/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/figure1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:14:20,199 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:14:20,246 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 17:14:20,267 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:14:20,267 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:14:20,273 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:14:20,275 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:14:20,275 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:14:20,276 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:14:20,279 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:14:20,279 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:14:20,280 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:14:20,280 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:14:20,281 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:14:20,282 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:14:20,282 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:14:20,283 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:14:20,283 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:14:20,283 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:14:20,283 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:14:20,283 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:14:20,285 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:14:20,285 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:14:20,285 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:14:20,285 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:14:20,286 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:14:20,286 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:14:20,286 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:14:20,286 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:14:20,287 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:14:20,288 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:14:20,288 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:14:20,288 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:14:20,289 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:14:20,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:14:20,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:14:20,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:14:20,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:14:20,533 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:14:20,534 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:14:20,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1.wvr.bpl [2023-10-12 17:14:20,536 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1.wvr.bpl' [2023-10-12 17:14:20,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:14:20,564 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:14:20,567 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:20,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:14:20,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:14:20,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,591 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:14:20,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:20,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:14:20,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:14:20,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:14:20,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:14:20,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:14:20,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:14:20,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:14:20,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,654 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 17:14:20,669 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 17:14:20,696 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:14:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:14:20,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:14:20,700 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:14:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:14:20,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:14:20,701 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:14:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:14:20,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:14:20,703 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 17:14:20,744 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:14:20,747 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:14:20,841 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:14:20,858 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:14:20,858 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:14:20,860 INFO L201 PluginConnector]: Adding new model figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:20 BoogieIcfgContainer [2023-10-12 17:14:20,860 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:14:20,861 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:14:20,861 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:14:20,864 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:14:20,864 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:20,864 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/2) ... [2023-10-12 17:14:20,865 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7efa4e9 and model type figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:14:20, skipping insertion in model container [2023-10-12 17:14:20,865 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:20,866 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:20" (2/2) ... [2023-10-12 17:14:20,867 INFO L332 chiAutomizerObserver]: Analyzing ICFG figure1.wvr.bpl [2023-10-12 17:14:20,924 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:14:20,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 64 flow [2023-10-12 17:14:20,988 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-10-12 17:14:20,989 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:14:20,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:14:20,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 64 flow [2023-10-12 17:14:20,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2023-10-12 17:14:21,002 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:14:21,030 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 20 transitions, 52 flow [2023-10-12 17:14:21,036 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 20 transitions, 52 flow [2023-10-12 17:14:21,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 52 flow [2023-10-12 17:14:21,045 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-10-12 17:14:21,045 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:14:21,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2023-10-12 17:14:21,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-10-12 17:14:21,247 INFO L134 LiptonReduction]: Checked pairs total: 37 [2023-10-12 17:14:21,247 INFO L136 LiptonReduction]: Total number of compositions: 10 [2023-10-12 17:14:21,264 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:14:21,264 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:14:21,264 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:14:21,264 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:14:21,264 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:14:21,264 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:14:21,265 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:14:21,265 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:14:21,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:14:21,289 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2023-10-12 17:14:21,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:21,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:21,294 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:21,294 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:21,294 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:14:21,294 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 12 states, but on-demand construction may add more states [2023-10-12 17:14:21,296 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2023-10-12 17:14:21,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:21,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:21,296 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:21,296 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:21,301 INFO L748 eck$LassoCheckResult]: Stem: 30#[$Ultimate##0]don't care [77] $Ultimate##0-->L45: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_22 0) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} AuxVars[] AssignedVars[] 33#[L45]don't care [62] L45-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 35#[L45-1, L19-1]don't care [2023-10-12 17:14:21,301 INFO L750 eck$LassoCheckResult]: Loop: 35#[L45-1, L19-1]don't care [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 35#[L45-1, L19-1]don't care [2023-10-12 17:14:21,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,306 INFO L85 PathProgramCache]: Analyzing trace with hash 3410, now seen corresponding path program 1 times [2023-10-12 