/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-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:14:19,667 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:14:19,739 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:14:19,775 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:14:19,775 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:14:19,776 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:14:19,777 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:14:19,777 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:14:19,778 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:14:19,781 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:14:19,781 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:14:19,782 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:14:19,782 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:14:19,783 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:14:19,784 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:14:19,784 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:14:19,784 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:14:19,784 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:14:19,784 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:14:19,785 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:14:19,786 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:14:19,786 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:14:19,786 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:14:19,786 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:14:19,787 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:14:19,787 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:14:19,787 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:14:19,787 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:14:19,787 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:14:19,788 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:14:19,788 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:14:19,789 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:14:19,789 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:14:19,790 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:14:19,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:14:20,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:14:20,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:14:20,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:14:20,039 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:14:20,040 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:14:20,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1-alt.wvr.bpl [2023-10-12 17:14:20,041 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1-alt.wvr.bpl' [2023-10-12 17:14:20,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:14:20,063 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:14:20,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:20,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:14:20,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:14:20,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,085 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:14:20,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:20,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:14:20,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:14:20,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:14:20,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,096 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:14:20,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:14:20,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:14:20,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:14:20,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/1) ... [2023-10-12 17:14:20,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,130 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 17:14:20,134 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 17:14:20,172 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:14:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:14:20,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:14:20,172 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:14:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:14:20,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:14:20,172 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:14:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:14:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:14:20,173 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 17:14:20,216 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:14:20,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:14:20,299 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:14:20,314 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:14:20,314 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:14:20,316 INFO L201 PluginConnector]: Adding new model figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:20 BoogieIcfgContainer [2023-10-12 17:14:20,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:14:20,318 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:14:20,318 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:14:20,324 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:14:20,324 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:20,324 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:20" (1/2) ... [2023-10-12 17:14:20,330 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3305b22 and model type figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:14:20, skipping insertion in model container [2023-10-12 17:14:20,330 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:20,330 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:20" (2/2) ... [2023-10-12 17:14:20,332 INFO L332 chiAutomizerObserver]: Analyzing ICFG figure1-alt.wvr.bpl [2023-10-12 17:14:20,373 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:14:20,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 25 transitions, 66 flow [2023-10-12 17:14:20,442 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-10-12 17:14:20,442 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:14:20,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 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. 0/18 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2023-10-12 17:14:20,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 25 transitions, 66 flow [2023-10-12 17:14:20,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2023-10-12 17:14:20,453 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:14:20,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 21 transitions, 54 flow [2023-10-12 17:14:20,473 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 21 transitions, 54 flow [2023-10-12 17:14:20,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 54 flow [2023-10-12 17:14:20,482 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-10-12 17:14:20,482 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:14:20,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 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. 