 17:38:11,407 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 17:38:11,474 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 17:38:11,477 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 17:38:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2023-10-12 17:38:11,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:38:11,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:11,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:38:11,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:11,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:38:11,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:11,483 INFO L430 stractBuchiCegarLoop]: Abstraction has has 22 places, 70 transitions, 340 flow [2023-10-12 17:38:11,483 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:38:11,483 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 22 places, 70 transitions, 340 flow [2023-10-12 17:38:11,488 ERROR L47 etriNetUnfolderRabin]: [1:1A:[108] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0][37], 2:2A:[111] L95-->$Ultimate##0: 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], 14:3A:[102] $Ultimate##0-->L68: Formula: (and (not v_is_null_1_15) (not v_break_13_39) (= v_i_12_28 0) (not v_is_null_5_15)) InVars {is_null_1=v_is_null_1_15, is_null_5=v_is_null_5_15} OutVars{i_12=v_i_12_28, is_null_5=v_is_null_5_15, break_13=v_break_13_39, is_null_1=v_is_null_1_15} AuxVars[] AssignedVars[i_12, break_13][32]][16:4A:[105] L68-->L68: Formula: (let ((.cse4 (not v_break_13_57)) (.cse2 (not v_break_13_58)) (.cse8 (select v_ends_with_6_31 v_i_12_35)) (.cse9 (select v_ends_with_2_31 v_i_12_35))) (let ((.cse1 (not .cse9)) (.cse5 (not .cse8)) (.cse0 (and .cse9 .cse2)) (.cse3 (and .cse4 .cse8)) (.cse6 (and .cse8 .cse9)) (.cse7 (not v_break_13_47))) (and (or (and (or .cse0 v_break_13_58) v_break_13_45) (and (or .cse1 v_break_13_58) (not v_break_13_45) .cse2)) (or (and (or v_break_13_57 .cse3) v_break_13_58) (and .cse4 (or v_break_13_57 .cse5) .cse2)) (or (and (or .cse6 v_break_13_47) v_break_13_57) (and .cse4 .cse7 (or .cse1 .cse5))) (< v_i_12_35 5) (= v_result_11_39 (ite .cse0 (+ 1000 v_i_12_35) (ite .cse3 (+ v_i_12_35 (- 1000)) (ite .cse6 0 v_result_11_41)))) .cse7 (= (+ v_i_12_35 1) v_i_12_34)))) InVars {result_11=v_result_11_41, i_12=v_i_12_35, ends_with_6=v_ends_with_6_31, break_13=v_break_13_47, ends_with_2=v_ends_with_2_31} OutVars{result_11=v_result_11_39, i_12=v_i_12_34, ends_with_6=v_ends_with_6_31, break_13=v_break_13_45, ends_with_2=v_ends_with_2_31} AuxVars[v_break_13_58, v_break_13_57] AssignedVars[result_11, i_12, break_13][27]] [2023-10-12 17:38:11,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-10-12 17:38:11,488 INFO L124 PetriNetUnfolderBase]: 8/15 cut-off events. [2023-10-12 17:38:11,488 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:38:11,488 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is not empty [2023-10-12 17:38:11,488 INFO L748 eck$LassoCheckResult]: Stem: 27#[$Ultimate##0]true [108] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 29#[$Ultimate##0, L95]true [111] L95-->$Ultimate##0: 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] 66#[L96, $Ultimate##0, $Ultimate##0]true [102] $Ultimate##0-->L68: Formula: (and (not v_is_null_1_15) (not v_break_13_39) (= v_i_12_28 0) (not v_is_null_5_15)) InVars {is_null_1=v_is_null_1_15, is_null_5=v_is_null_5_15} OutVars{i_12=v_i_12_28, is_null_5=v_is_null_5_15, break_13=v_break_13_39, is_null_1=v_is_null_1_15} AuxVars[] AssignedVars[i_12, break_13] 68#[L68, L96, $Ultimate##0]true [2023-10-12 17:38:11,488 INFO L750 eck$LassoCheckResult]: Loop: 68#[L68, L96, $Ultimate##0]true [105] L68-->L68: Formula: (let ((.cse4 (not v_break_13_57)) (.cse2 (not v_break_13_58)) (.cse8 (select v_ends_with_6_31 v_i_12_35)) (.cse9 (select v_ends_with_2_31 v_i_12_35))) (let ((.cse1 (not .cse9)) (.cse5 (not .cse8)) (.cse0 (and .cse9 .cse2)) (.cse3 (and .cse4 .cse8)) (.cse6 (and .cse8 .cse9)) (.cse7 (not v_break_13_47))) (and (or (and (or .cse0 v_break_13_58) v_break_13_45) (and (or .cse1 v_break_13_58) (not v_break_13_45) .cse2)) (or (and (or v_break_13_57 .cse3) v_break_13_58) (and .cse4 (or v_break_13_57 .cse5) .cse2)) (or (and (or .cse6 v_break_13_47) v_break_13_57) (and .cse4 .cse7 (or .cse1 .cse5))) (< v_i_12_35 5) (= v_result_11_39 (ite .cse0 (+ 1000 v_i_12_35) (ite .cse3 (+ v_i_12_35 (- 1000)) (ite .cse6 0 v_result_11_41)))) .cse7 (= (+ v_i_12_35 1) v_i_12_34)))) InVars {result_11=v_result_11_41, i_12=v_i_12_35, ends_with_6=v_ends_with_6_31, break_13=v_break_13_47, ends_with_2=v_ends_with_2_31} OutVars{result_11=v_result_11_39, i_12=v_i_12_34, ends_with_6=v_ends_with_6_31, break_13=v_break_13_45, ends_with_2=v_ends_with_2_31} AuxVars[v_break_13_58, v_break_13_57] AssignedVars[result_11, i_12, break_13] 68#[L68, L96, $Ultimate##0]true [2023-10-12 17:38:11,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash 137122, now seen corresponding path program 1 times [2023-10-12 17:38:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:11,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407398898] [2023-10-12 17:38:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:11,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:11,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:11,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash 136, now seen corresponding path program 1 times [2023-10-12 