/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:14:19,538 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:14:19,597 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 17:14:19,619 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:14:19,619 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:14:19,620 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:14:19,620 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:14:19,621 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:14:19,621 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:14:19,624 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:14:19,624 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:14:19,624 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:14:19,625 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:14:19,625 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:14:19,626 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:14:19,626 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:14:19,626 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:14:19,626 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:14:19,626 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:14:19,627 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:14:19,627 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:14:19,627 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:14:19,627 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:14:19,628 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:14:19,628 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:14:19,629 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:14:19,629 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:14:19,629 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:14:19,629 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:14:19,629 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:14:19,630 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:14:19,630 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:14:19,630 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:14:19,631 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:14:19,631 INFO L137 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:14:19,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:14:19,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:14:19,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:14:19,845 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:14:19,846 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:14:19,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl [2023-10-12 17:14:19,847 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl' [2023-10-12 17:14:19,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:14:19,877 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:14:19,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:19,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:14:19,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:14:19,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,895 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:14:19,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:19,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:14:19,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:14:19,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:14:19,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:14:19,917 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:14:19,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:14:19,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:14:19,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/1) ... [2023-10-12 17:14:19,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:19,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:19,945 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 17:14:19,952 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 17:14:19,975 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:14:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:14:19,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:14:19,975 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:14:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:14:19,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:14:19,975 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:14:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:14:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:14:19,976 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:14:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:14:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:14:19,976 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2023-10-12 17:14:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-10-12 17:14:19,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-10-12 17:14:19,977 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 17:14:20,011 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:14:20,013 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:14:20,092 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:14:20,111 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:14:20,111 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:14:20,112 INFO L201 PluginConnector]: Adding new model difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:20 BoogieIcfgContainer [2023-10-12 17:14:20,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:14:20,113 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:14:20,113 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:14:20,116 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:14:20,117 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:20,117 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:19" (1/2) ... [2023-10-12 17:14:20,118 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7d165fc9 and model type difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:14:20, skipping insertion in model container [2023-10-12 17:14:20,118 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:20,118 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:20" (2/2) ... [2023-10-12 17:14:20,119 INFO L332 chiAutomizerObserver]: Analyzing ICFG difference-det.wvr.bpl [2023-10-12 17:14:20,181 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-10-12 17:14:20,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 44 transitions, 120 flow [2023-10-12 17:14:20,218 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-10-12 17:14:20,218 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:14:20,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-10-12 17:14:20,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 44 transitions, 120 flow [2023-10-12 17:14:20,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 36 transitions, 96 flow [2023-10-12 17:14:20,227 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:14:20,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 36 transitions, 96 flow [2023-10-12 17:14:20,244 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 36 transitions, 96 flow [2023-10-12 17:14:20,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 36 transitions, 96 flow [2023-10-12 17:14:20,250 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-10-12 17:14:20,250 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:14:20,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-10-12 17:14:20,251 INFO L119 LiptonReduction]: Number of co-enabled transitions 288 [2023-10-12 17:14:20,544 INFO L134 LiptonReduction]: Checked pairs total: 279 [2023-10-12 17:14:20,544 INFO L136 LiptonReduction]: Total number of compositions: 18 [2023-10-12 17:14:20,557 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:14:20,557 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:14:20,557 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:14:20,557 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:14:20,557 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:14:20,557 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:14:20,557 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:14:20,557 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:14:20,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:14:20,603 INFO L131 ngComponentsAnalysis]: Automaton has 37 accepting balls. 