17:14:21,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124837387] [2023-10-12 17:14:21,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,315 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 17:14:21,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,429 INFO L85 PathProgramCache]: Analyzing trace with hash 100, now seen corresponding path program 1 times [2023-10-12 17:14:21,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103724102] [2023-10-12 17:14:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash 105779, now seen corresponding path program 1 times [2023-10-12 17:14:21,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242005005] [2023-10-12 17:14:21,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,556 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,556 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,557 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,557 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:21,557 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,557 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,557 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:21,557 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,557 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,571 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 17:14:21,587 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 17:14:21,631 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,632 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:21,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,641 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 17:14:21,646 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 17:14:21,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:21,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-10-12 17:14:21,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,665 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 17:14:21,666 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 17:14:21,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:21,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,695 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:14:21,696 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {counter=0} Honda state: {counter=0} Generalized eigenvectors: [{counter=1}, {counter=-2}, {counter=2}] Lambdas: [1, 2, 1] Nus: [0, 1] [2023-10-12 17:14:21,705 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 17:14:21,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,707 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 17:14:21,715 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 17:14:21,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:21,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:21,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,743 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 17:14:21,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:21,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,768 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 17:14:21,900 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:21,903 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 17:14:21,903 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,903 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,903 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,903 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,903 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:21,903 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,904 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,904 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,904 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:21,904 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,904 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,905 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 17:14:21,911 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 17:14:21,943 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,948 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:21,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,953 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 17:14:21,956 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 17:14:21,958 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 17:14:21,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,985 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:14:21,988 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 17:14:21,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,990 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 17:14:21,996 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 17:14:21,996 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 17:14:22,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:22,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:22,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:22,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:22,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:22,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:22,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:22,023 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:22,026 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:22,026 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [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 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 17:14:22,031 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 17:14:22,032 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:22,032 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:22,032 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:22,033 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N1, i1) = 1*N1 - 1*i1 Supporting invariants [] [2023-10-12 17:14:22,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-10-12 17:14:22,040 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:22,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,085 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,086 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 17:14:22,109 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 17:14:22,111 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 12 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 17:14:22,164 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 12 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 29 states and 59 transitions. Complement of second has 5 states. [2023-10-12 17:14:22,167 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 17:14:22,172 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 17:14:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-10-12 17:14:22,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:14:22,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:14:22,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:14:22,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 59 transitions. [2023-10-12 17:14:22,183 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:22,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 26 transitions. [2023-10-12 17:14:22,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-10-12 17:14:22,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-10-12 17:14:22,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 26 transitions. [2023-10-12 17:14:22,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:22,190 INFO L219 hiAutomatonCegarLoop]: Abstraction has 12 states and 26 transitions. [2023-10-12 17:14:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 26 transitions. [2023-10-12 17:14:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-10-12 17:14:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 17:14:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 22 transitions. [2023-10-12 17:14:22,213 INFO L241 hiAutomatonCegarLoop]: Abstraction has 10 states and 22 transitions. [2023-10-12 17:14:22,213 INFO L430 stractBuchiCegarLoop]: Abstraction has 10 states and 22 transitions. [2023-10-12 17:14:22,213 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:14:22,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 22 transitions. [2023-10-12 17:14:22,215 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:22,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:22,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:22,216 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:14:22,216 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:22,217 INFO L748 eck$LassoCheckResult]: Stem: 116#[$Ultimate##0]don't care [77] $Ultimate##0-->L45: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_22 0) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} AuxVars[] AssignedVars[] 118#[L45]don't care [62] L45-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 120#[L45-1, L19-1]don't care [65] L45-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 124#[L19-1, L46, L30-1]don't care [2023-10-12 17:14:22,217 INFO L750 eck$LassoCheckResult]: Loop: 124#[L19-1, L46, L30-1]don't care [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 124#[L19-1, L46, L30-1]don't care [2023-10-12 17:14:22,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash 105775, now seen corresponding path program 1 times [2023-10-12 17:14:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318475399] [2023-10-12 17:14:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash 103, now seen corresponding path program 1 times [2023-10-12 17:14:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109458459] [2023-10-12 17:14:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash 3279097, now seen corresponding path program 1 times [2023-10-12 17:14:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689184633] [2023-10-12 17:14:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,325 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 17:14:22,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:14:22,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689184633] [2023-10-12 17:14:22,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689184633] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:14:22,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:14:22,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:14:22,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368330932] [2023-10-12 17:14:22,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:14:22,363 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,364 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,364 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,364 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,364 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:22,364 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,364 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,364 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,364 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:22,365 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,365 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,366 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 17:14:22,372 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 17:14:22,405 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,406 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:22,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,407 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 17:14:22,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:22,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,430 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 17:14:22,445 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 17:14:22,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,447 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 17:14:22,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:22,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,472 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 17:14:22,482 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:22,489 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 17:14:22,490 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,490 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,490 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,490 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,490 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:22,490 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,490 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,490 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,490 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:22,490 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,490 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,491 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 17:14:22,498 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 17:14:22,529 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,529 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:22,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,531 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 17:14:22,533 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 17:14:22,546 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:14:22,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:22,555 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:22,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:22,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:22,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:22,557 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:22,557 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:22,570 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:22,573 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:22,573 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:22,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,623 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 17:14:22,631 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:22,631 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:22,631 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:22,631 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter) = 1*counter Supporting invariants [] [2023-10-12 17:14:22,635 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 17:14:22,636 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 17:14:22,637 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:22,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,666 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,667 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 17:14:22,668 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 17:14:22,668 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 22 transitions. cyclomatic complexity: 17 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 17:14:22,691 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 22 transitions. cyclomatic complexity: 17. 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 21 states and 41 transitions. Complement of second has 5 states. [2023-10-12 17:14:22,691 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 17:14:22,692 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 17:14:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-10-12 17:14:22,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:14:22,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:14:22,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:14:22,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,693 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 41 transitions. [2023-10-12 17:14:22,699 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:22,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 10 states and 19 transitions. [2023-10-12 17:14:22,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-10-12 17:14:22,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-10-12 17:14:22,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 19 transitions. [2023-10-12 17:14:22,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:22,701 INFO L219 hiAutomatonCegarLoop]: Abstraction has 10 states and 19 transitions. [2023-10-12 17:14:22,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 19 transitions. [2023-10-12 17:14:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-10-12 17:14:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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 17:14:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2023-10-12 17:14:22,704 INFO L241 hiAutomatonCegarLoop]: Abstraction has 9 states and 17 transitions. [2023-10-12 17:14:22,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:14:22,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:14:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:14:22,710 INFO L87 Difference]: Start difference. First operand 9 states and 17 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 17:14:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:14:22,727 INFO L93 Difference]: Finished difference Result 10 states and 18 transitions. [2023-10-12 17:14:22,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 18 transitions. [2023-10-12 17:14:22,727 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:22,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 18 transitions. [2023-10-12 17:14:22,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-10-12 17:14:22,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-10-12 17:14:22,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 18 transitions. [2023-10-12 17:14:22,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:22,728 INFO L219 hiAutomatonCegarLoop]: Abstraction has 10 states and 18 transitions. [2023-10-12 17:14:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 18 transitions. [2023-10-12 17:14:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-10-12 17:14:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 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 17:14:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2023-10-12 17:14:22,731 INFO L241 hiAutomatonCegarLoop]: Abstraction has 10 states and 18 transitions. [2023-10-12 17:14:22,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:14:22,736 INFO L430 stractBuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2023-10-12 