0/18 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2023-10-12 17:14:20,483 INFO L119 LiptonReduction]: Number of co-enabled transitions 48 [2023-10-12 17:14:20,747 INFO L134 LiptonReduction]: Checked pairs total: 43 [2023-10-12 17:14:20,747 INFO L136 LiptonReduction]: Total number of compositions: 11 [2023-10-12 17:14:20,762 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:14:20,762 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:14:20,762 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:14:20,762 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:14:20,763 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:14:20,763 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:14:20,763 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:14:20,763 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:14:20,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:14:20,785 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2023-10-12 17:14:20,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:20,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:20,790 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:20,790 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:20,790 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:14:20,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 12 states, but on-demand construction may add more states [2023-10-12 17:14:20,792 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2023-10-12 17:14:20,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:20,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:20,792 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:20,792 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:20,796 INFO L748 eck$LassoCheckResult]: Stem: 31#[$Ultimate##0]don't care [80] $Ultimate##0-->L46: Formula: (and (= v_i2_24 0) (<= 0 v_N2_15) (= v_i1_18 0) (<= 0 v_N1_15) (= v_counter_36 0)) InVars {counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} OutVars{counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} AuxVars[] AssignedVars[] 34#[L46]don't care [64] L46-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 36#[L46-1, L19-1]don't care [2023-10-12 17:14:20,797 INFO L750 eck$LassoCheckResult]: Loop: 36#[L46-1, L19-1]don't care [71] L19-1-->L19-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (< v_i1_13 v_N1_7) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_7} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_7} AuxVars[] AssignedVars[counter, i1] 36#[L46-1, L19-1]don't care [2023-10-12 17:14:20,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash 3505, now seen corresponding path program 1 times [2023-10-12 17:14:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690355078] [2023-10-12 17:14:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash 102, now seen corresponding path program 1 times [2023-10-12 17:14:20,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972889568] [2023-10-12 17:14:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,896 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash 108726, now seen corresponding path program 1 times [2023-10-12 17:14:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792641343] [2023-10-12 17:14:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,910 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,977 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:20,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:20,977 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:20,977 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:20,978 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:20,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:20,978 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:20,978 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:20,978 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:20,978 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:20,991 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 17:14:21,009 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 17:14:21,044 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,044 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:21,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,049 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 17:14:21,050 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 17:14:21,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:21,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:21,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,077 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 17:14:21,080 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 17:14:21,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:21,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,123 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:14:21,123 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 17:14:21,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-10-12 17:14:21,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,128 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 17:14:21,130 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 17:14:21,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:21,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,144 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 17:14:21,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,147 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 17:14:21,149 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 17:14:21,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:21,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,266 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:21,271 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 17:14:21,272 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,272 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,272 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,272 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:21,272 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,272 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,276 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,277 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:21,277 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,277 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,278 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 17:14:21,282 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 17:14:21,320 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,327 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:21,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,333 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 17:14:21,337 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 17:14:21,338 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 17:14:21,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,346 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,347 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,347 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,347 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,363 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:14:21,366 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 17:14:21,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,367 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 17:14:21,369 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 17:14:21,370 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 17:14:21,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,390 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:21,394 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:21,394 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:14:21,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:21,409 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:21,410 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:21,410 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:21,410 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N1) = -1*i1 + 1*N1 Supporting invariants [] [2023-10-12 17:14:21,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-10-12 17:14:21,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:21,420 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:21,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,474 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:14:21,508 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:14:21,510 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 17:14:21,568 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 17:14:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-10-12 