17:38:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:11,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679358848] [2023-10-12 17:38:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:11,517 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:11,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:11,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash 4250887, now seen corresponding path program 1 times [2023-10-12 17:38:11,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:38:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090408667] [2023-10-12 17:38:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:38:11,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:38:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:11,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:38:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:38:11,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:38:11,822 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:38:11,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:38:11,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:38:11,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:38:11,822 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:38:11,823 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:11,823 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:38:11,823 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:38:11,823 INFO L133 ssoRankerPreferences]: Filename of dumped script: nzb-file-symm.wvr.bpl_BEv2_Iteration2_Lasso [2023-10-12 17:38:11,823 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:38:11,823 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:38:11,825 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 17:38:11,828 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 17:38:11,922 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 17:38:11,960 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 17:38:11,962 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 17:38:11,964 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 17:38:11,967 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:38:12,040 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2023-10-12 17:38:12,187 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:38:12,187 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:38:12,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:12,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:12,197 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 17:38:12,199 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 17:38:12,248 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 17:38:12,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:12,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:12,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:38:12,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:12,256 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-10-12 17:38:12,256 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-10-12 17:38:12,266 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:38:12,279 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 17:38:12,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:12,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:12,280 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 17:38:12,283 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 17:38:12,284 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 17:38:12,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:38:12,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:38:12,290 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2023-10-12 17:38:12,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:38:12,322 INFO L401 nArgumentSynthesizer]: We have 48 Motzkin's Theorem applications. [2023-10-12 17:38:12,322 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2023-10-12 17:38:12,390 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:38:12,450 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2023-10-12 17:38:12,451 INFO L444 ModelExtractionUtils]: 43 out of 55 variables were initially zero. Simplification set additionally 9 variables to zero. [2023-10-12 17:38:12,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:38:12,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:38:12,452 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 17:38:12,454 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 17:38:12,455 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:38:12,480 INFO L438 nArgumentSynthesizer]: Removed 8 redundant supporting invariants from a total of 8. [2023-10-12 17:38:12,480 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:38:12,480 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i_12) = -2*i_12 + 9 Supporting invariants [] [2023-10-12 17:38:12,505 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 17:38:12,506 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:38:12,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:38:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:38:12,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:38:12,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:38:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:38:12,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:38:12,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:38:12,530 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 17:38:12,530 