17:14:22,737 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:14:22,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 18 transitions. [2023-10-12 17:14:22,738 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:22,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:22,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:22,738 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-10-12 17:14:22,738 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:22,739 INFO L748 eck$LassoCheckResult]: Stem: 217#[$Ultimate##0]don't care [77] $Ultimate##0-->L45: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_22 0) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} AuxVars[] AssignedVars[] 219#[L45]don't care [62] L45-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 221#[L45-1, L19-1]don't care [65] L45-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 227#[L19-1, L46, L30-1]don't care [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 229#[L19-1, L46, L30-1]don't care [68] L19-1-->thread1EXIT: Formula: (<= v_N1_4 v_i1_10) InVars {i1=v_i1_10, N1=v_N1_4} OutVars{i1=v_i1_10, N1=v_N1_4} AuxVars[] AssignedVars[] 223#[L30-1, L46, thread1EXIT]don't care [2023-10-12 17:14:22,739 INFO L750 eck$LassoCheckResult]: Loop: 223#[L30-1, L46, thread1EXIT]don't care [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 223#[L30-1, L46, thread1EXIT]don't care [2023-10-12 17:14:22,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash 101651982, now seen corresponding path program 1 times [2023-10-12 17:14:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272357875] [2023-10-12 17:14:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,767 INFO L85 PathProgramCache]: Analyzing trace with hash 103, now seen corresponding path program 2 times [2023-10-12 17:14:22,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290828667] [2023-10-12 17:14:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1143755782, now seen corresponding path program 1 times [2023-10-12 17:14:22,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152789618] [2023-10-12 17:14:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,843 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,843 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,843 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,844 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,844 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:22,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,847 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,847 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,847 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:22,847 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,847 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,848 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 17:14:22,853 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 17:14:22,882 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,883 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:22,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,891 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 17:14:22,894 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 17:14:22,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:22,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:22,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,925 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 17:14:22,933 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 17:14:22,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:22,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:23,049 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:23,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:23,053 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:23,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:23,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:23,054 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:23,054 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:23,054 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:23,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:23,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:23,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:23,054 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:23,055 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 17:14:23,060 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 17:14:23,085 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:23,086 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:23,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,087 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 17:14:23,088 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 17:14:23,092 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 17:14:23,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:23,099 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:23,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:23,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:23,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:23,100 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:23,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:23,102 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:23,120 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:14:23,120 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:23,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,122 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 17:14:23,125 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 17:14:23,125 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:23,125 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:23,125 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:23,125 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N2, i2) = 1*N2 - 1*i2 Supporting invariants [] [2023-10-12 17:14:23,129 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 17:14:23,130 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:23,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:23,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:23,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:23,163 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:23,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:23,163 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 17:14:23,164 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 17:14:23,164 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 18 transitions. cyclomatic complexity: 13 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 17:14:23,175 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 18 transitions. cyclomatic complexity: 13. 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 13 states and 23 transitions. Complement of second has 4 states. [2023-10-12 17:14:23,176 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 17:14:23,176 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 17:14:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-10-12 17:14:23,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:23,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:23,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2023-10-12 17:14:23,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:23,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:14:23,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:23,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 23 transitions. [2023-10-12 17:14:23,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:23,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 8 states and 13 transitions. [2023-10-12 17:14:23,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-10-12 17:14:23,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-10-12 17:14:23,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 13 transitions. [2023-10-12 17:14:23,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:23,179 INFO L219 hiAutomatonCegarLoop]: Abstraction has 8 states and 13 transitions. [2023-10-12 17:14:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 13 transitions. [2023-10-12 17:14:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-10-12 17:14:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 17:14:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2023-10-12 17:14:23,180 INFO L241 hiAutomatonCegarLoop]: Abstraction has 8 states and 13 transitions. [2023-10-12 17:14:23,180 INFO L430 stractBuchiCegarLoop]: Abstraction has 8 states and 13 transitions. [2023-10-12 17:14:23,180 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:14:23,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 13 transitions. [2023-10-12 17:14:23,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:23,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:23,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:23,181 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-10-12 17:14:23,181 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:23,181 INFO L748 eck$LassoCheckResult]: Stem: 284#[$Ultimate##0]don't care [77] $Ultimate##0-->L45: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_22 0) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} AuxVars[] AssignedVars[] 286#[L45]don't care [62] L45-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 288#[L45-1, L19-1]don't care [65] L45-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 292#[L19-1, L46, L30-1]don't care [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 294#[L19-1, L46, L30-1]don't care [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 290#[L19-1, L46, L30-1]don't care [2023-10-12 17:14:23,182 INFO L750 eck$LassoCheckResult]: Loop: 290#[L19-1, L46, L30-1]don't care [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 290#[L19-1, L46, L30-1]don't care [2023-10-12 17:14:23,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash 101651986, now seen corresponding path program 1 times [2023-10-12 17:14:23,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:23,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478516068] [2023-10-12 17:14:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:23,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:23,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:23,192 INFO L85 PathProgramCache]: Analyzing trace with hash 103, now seen corresponding path program 3 times [2023-10-12 17:14:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808607137] [2023-10-12 17:14:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:23,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:23,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1143755658, now seen corresponding path program 2 times [2023-10-12 17:14:23,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:23,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305501360] [2023-10-12 17:14:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:23,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:14:23,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:14:23,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305501360] [2023-10-12 17:14:23,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305501360] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:14:23,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:14:23,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:14:23,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867514735] [2023-10-12 17:14:23,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:14:23,282 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:23,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:23,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:23,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:23,282 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:23,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:23,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:23,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:14:23,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:23,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:23,284 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 17:14:23,289 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 17:14:23,317 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:23,318 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:23,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,321 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 17:14:23,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:23,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:23,334 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 17:14:23,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:23,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,354 INFO L229 MonitoredProcess]: Starting monitored process 18 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 17:14:23,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:23,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:23,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-10-12 17:14:23,380 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:23,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-10-12 17:14:23,385 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:23,385 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:23,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:23,385 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:23,385 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:23,385 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:23,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:23,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:14:23,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:23,386 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:23,386 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 17:14:23,392 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 17:14:23,422 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:23,422 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:23,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,423 INFO L229 MonitoredProcess]: Starting monitored process 19 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 17:14:23,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-10-12 17:14:23,436 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 17:14:23,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:23,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:23,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:23,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:23,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:23,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:23,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:23,461 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:23,464 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:23,464 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:23,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,471 INFO L229 MonitoredProcess]: Starting monitored process 20 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 17:14:23,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-10-12 17:14:23,477 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:23,477 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:23,477 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:23,477 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter) = 1*counter Supporting invariants [] [2023-10-12 17:14:23,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:23,485 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:23,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:23,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:23,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:23,523 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:23,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:23,523 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 17:14:23,524 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 17:14:23,524 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 13 transitions. cyclomatic complexity: 8 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 17:14:23,535 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 13 transitions. cyclomatic complexity: 8. 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 13 states and 22 transitions. Complement of second has 3 states. [2023-10-12 17:14:23,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:23,536 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 17:14:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 6 transitions. [2023-10-12 17:14:23,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:23,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:23,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2023-10-12 17:14:23,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:23,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:14:23,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:23,537 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 22 transitions. [2023-10-12 17:14:23,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:23,538 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 11 states and 19 transitions. [2023-10-12 17:14:23,538 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-10-12 17:14:23,538 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-10-12 17:14:23,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 19 transitions. [2023-10-12 17:14:23,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:23,538 INFO L219 hiAutomatonCegarLoop]: Abstraction has 11 states and 19 transitions. [2023-10-12 17:14:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 19 transitions. [2023-10-12 17:14:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2023-10-12 17:14:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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 17:14:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2023-10-12 17:14:23,539 INFO L241 hiAutomatonCegarLoop]: Abstraction has 9 states and 15 transitions. [2023-10-12 17:14:23,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:14:23,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:14:23,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:14:23,540 