17:14:21,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:14:21,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:14:21,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:14:21,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 59 transitions. [2023-10-12 17:14:21,584 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:21,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 26 transitions. [2023-10-12 17:14:21,588 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-10-12 17:14:21,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-10-12 17:14:21,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 26 transitions. [2023-10-12 17:14:21,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:21,588 INFO L219 hiAutomatonCegarLoop]: Abstraction has 12 states and 26 transitions. [2023-10-12 17:14:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 26 transitions. [2023-10-12 17:14:21,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-10-12 17:14:21,603 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 17:14:21,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 22 transitions. [2023-10-12 17:14:21,604 INFO L241 hiAutomatonCegarLoop]: Abstraction has 10 states and 22 transitions. [2023-10-12 17:14:21,604 INFO L430 stractBuchiCegarLoop]: Abstraction has 10 states and 22 transitions. [2023-10-12 17:14:21,605 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:14:21,605 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 22 transitions. [2023-10-12 17:14:21,605 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:21,605 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:21,606 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:21,606 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:14:21,606 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:21,607 INFO L748 eck$LassoCheckResult]: Stem: 129#[$Ultimate##0]don't care [80] $Ultimate##0-->L46: Formula: (and (= v_i2_24 0) (<= 0 v_N2_15) (= v_i1_18 0) (<= 0 v_N1_15) (= v_counter_36 0)) InVars {counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} OutVars{counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} AuxVars[] AssignedVars[] 131#[L46]don't care [64] L46-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 115#[L46-1, L19-1]don't care [67] L46-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 117#[L47, L30-1, L19-1]don't care [2023-10-12 17:14:21,607 INFO L750 eck$LassoCheckResult]: Loop: 117#[L47, L30-1, L19-1]don't care [75] L30-1-->L30-1: Formula: (and (= (+ v_i2_17 1) v_i2_16) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_17 v_N2_9)) InVars {counter=v_counter_25, i2=v_i2_17, N2=v_N2_9} OutVars{counter=v_counter_24, i2=v_i2_16, N2=v_N2_9} AuxVars[] AssignedVars[counter, i2] 117#[L47, L30-1, L19-1]don't care [2023-10-12 17:14:21,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash 108722, now seen corresponding path program 1 times [2023-10-12 17:14:21,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163852199] [2023-10-12 17:14:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,624 INFO L85 PathProgramCache]: Analyzing trace with hash 106, now seen corresponding path program 1 times [2023-10-12 17:14:21,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068870701] [2023-10-12 17:14:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,628 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash 3370457, now seen corresponding path program 1 times [2023-10-12 17:14:21,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040122239] [2023-10-12 17:14:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:14:21,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:14:21,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040122239] [2023-10-12 17:14:21,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040122239] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:14:21,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:14:21,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:14:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101810937] [2023-10-12 17:14:21,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:14:21,702 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,703 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,703 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:21,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:21,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,704 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,706 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 17:14:21,713 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 17:14:21,777 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,777 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:21,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:21,781 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:21,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-10-12 17:14:21,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:21,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,812 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 17:14:21,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,814 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 17:14:21,817 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 17:14:21,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:21,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,853 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:21,858 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 17:14:21,859 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,859 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,859 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,859 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,859 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:21,860 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,860 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,860 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,860 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:21,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,860 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,861 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 17:14:21,869 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 17:14:21,901 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,901 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:21,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,903 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 17:14:21,918 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:14:21,918 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 17:14:21,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,932 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:21,934 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-10-12 17:14:21,934 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:14:21,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,936 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 17:14:21,937 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 17:14:21,939 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:21,939 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:21,939 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:21,939 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter) = 1*counter Supporting invariants [] [2023-10-12 17:14:21,944 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 17:14:21,945 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:21,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,978 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:14:21,979 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:14:21,979 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 17:14:21,994 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 17:14:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-10-12 17:14:21,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:14:21,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:14:21,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:14:21,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,996 