37 [2023-10-12 17:14:20,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:20,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:20,607 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:20,607 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:20,607 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:14:20,607 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 48 states, but on-demand construction may add more states [2023-10-12 17:14:20,615 INFO L131 ngComponentsAnalysis]: Automaton has 37 accepting balls. 37 [2023-10-12 17:14:20,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:20,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:20,616 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:20,616 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:20,620 INFO L748 eck$LassoCheckResult]: Stem: 52#[$Ultimate##0]don't care [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 55#[L77]don't care [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 57#[L24-1, L77-1]don't care [2023-10-12 17:14:20,620 INFO L750 eck$LassoCheckResult]: Loop: 57#[L24-1, L77-1]don't care [134] L24-1-->L24-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_27 1) v_counter1_26) (< v_i1_13 v_N1_8)) InVars {counter1=v_counter1_27, i1=v_i1_13, N1=v_N1_8} OutVars{counter1=v_counter1_26, i1=v_i1_12, N1=v_N1_8} AuxVars[] AssignedVars[counter1, i1] 57#[L24-1, L77-1]don't care [2023-10-12 17:14:20,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,624 INFO L85 PathProgramCache]: Analyzing trace with hash 5570, now seen corresponding path program 1 times [2023-10-12 17:14:20,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044661685] [2023-10-12 17:14:20,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,692 INFO L85 PathProgramCache]: Analyzing trace with hash 165, now seen corresponding path program 1 times [2023-10-12 17:14:20,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527448758] [2023-10-12 17:14:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,703 INFO L85 PathProgramCache]: Analyzing trace with hash 172804, now seen corresponding path program 1 times [2023-10-12 17:14:20,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372375176] [2023-10-12 17:14:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,789 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:20,789 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:20,789 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:20,789 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:20,789 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:20,789 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:20,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:20,790 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:20,790 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:20,790 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:20,799 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 17:14:20,807 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 17:14:20,831 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:20,831 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:20,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,842 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 17:14:20,847 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 17:14:20,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:20,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:20,871 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 17:14:20,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,872 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 17:14:20,874 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 17:14:20,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:20,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,000 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:21,003 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 17:14:21,004 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,004 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,004 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,004 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,004 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:21,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:21,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,005 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,005 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 17:14:21,011 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 17:14:21,037 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,041 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:21,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,043 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 17:14:21,058 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 17:14:21,059 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 17:14:21,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,066 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,066 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,068 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,068 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,083 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:21,086 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:21,087 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:14:21,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,135 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 17:14:21,136 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 17:14:21,137 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:21,137 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:21,138 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:21,138 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N1) = -1*i1 + 1*N1 Supporting invariants [] [2023-10-12 17:14:21,145 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 17:14:21,147 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:21,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,189 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,190 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 17:14:21,221 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 17:14:21,223 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 48 states, but on-demand construction may add more states Second 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 17:14:21,292 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 48 states, but on-demand construction may add more states. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 137 states and 541 transitions. Complement of second has 5 states. [2023-10-12 17:14:21,295 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 17:14:21,301 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 17:14:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2023-10-12 17:14:21,307 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:14:21,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:14:21,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:14:21,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,308 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 137 states and 541 transitions. [2023-10-12 17:14:21,318 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 33 [2023-10-12 17:14:21,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 137 states to 94 states and 381 transitions. [2023-10-12 17:14:21,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2023-10-12 17:14:21,323 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 67 [2023-10-12 17:14:21,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 381 transitions. [2023-10-12 17:14:21,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:21,323 INFO L219 hiAutomatonCegarLoop]: Abstraction has 94 states and 381 transitions. [2023-10-12 17:14:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 381 transitions. [2023-10-12 17:14:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 68. [2023-10-12 17:14:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 4.220588235294118) internal successors, (287), 67 states have internal predecessors, (287), 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 17:14:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 