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 17:38:12,584 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 17:38:12,585 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 17:38:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2023-10-12 17:38:12,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:38:12,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:12,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:38:12,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:12,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 114 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:38:12,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:38:12,586 INFO L430 stractBuchiCegarLoop]: Abstraction has has 27 places, 350 transitions, 2400 flow [2023-10-12 17:38:12,586 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:38:12,586 INFO L67 RabinIsEmpty]: Start rabinIsEmpty. Operand has 27 places, 350 transitions, 2400 flow [2023-10-12 17:38:12,599 INFO L124 PetriNetUnfolderBase]: 46/91 cut-off events. [2023-10-12 17:38:12,599 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-10-12 17:38:12,599 INFO L72 RabinIsEmpty]: Finished rabinIsEmpty language is empty [2023-10-12 17:38:12,603 INFO L201 PluginConnector]: Adding new model nzb-file-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:38:12 BoogieIcfgContainer [2023-10-12 17:38:12,603 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:38:12,604 INFO L158 Benchmark]: Toolchain (without parser) took 3437.37ms. Allocated memory was 210.8MB in the beginning and 253.8MB in the end (delta: 43.0MB). Free memory was 161.9MB in the beginning and 162.6MB in the end (delta: -708.9kB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-10-12 17:38:12,604 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.21ms. Allocated memory is still 210.8MB. Free memory is still 163.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:38:12,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.37ms. Allocated memory is still 210.8MB. Free memory was 161.7MB in the beginning and 160.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:38:12,605 INFO L158 Benchmark]: Boogie Preprocessor took 26.08ms. Allocated memory is still 210.8MB. Free memory was 160.2MB in the beginning and 159.1MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:38:12,605 INFO L158 Benchmark]: RCFGBuilder took 342.22ms. Allocated memory is still 210.8MB. Free memory was 159.0MB in the beginning and 177.2MB in the end (delta: -18.2MB). Peak memory consumption was 18.0MB. Max. memory is 8.0GB. [2023-10-12 17:38:12,605 INFO L158 Benchmark]: BuchiAutomizer took 3035.37ms. Allocated memory was 210.8MB in the beginning and 253.8MB in the end (delta: 43.0MB). Free memory was 177.2MB in the beginning and 162.6MB in the end (delta: 14.6MB). Peak memory consumption was 57.4MB. Max. memory is 8.0GB. [2023-10-12 17:38:12,607 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 210.8MB. Free memory is still 163.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.37ms. Allocated memory is still 210.8MB. Free memory was 161.7MB in the beginning and 160.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.08ms. Allocated memory is still 210.8MB. Free memory was 160.2MB in the beginning and 159.1MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 342.22ms. Allocated memory is still 210.8MB. Free memory was 159.0MB in the beginning and 177.2MB in the end (delta: -18.2MB). Peak memory consumption was 18.0MB. Max. memory is 8.0GB. * BuchiAutomizer took 3035.37ms. Allocated memory was 210.8MB in the beginning and 253.8MB in the end (delta: 43.0MB). Free memory was 177.2MB in the beginning and 162.6MB in the end (delta: 14.6MB). Peak memory consumption was 57.4MB. 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i_9 + 9 and consists of 4 locations. One deterministic module has affine ranking function 9 + -2 * i_12 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 3 iterations. TraceHistogramMax:0. Analysis of lassos took 2.4s. 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, 100 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 36 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital96 mio100 ax100 hnf100 lsp324 ukn22 mio100 lsp100 div100 bol136 ite100 ukn100 eq140 hnf98 smp100 dnf464 smp25 tf100 neg100 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 277ms VariablesStem: 2 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 48 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.1s - 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: 0.1s, 21 PlacesBefore, 17 PlacesAfterwards, 18 TransitionsBefore, 14 TransitionsAfterwards, 70 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 24 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, independent: 24, independent conditional: 0, independent unconditional: 24, 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: 24, independent: 24, independent conditional: 0, independent unconditional: 24, 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: 24, independent: 24, independent conditional: 0, independent unconditional: 24, 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: 24, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, 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 17:38:12,624 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 17:38:12,827 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...