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 41 transitions. [2023-10-12 17:14:21,998 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:21,998 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 10 states and 19 transitions. [2023-10-12 17:14:21,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-10-12 17:14:21,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-10-12 17:14:21,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 19 transitions. [2023-10-12 17:14:21,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:21,999 INFO L219 hiAutomatonCegarLoop]: Abstraction has 10 states and 19 transitions. [2023-10-12 17:14:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 19 transitions. [2023-10-12 17:14:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-10-12 17:14:22,000 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 17:14:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2023-10-12 17:14:22,000 INFO L241 hiAutomatonCegarLoop]: Abstraction has 9 states and 17 transitions. [2023-10-12 17:14:22,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:14:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:14:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:14:22,003 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 17:14:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:14:22,017 INFO L93 Difference]: Finished difference Result 10 states and 18 transitions. [2023-10-12 17:14:22,017 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 18 transitions. [2023-10-12 17:14:22,018 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:22,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 18 transitions. [2023-10-12 17:14:22,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-10-12 17:14:22,019 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-10-12 17:14:22,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 18 transitions. [2023-10-12 17:14:22,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:22,019 INFO L219 hiAutomatonCegarLoop]: Abstraction has 10 states and 18 transitions. [2023-10-12 17:14:22,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 18 transitions. [2023-10-12 17:14:22,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-10-12 17:14:22,020 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 17:14:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2023-10-12 17:14:22,021 INFO L241 hiAutomatonCegarLoop]: Abstraction has 10 states and 18 transitions. [2023-10-12 17:14:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:14:22,022 INFO L430 stractBuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2023-10-12 17:14:22,022 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:14:22,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 18 transitions. [2023-10-12 17:14:22,022 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:14:22,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:22,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:22,023 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-10-12 17:14:22,023 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:22,023 INFO L748 eck$LassoCheckResult]: Stem: 232#[$Ultimate##0]don't care [80] $Ultimate##0-->L46: Formula: (and (= v_i2_24 0) (<= 0 v_N2_15) (= v_i1_18 0) (<= 0 v_N1_15) (= v_counter_36 0)) InVars {counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} OutVars{counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} AuxVars[] AssignedVars[] 234#[L46]don't care [64] L46-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 216#[L46-1, L19-1]don't care [67] L46-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 218#[L47, L30-1, L19-1]don't care [71] L19-1-->L19-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (< v_i1_13 v_N1_7) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_7} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_7} AuxVars[] AssignedVars[counter, i1] 230#[L47, L30-1, L19-1]don't care [70] L19-1-->thread1EXIT: Formula: (<= v_N1_5 v_i1_10) InVars {i1=v_i1_10, N1=v_N1_5} OutVars{i1=v_i1_10, N1=v_N1_5} AuxVars[] AssignedVars[] 226#[L47, L30-1, thread1EXIT]don't care [2023-10-12 17:14:22,023 INFO L750 eck$LassoCheckResult]: Loop: 226#[L47, L30-1, thread1EXIT]don't care [75] L30-1-->L30-1: Formula: (and (= (+ v_i2_17 1) v_i2_16) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_17 v_N2_9)) InVars {counter=v_counter_25, i2=v_i2_17, N2=v_N2_9} OutVars{counter=v_counter_24, i2=v_i2_16, N2=v_N2_9} AuxVars[] AssignedVars[counter, i2] 226#[L47, L30-1, thread1EXIT]don't care [2023-10-12 17:14:22,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,024 INFO L85 PathProgramCache]: Analyzing trace with hash 104484113, now seen corresponding path program 1 times [2023-10-12 17:14:22,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000071318] [2023-10-12 17:14:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,030 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash 106, now seen corresponding path program 2 times [2023-10-12 17:14:22,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365807950] [2023-10-12 17:14:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1055959718, now seen corresponding path program 1 times [2023-10-12 17:14:22,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393077807] [2023-10-12 17:14:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,075 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,075 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,075 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,075 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,076 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:22,076 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,076 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,076 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,076 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:22,076 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,076 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,077 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 17:14:22,086 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 17:14:22,112 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,112 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:22,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,117 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 17:14:22,121 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 17:14:22,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:22,122 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,150 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 17:14:22,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,151 INFO L229 MonitoredProcess]: Starting monitored process 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 17:14:22,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:22,165 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,181 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 17:14:22,197 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:22,203 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 17:14:22,203 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,203 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,203 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,203 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,203 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:22,204 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,204 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,204 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,204 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:22,204 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,204 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,205 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 17:14:22,211 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 17:14:22,239 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,240 