INFO L87 Difference]: Start difference. First operand 9 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 17:14:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:14:23,552 INFO L93 Difference]: Finished difference Result 14 states and 23 transitions. [2023-10-12 17:14:23,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 23 transitions. [2023-10-12 17:14:23,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:23,553 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 22 transitions. [2023-10-12 17:14:23,553 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-10-12 17:14:23,553 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-10-12 17:14:23,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 22 transitions. [2023-10-12 17:14:23,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:23,554 INFO L219 hiAutomatonCegarLoop]: Abstraction has 13 states and 22 transitions. [2023-10-12 17:14:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 22 transitions. [2023-10-12 17:14:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-10-12 17:14:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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 17:14:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 22 transitions. [2023-10-12 17:14:23,557 INFO L241 hiAutomatonCegarLoop]: Abstraction has 13 states and 22 transitions. [2023-10-12 17:14:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-10-12 17:14:23,558 INFO L430 stractBuchiCegarLoop]: Abstraction has 13 states and 22 transitions. [2023-10-12 17:14:23,558 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:14:23,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 22 transitions. [2023-10-12 17:14:23,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:23,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:23,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:23,559 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2023-10-12 17:14:23,559 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:23,559 INFO L748 eck$LassoCheckResult]: Stem: 381#[$Ultimate##0]don't care [77] $Ultimate##0-->L45: Formula: (and (= v_counter_34 0) (= v_i1_18 0) (= v_i2_22 0) (= v_N2_10 v_N1_10)) InVars {counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} OutVars{counter=v_counter_34, i1=v_i1_18, i2=v_i2_22, N2=v_N2_10, N1=v_N1_10} AuxVars[] AssignedVars[] 383#[L45]don't care [62] L45-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 385#[L45-1, L19-1]don't care [65] L45-1-->L30-1: 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] 389#[L19-1, L46, L30-1]don't care [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 391#[L19-1, L46, L30-1]don't care [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 397#[L19-1, L46, L30-1]don't care [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 401#[L19-1, L46, L30-1]don't care [69] L19-1-->L19-1: Formula: (and (< v_i1_13 v_N1_6) (= v_i1_12 (+ v_i1_13 1)) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_6} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_6} AuxVars[] AssignedVars[counter, i1] 399#[L19-1, L46, L30-1]don't care [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 387#[L19-1, L46, L30-1]don't care [2023-10-12 17:14:23,559 INFO L750 eck$LassoCheckResult]: Loop: 387#[L19-1, L46, L30-1]don't care [72] L30-1-->L30-1: Formula: (and (= v_i2_18 (+ v_i2_19 1)) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_19 v_N2_8)) InVars {counter=v_counter_25, i2=v_i2_19, N2=v_N2_8} OutVars{counter=v_counter_24, i2=v_i2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter, i2] 387#[L19-1, L46, L30-1]don't care [2023-10-12 17:14:23,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:23,560 INFO L85 PathProgramCache]: Analyzing trace with hash 362353276, now seen corresponding path program 3 times [2023-10-12 17:14:23,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:23,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074797077] [2023-10-12 17:14:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:23,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:23,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash 103, now seen corresponding path program 4 times [2023-10-12 17:14:23,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:23,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987713305] [2023-10-12 17:14:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:23,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:23,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1651950260, now seen corresponding path program 4 times [2023-10-12 17:14:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:23,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202361368] [2023-10-12 17:14:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:23,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:23,616 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:23,616 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:23,616 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:23,616 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:23,616 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:23,616 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,616 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:23,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:23,616 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:14:23,617 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:23,617 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:23,617 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 17:14:23,622 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 17:14:23,646 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:23,647 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:23,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,648 INFO L229 MonitoredProcess]: Starting monitored process 21 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 17:14:23,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:23,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:23,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-10-12 17:14:23,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:23,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,695 INFO L229 MonitoredProcess]: Starting monitored process 22 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 17:14:23,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-10-12 17:14:23,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:23,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:23,765 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:23,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:23,769 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:23,769 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:23,769 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:23,769 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:23,769 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:23,769 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,769 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:23,769 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:23,769 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:14:23,769 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:23,769 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:23,770 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 17:14:23,793 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 17:14:23,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-10-12 17:14:23,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:23,805 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 17:14:23,807 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Exception during sending of exit command (exit): Broken pipe [2023-10-12 17:14:23,822 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 17:14:23,873 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:23,873 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:23,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,877 INFO L229 MonitoredProcess]: Starting monitored process 23 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 17:14:23,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-10-12 17:14:23,883 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 17:14:23,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:23,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:23,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:23,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:23,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:23,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:23,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:23,908 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:23,917 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:23,917 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:23,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:24,013 INFO L229 MonitoredProcess]: Starting monitored process 24 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 17:14:24,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-10-12 17:14:24,016 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:24,016 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:24,016 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:24,016 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter) = 1*counter Supporting invariants [] [2023-10-12 17:14:24,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:24,020 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:24,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:24,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:24,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:24,073 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:24,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:24,073 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 17:14:24,073 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 17:14:24,074 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 22 transitions. cyclomatic complexity: 14 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 17:14:24,086 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 22 transitions. cyclomatic complexity: 14. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 15 states and 25 transitions. Complement of second has 3 states. [2023-10-12 17:14:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 17:14:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 6 transitions. [2023-10-12 17:14:24,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2023-10-12 17:14:24,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:24,088 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-10-12 17:14:24,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:24,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:24,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:24,127 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:24,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:24,128 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 17:14:24,128 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:14:24,128 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 22 transitions. cyclomatic complexity: 14 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 17:14:24,146 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 22 transitions. cyclomatic complexity: 14. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 15 states and 25 transitions. Complement of second has 3 states. [2023-10-12 17:14:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 17:14:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 6 transitions. [2023-10-12 17:14:24,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2023-10-12 17:14:24,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:24,152 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-10-12 17:14:24,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:24,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:24,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:24,190 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:24,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:24,190 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 17:14:24,192 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:14:24,192 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 22 transitions. cyclomatic complexity: 14 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 17:14:24,204 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 22 transitions. cyclomatic complexity: 14. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14 states and 23 transitions. Complement of second has 2 states. [2023-10-12 17:14:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 17:14:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2023-10-12 17:14:24,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 8 letters. Loop has 1 letters. [2023-10-12 17:14:24,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:24,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 9 letters. Loop has 1 letters. [2023-10-12 17:14:24,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:24,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2023-10-12 17:14:24,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:24,208 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 23 transitions. [2023-10-12 17:14:24,209 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:24,209 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2023-10-12 17:14:24,209 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:14:24,209 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:14:24,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:14:24,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:14:24,210 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:24,210 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:24,210 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:24,210 INFO L337 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-10-12 17:14:24,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:14:24,210 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:24,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:14:24,217 INFO L201 PluginConnector]: Adding new model figure1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:14:24 BoogieIcfgContainer [2023-10-12 17:14:24,217 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:14:24,217 INFO L158 Benchmark]: Toolchain (without parser) took 3653.84ms. Allocated memory was 196.1MB in the beginning and 263.2MB in the end (delta: 67.1MB). Free memory was 141.7MB in the beginning and 209.5MB in the end (delta: -67.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:14:24,218 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.31ms. Allocated memory is still 196.1MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:14:24,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.33ms. Allocated memory is still 196.1MB. Free memory was 141.6MB in the beginning and 140.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:14:24,218 INFO L158 Benchmark]: Boogie Preprocessor took 20.07ms. Allocated memory is still 196.1MB. Free memory was 140.0MB in the beginning and 139.0MB in the end (delta: 972.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:14:24,218 INFO L158 Benchmark]: RCFGBuilder took 244.36ms. Allocated memory is still 196.1MB. Free memory was 138.9MB in the beginning and 160.7MB in the end (delta: -21.8MB). Peak memory consumption was 15.9MB. Max. memory is 8.0GB. [2023-10-12 17:14:24,219 INFO L158 Benchmark]: BuchiAutomizer took 3356.11ms. Allocated memory was 196.1MB in the beginning and 263.2MB in the end (delta: 67.1MB). Free memory was 160.5MB in the beginning and 209.5MB in the end (delta: -49.0MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-10-12 17:14:24,219 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 0.31ms. Allocated memory is still 196.1MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.33ms. Allocated memory is still 196.1MB. Free memory was 141.6MB in the beginning and 140.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.07ms. Allocated memory is still 196.1MB. Free memory was 140.0MB in the beginning and 139.0MB in the end (delta: 972.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 244.36ms. Allocated memory is still 196.1MB. Free memory was 138.9MB in the beginning and 160.7MB in the end (delta: -21.8MB). Peak memory consumption was 15.9MB. Max. memory is 8.0GB. * BuchiAutomizer took 3356.11ms. Allocated memory was 196.1MB in the beginning and 263.2MB in the end (delta: 67.1MB). Free memory was 160.5MB in the beginning and 209.5MB in the end (delta: -49.0MB). Peak memory consumption was 17.8MB. 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 7 terminating modules (2 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function N1 + -1 * i1 and consists of 4 locations. One deterministic module has affine ranking function counter and consists of 3 locations. One deterministic module has affine ranking function -1 * i2 + N2 and consists of 3 locations. One deterministic module has affine ranking function counter and consists of 2 locations. One nondeterministic module has affine ranking function counter and consists of 2 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 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, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s 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: 0.2s, 25 PlacesBefore, 16 PlacesAfterwards, 20 TransitionsBefore, 11 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 6 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, independent: 37, independent conditional: 0, independent unconditional: 37, 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: 28, independent: 28, independent conditional: 0, independent unconditional: 28, 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: 28, independent: 28, independent conditional: 0, independent unconditional: 28, 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: 37, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 28, unknown conditional: 0, unknown unconditional: 28] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:14:24,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:24,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...