287 transitions. [2023-10-12 17:14:21,352 INFO L241 hiAutomatonCegarLoop]: Abstraction has 68 states and 287 transitions. [2023-10-12 17:14:21,352 INFO L430 stractBuchiCegarLoop]: Abstraction has 68 states and 287 transitions. [2023-10-12 17:14:21,353 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:14:21,353 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 287 transitions. [2023-10-12 17:14:21,358 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 33 [2023-10-12 17:14:21,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:21,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:21,358 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:14:21,358 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:21,358 INFO L748 eck$LassoCheckResult]: Stem: 446#[$Ultimate##0]don't care [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 380#[L77]don't care [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 382#[L24-1, L77-1]don't care [117] L77-1-->L35-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 428#[L78, L35-1, L24-1]don't care [2023-10-12 17:14:21,358 INFO L750 eck$LassoCheckResult]: Loop: 428#[L78, L35-1, L24-1]don't care [132] L35-1-->L35-1: Formula: (and (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23) (< v_i2_17 v_N2_6)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_6} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_6} AuxVars[] AssignedVars[counter1, i2] 428#[L78, L35-1, L24-1]don't care [2023-10-12 17:14:21,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash 172787, now seen corresponding path program 1 times [2023-10-12 17:14:21,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507015774] [2023-10-12 17:14:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash 163, now seen corresponding path program 1 times [2023-10-12 17:14:21,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509165857] [2023-10-12 17:14:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash 5356529, now seen corresponding path program 1 times [2023-10-12 17:14:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193088063] [2023-10-12 17:14:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,438 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 17:14:21,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:14:21,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193088063] [2023-10-12 17:14:21,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193088063] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:14:21,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:14:21,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:14:21,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547988109] [2023-10-12 17:14:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:14:21,466 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,466 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,466 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,466 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,466 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:21,466 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,466 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,466 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,466 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:21,466 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,466 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,467 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 17:14:21,471 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 17:14:21,494 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,494 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:21,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,495 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 17:14:21,497 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 17:14:21,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:21,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,538 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 17:14:21,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,553 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 17:14:21,556 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 17:14:21,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:21,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,656 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:21,659 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 17:14:21,659 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,660 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:21,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:21,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,660 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,661 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 17:14:21,667 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 17:14:21,696 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,697 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:21,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,698 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 17:14:21,716 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 17:14:21,716 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 17:14:21,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,723 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,723 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,723 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,724 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,739 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:21,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:21,741 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:14:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,747 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 17:14:21,749 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 17:14:21,750 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:21,750 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:21,750 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:21,750 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, N2) = -1*i2 + 1*N2 Supporting invariants [] [2023-10-12 17:14:21,765 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 17:14:21,766 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:21,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,794 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,795 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 17:14:21,795 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 17:14:21,795 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 287 transitions. cyclomatic complexity: 266 Second 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 17:14:21,831 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 287 transitions. cyclomatic complexity: 266. Second 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) Result 217 states and 958 transitions. Complement of second has 4 states. [2023-10-12 17:14:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:21,832 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 17:14:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2023-10-12 17:14:21,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 29 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:14:21,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 29 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:14:21,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 29 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:14:21,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,833 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 217 states and 958 transitions. [2023-10-12 17:14:21,840 INFO L131 ngComponentsAnalysis]: Automaton has 26 accepting balls. 