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:22,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,241 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:22,253 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 17:14:22,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:22,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:22,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:22,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:22,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:22,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:22,263 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:22,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-10-12 17:14:22,272 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:22,275 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:22,275 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:22,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,280 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:22,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-10-12 17:14:22,283 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:22,283 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:22,283 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:22,283 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter) = 1*counter Supporting invariants [] [2023-10-12 17:14:22,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:22,290 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:22,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,324 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,324 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 17:14:22,325 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 17:14:22,325 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 17:14:22,343 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 17:14:22,344 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 17:14:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-10-12 17:14:22,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:22,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2023-10-12 17:14:22,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:14:22,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 23 transitions. [2023-10-12 17:14:22,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:22,347 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 8 states and 13 transitions. [2023-10-12 17:14:22,347 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-10-12 17:14:22,347 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-10-12 17:14:22,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 13 transitions. [2023-10-12 17:14:22,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:22,348 INFO L219 hiAutomatonCegarLoop]: Abstraction has 8 states and 13 transitions. [2023-10-12 17:14:22,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 13 transitions. [2023-10-12 17:14:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-10-12 17:14:22,349 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 17:14:22,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2023-10-12 17:14:22,349 INFO L241 hiAutomatonCegarLoop]: Abstraction has 8 states and 13 transitions. [2023-10-12 17:14:22,349 INFO L430 stractBuchiCegarLoop]: Abstraction has 8 states and 13 transitions. [2023-10-12 17:14:22,349 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:14:22,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 13 transitions. [2023-10-12 17:14:22,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:22,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:22,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:22,350 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-10-12 17:14:22,350 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:22,351 INFO L748 eck$LassoCheckResult]: Stem: 293#[$Ultimate##0]don't care [80] $Ultimate##0-->L46: Formula: (and (= v_i2_24 0) (<= 0 v_N2_15) (= v_i1_18 0) (<= 0 v_N1_15) (= v_counter_36 0)) InVars {counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} OutVars{counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} AuxVars[] AssignedVars[] 295#[L46]don't care [64] L46-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 285#[L46-1, L19-1]don't care [67] L46-1-->L30-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 287#[L47, L30-1, L19-1]don't care [71] L19-1-->L19-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (< v_i1_13 v_N1_7) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_7} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_7} AuxVars[] AssignedVars[counter, i1] 299#[L47, L30-1, L19-1]don't care [75] L30-1-->L30-1: Formula: (and (= (+ v_i2_17 1) v_i2_16) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_17 v_N2_9)) InVars {counter=v_counter_25, i2=v_i2_17, N2=v_N2_9} OutVars{counter=v_counter_24, i2=v_i2_16, N2=v_N2_9} AuxVars[] AssignedVars[counter, i2] 297#[L47, L30-1, L19-1]don't care [2023-10-12 17:14:22,351 INFO L750 eck$LassoCheckResult]: Loop: 297#[L47, L30-1, L19-1]don't care [75] L30-1-->L30-1: Formula: (and (= (+ v_i2_17 1) v_i2_16) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_17 v_N2_9)) InVars {counter=v_counter_25, i2=v_i2_17, N2=v_N2_9} OutVars{counter=v_counter_24, i2=v_i2_16, N2=v_N2_9} AuxVars[] AssignedVars[counter, i2] 297#[L47, L30-1, L19-1]don't care [2023-10-12 17:14:22,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,351 INFO L85 PathProgramCache]: Analyzing trace with hash 104484118, now seen corresponding path program 1 times [2023-10-12 17:14:22,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494492857] [2023-10-12 17:14:22,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash 106, now seen corresponding path program 3 times [2023-10-12 17:14:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829445913] [2023-10-12 17:14:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1055959563, now seen corresponding path program 2 times [2023-10-12 17:14:22,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042177585] [2023-10-12 17:14:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,411 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 17:14:22,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:14:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042177585] [2023-10-12 17:14:22,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042177585] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:14:22,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:14:22,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:14:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050245390] [2023-10-12 17:14:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:14:22,431 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,431 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,431 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,431 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,432 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:22,432 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,432 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,432 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,432 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:14:22,432 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,432 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,433 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 17:14:22,437 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 17:14:22,461 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,461 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:22,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,462 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:14:22,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:22,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-10-12 17:14:22,503 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 17:14:22,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,504 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 17:14:22,507 