26 [2023-10-12 17:14:21,845 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 217 states to 154 states and 669 transitions. [2023-10-12 17:14:21,845 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2023-10-12 17:14:21,846 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84 [2023-10-12 17:14:21,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 669 transitions. [2023-10-12 17:14:21,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:21,846 INFO L219 hiAutomatonCegarLoop]: Abstraction has 154 states and 669 transitions. [2023-10-12 17:14:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 669 transitions. [2023-10-12 17:14:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 125. [2023-10-12 17:14:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 4.64) internal successors, (580), 124 states have internal predecessors, (580), 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 17:14:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 580 transitions. [2023-10-12 17:14:21,856 INFO L241 hiAutomatonCegarLoop]: Abstraction has 125 states and 580 transitions. [2023-10-12 17:14:21,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:14:21,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:14:21,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:14:21,859 INFO L87 Difference]: Start difference. First operand 125 states and 580 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:14:21,895 INFO L93 Difference]: Finished difference Result 192 states and 778 transitions. [2023-10-12 17:14:21,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 192 states and 778 transitions. [2023-10-12 17:14:21,898 INFO L131 ngComponentsAnalysis]: Automaton has 52 accepting balls. 52 [2023-10-12 17:14:21,900 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 192 states to 178 states and 740 transitions. [2023-10-12 17:14:21,900 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2023-10-12 17:14:21,900 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2023-10-12 17:14:21,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 740 transitions. [2023-10-12 17:14:21,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:21,901 INFO L219 hiAutomatonCegarLoop]: Abstraction has 178 states and 740 transitions. [2023-10-12 17:14:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 740 transitions. [2023-10-12 17:14:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 133. [2023-10-12 17:14:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 133 states have (on average 4.541353383458647) internal successors, (604), 132 states have internal predecessors, (604), 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 17:14:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 604 transitions. [2023-10-12 17:14:21,907 INFO L241 hiAutomatonCegarLoop]: Abstraction has 133 states and 604 transitions. [2023-10-12 17:14:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:14:21,907 INFO L430 stractBuchiCegarLoop]: Abstraction has 133 states and 604 transitions. [2023-10-12 17:14:21,908 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:14:21,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 133 states and 604 transitions. [2023-10-12 17:14:21,909 INFO L131 ngComponentsAnalysis]: Automaton has 26 accepting balls. 26 [2023-10-12 17:14:21,909 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:21,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:21,909 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-10-12 17:14:21,909 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:21,909 INFO L748 eck$LassoCheckResult]: Stem: 1326#[$Ultimate##0]don't care [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 1206#[L77]don't care [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 1208#[L24-1, L77-1]don't care [117] L77-1-->L35-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 1284#[L78, L35-1, L24-1]don't care [120] L78-->L47-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 1322#[L47-1, L35-1, L79, L24-1]don't care [2023-10-12 17:14:21,910 INFO L750 eck$LassoCheckResult]: Loop: 1322#[L47-1, L35-1, L79, L24-1]don't care [137] L47-1-->L47-1: Formula: (and (= (+ v_counter2_25 1) v_counter2_24) (< v_j1_15 v_M1_8) (= v_j1_14 (+ v_j1_15 1))) InVars {counter2=v_counter2_25, j1=v_j1_15, M1=v_M1_8} OutVars{counter2=v_counter2_24, j1=v_j1_14, M1=v_M1_8} AuxVars[] AssignedVars[counter2, j1] 1322#[L47-1, L35-1, L79, L24-1]don't care [2023-10-12 17:14:21,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash 5356517, now seen corresponding path program 1 times [2023-10-12 17:14:21,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482669176] [2023-10-12 17:14:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 168, now seen corresponding path program 1 times [2023-10-12 17:14:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493373488] [2023-10-12 17:14:21,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash 166052164, now seen corresponding path program 1 times [2023-10-12 17:14:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045728412] [2023-10-12 17:14:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,943 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,943 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,943 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,943 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,943 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:21,943 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,943 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,944 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,944 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:21,944 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,944 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,944 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 17:14:21,948 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 17:14:21,965 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,966 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:21,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,967 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 17:14:22,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:22,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,019 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 17:14:22,027 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 17:14:22,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,029 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 17:14:22,031 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 17:14:22,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:22,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,120 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:22,124 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 17:14:22,125 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,125 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:22,125 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,125 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,125 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,125 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:22,125 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,125 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,126 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 17:14:22,131 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 17:14:22,150 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,150 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:22,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,151 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 17:14:22,177 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 17:14:22,177 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 17:14:22,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:22,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:22,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:22,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:22,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:22,184 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:22,184 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:22,199 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:22,201 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:22,201 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:14:22,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,203 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 17:14:22,230 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:22,230 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:22,230 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:22,230 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j1, M1) = -1*j1 + 1*M1 Supporting invariants [] [2023-10-12 17:14:22,235 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 17:14:22,236 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:22,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,263 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 17:14:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,270 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,271 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 17:14:22,271 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 17:14:22,271 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 133 states and 604 transitions. cyclomatic complexity: 535 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:22,314 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 133 states and 604 transitions. cyclomatic complexity: 535. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 391 states and 1797 transitions. Complement of second has 4 states. [2023-10-12 17:14:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:22,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2023-10-12 17:14:22,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:14:22,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:22,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:14:22,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 391 states and 1797 transitions. [2023-10-12 17:14:22,321 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 15 [2023-10-12 17:14:22,323 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 391 states to 232 states and 1051 transitions. [2023-10-12 17:14:22,323 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2023-10-12 17:14:22,324 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2023-10-12 17:14:22,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 232 states and 1051 transitions. [2023-10-12 17:14:22,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:22,325 INFO L219 hiAutomatonCegarLoop]: Abstraction has 232 states and 1051 transitions. [2023-10-12 17:14:22,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states and 1051 transitions. [2023-10-12 17:14:22,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 197. [2023-10-12 17:14:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 197 states have (on average 4.741116751269035) internal successors, (934), 196 states have internal predecessors, (934), 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 17:14:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 934 transitions. [2023-10-12 17:14:22,347 INFO L241 hiAutomatonCegarLoop]: Abstraction has 197 states and 934 transitions. [2023-10-12 17:14:22,347 INFO L430 stractBuchiCegarLoop]: Abstraction has 197 states and 934 transitions. [2023-10-12 17:14:22,347 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:14:22,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 197 states and 934 transitions. [2023-10-12 17:14:22,348 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 15 [2023-10-12 17:14:22,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:22,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:22,349 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-10-12 17:14:22,349 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:22,349 INFO L748 eck$LassoCheckResult]: Stem: 2018#[$Ultimate##0]don't care [145] $Ultimate##0-->L77: Formula: (and (= v_M2_8 v_N2_8) (= v_j1_22 0) (= v_counter1_38 0) (= v_M1_14 v_N1_14) (= v_i2_26 0) (= v_j2_24 0) (= v_counter2_38 0) (= v_i1_22 0)) InVars {counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} OutVars{counter2=v_counter2_38, counter1=v_counter1_38, j2=v_j2_24, i1=v_i1_22, i2=v_i2_26, j1=v_j1_22, N2=v_N2_8, M1=v_M1_14, M2=v_M2_8, N1=v_N1_14} AuxVars[] AssignedVars[] 1910#[L77]don't care [114] L77-->L24-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 1912#[L24-1, L77-1]don't care [117] L77-1-->L35-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 1976#[L78, L35-1, L24-1]don't care [120] L78-->L47-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 2022#[L47-1, L35-1, L79, L24-1]don't care [123] L79-->L58-1: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2] 1868#[L47-1, L80, L58-1, L24-1, L35-1]don't care [2023-10-12 17:14:22,349 INFO L750 eck$LassoCheckResult]: Loop: 1868#[L47-1, L80, L58-1, L24-1, L35-1]don't care [139] L58-1-->L58-1: Formula: (and (= v_j2_16 (+ v_j2_17 1)) (= (+ v_counter2_28 1) v_counter2_29) (< 0 v_counter2_29) (< v_j2_17 v_M2_6)) InVars {counter2=v_counter2_29, j2=v_j2_17, M2=v_M2_6} OutVars{counter2=v_counter2_28, j2=v_j2_16, M2=v_M2_6} AuxVars[] AssignedVars[counter2, j2] 1868#[L47-1, L80, L58-1, L24-1, L35-1]don't care [2023-10-12 17:14:22,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash 166052150, now seen corresponding path program 1 times [2023-10-12 17:14:22,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302948515] [2023-10-12 17:14:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,370 INFO L85 PathProgramCache]: Analyzing trace with hash 170, now seen corresponding path program 1 times [2023-10-12 17:14:22,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551154510] [2023-10-12 17:14:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,374 INFO L85 PathProgramCache]: Analyzing trace with hash 852649493, now seen corresponding path program 1 times [2023-10-12 17:14:22,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888302571] [2023-10-12 17:14:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,406 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 17:14:22,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:14:22,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888302571] [2023-10-12 17:14:22,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888302571] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:14:22,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:14:22,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:14:22,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062354710] [2023-10-12 17:14:22,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:14:22,433 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 17:14:22,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-10-12 17:14:22,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:22,465 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,465 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,465 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,465 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,465 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:22,465 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,466 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,466 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,466 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:14:22,466 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,466 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,466 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 17:14:22,470 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 17:14:22,483 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,484 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:22,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,485 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:22,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-10-12 17:14:22,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:22,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-10-12 17:14:22,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,571 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:22,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-10-12 17:14:22,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:22,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,698 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:22,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:22,704 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,704 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:22,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,705 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,705 INFO L133 ssoRankerPreferences]: Filename of dumped script: difference-det.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:14:22,705 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,705 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,705 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 17:14:22,710 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 17:14:22,728 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,728 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:22,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,734 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:22,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-10-12 17:14:22,739 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 17:14:22,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:22,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:22,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:22,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:22,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:22,758 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:22,758 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:22,760 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:22,763 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:14:22,763 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:22,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,801 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:22,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-10-12 17:14:22,814 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:22,814 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:22,814 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:22,814 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j2, M2) = -1*j2 + 1*M2 Supporting invariants [] [2023-10-12 17:14:22,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:22,820 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:22,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,854 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,854 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 17:14:22,855 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 17:14:22,855 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 197 states and 934 transitions. cyclomatic complexity: 811 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:22,886 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 197 states and 934 transitions. cyclomatic complexity: 811. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 448 states and 1961 transitions. Complement of second has 4 states. [2023-10-12 17:14:22,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2023-10-12 17:14:22,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:22,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 6 letters. Loop has 1 letters. [2023-10-12 17:14:22,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:14:22,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 448 states and 1961 transitions. [2023-10-12 17:14:22,893 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:22,893 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 448 states to 0 states and 0 transitions. [2023-10-12 17:14:22,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:14:22,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:14:22,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:14:22,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:14:22,893 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,893 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:14:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:14:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:14:22,894 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:22,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:14:22,894 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-10-12 17:14:22,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-10-12 17:14:22,895 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:22,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-10-12 17:14:22,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:14:22,895 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:14:22,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:14:22,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:14:22,895 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,895 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-10-12 17:14:22,896 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,896 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:14:22,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:14:22,896 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:22,896 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:14:22,901 INFO L201 PluginConnector]: Adding new model difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:14:22 BoogieIcfgContainer [2023-10-12 17:14:22,901 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:14:22,903 INFO L158 Benchmark]: Toolchain (without parser) took 3024.56ms. Allocated memory was 180.4MB in the beginning and 266.3MB in the end (delta: 86.0MB). Free memory was 129.9MB in the beginning and 204.4MB in the end (delta: -74.5MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2023-10-12 17:14:22,906 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.23ms. Allocated memory is still 180.4MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:14:22,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.09ms. Allocated memory is still 180.4MB. Free memory was 129.9MB in the beginning and 128.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-10-12 17:14:22,908 INFO L158 Benchmark]: Boogie Preprocessor took 19.13ms. Allocated memory is still 180.4MB. Free memory was 128.3MB in the beginning and 127.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:14:22,909 INFO L158 Benchmark]: RCFGBuilder took 195.24ms. Allocated memory is still 180.4MB. Free memory was 127.1MB in the beginning and 116.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:14:22,909 INFO L158 Benchmark]: BuchiAutomizer took 2787.50ms. Allocated memory was 180.4MB in the beginning and 266.3MB in the end (delta: 86.0MB). Free memory was 116.3MB in the beginning and 204.4MB in the end (delta: -88.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:14:22,912 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23ms. Allocated memory is still 180.4MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.09ms. Allocated memory is still 180.4MB. Free memory was 129.9MB in the beginning and 128.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.13ms. Allocated memory is still 180.4MB. Free memory was 128.3MB in the beginning and 127.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 195.24ms. Allocated memory is still 180.4MB. Free memory was 127.1MB in the beginning and 116.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 2787.50ms. Allocated memory was 180.4MB in the beginning and 266.3MB in the end (delta: 86.0MB). Free memory was 116.3MB in the beginning and 204.4MB in the end (delta: -88.2MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function N1 + -1 * i1 and consists of 4 locations. One deterministic module has affine ranking function -1 * i2 + N2 and consists of 3 locations. One deterministic module has affine ranking function -1 * j1 + M1 and consists of 3 locations. One deterministic module has affine ranking function -1 * j2 + M2 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 135 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 154 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 95ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s 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, 45 PlacesBefore, 28 PlacesAfterwards, 36 TransitionsBefore, 19 TransitionsAfterwards, 288 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 18 TotalNumberOfCompositions, 279 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 279, independent: 279, independent conditional: 0, independent unconditional: 279, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 279, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 162, unknown conditional: 0, unknown unconditional: 162] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:14:22,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-10-12 17:14:23,128 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...