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 17:14:22,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:22,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:22,573 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:22,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:22,581 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,581 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,581 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,581 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,581 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:22,581 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,581 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,581 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:14:22,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,581 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,582 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 17:14:22,588 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 17:14:22,625 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:22,626 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:22,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,628 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 17:14:22,637 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 17:14:22,637 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 17:14:22,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:22,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:22,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:22,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:22,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:22,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:22,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:22,660 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:22,662 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-10-12 17:14:22,662 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:14:22,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:22,801 INFO L229 MonitoredProcess]: Starting monitored process 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 17:14:22,803 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 17:14:22,804 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:22,804 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:22,804 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:22,804 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter) = 1*counter Supporting invariants [] [2023-10-12 17:14:22,817 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 17:14:22,818 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:22,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,850 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,851 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 17:14:22,851 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 17:14:22,851 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 17:14:22,862 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 17:14:22,862 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 17:14:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 6 transitions. [2023-10-12 17:14:22,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:22,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2023-10-12 17:14:22,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:14:22,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,864 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 22 transitions. [2023-10-12 17:14:22,864 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:22,865 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 11 states and 19 transitions. [2023-10-12 17:14:22,865 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-10-12 17:14:22,865 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-10-12 17:14:22,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 19 transitions. [2023-10-12 17:14:22,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:22,865 INFO L219 hiAutomatonCegarLoop]: Abstraction has 11 states and 19 transitions. [2023-10-12 17:14:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 19 transitions. [2023-10-12 17:14:22,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2023-10-12 17:14:22,866 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 17:14:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2023-10-12 17:14:22,866 INFO L241 hiAutomatonCegarLoop]: Abstraction has 9 states and 15 transitions. [2023-10-12 17:14:22,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:14:22,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:14:22,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:14:22,867 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 17:14:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:14:22,890 INFO L93 Difference]: Finished difference Result 14 states and 23 transitions. [2023-10-12 17:14:22,890 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 23 transitions. [2023-10-12 17:14:22,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:22,891 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 22 transitions. [2023-10-12 17:14:22,891 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-10-12 17:14:22,892 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-10-12 17:14:22,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 22 transitions. [2023-10-12 17:14:22,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:22,892 INFO L219 hiAutomatonCegarLoop]: Abstraction has 13 states and 22 transitions. [2023-10-12 17:14:22,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 22 transitions. [2023-10-12 17:14:22,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-10-12 17:14:22,893 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 17:14:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 22 transitions. [2023-10-12 17:14:22,894 INFO L241 hiAutomatonCegarLoop]: Abstraction has 13 states and 22 transitions. [2023-10-12 17:14:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-10-12 17:14:22,895 INFO L430 stractBuchiCegarLoop]: Abstraction has 13 states and 22 transitions. [2023-10-12 17:14:22,895 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:14:22,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 22 transitions. [2023-10-12 17:14:22,895 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-10-12 17:14:22,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:22,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:22,896 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2023-10-12 17:14:22,896 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:22,896 INFO L748 eck$LassoCheckResult]: Stem: 396#[$Ultimate##0]don't care [80] $Ultimate##0-->L46: Formula: (and (= v_i2_24 0) (<= 0 v_N2_15) (= v_i1_18 0) (<= 0 v_N1_15) (= v_counter_36 0)) InVars {counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} OutVars{counter=v_counter_36, i1=v_i1_18, i2=v_i2_24, N2=v_N2_15, N1=v_N1_15} AuxVars[] AssignedVars[] 392#[L46]don't care [64] L46-->L19-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 382#[L46-1, L19-1]don't care [67] L46-1-->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] 384#[L47, L30-1, L19-1]don't care [71] L19-1-->L19-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (< v_i1_13 v_N1_7) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_7} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_7} AuxVars[] AssignedVars[counter, i1] 388#[L47, L30-1, L19-1]don't care [71] L19-1-->L19-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (< v_i1_13 v_N1_7) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_7} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_7} AuxVars[] AssignedVars[counter, i1] 406#[L47, L30-1, L19-1]don't care [75] L30-1-->L30-1: Formula: (and (= (+ v_i2_17 1) v_i2_16) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_17 v_N2_9)) InVars {counter=v_counter_25, i2=v_i2_17, N2=v_N2_9} OutVars{counter=v_counter_24, i2=v_i2_16, N2=v_N2_9} AuxVars[] AssignedVars[counter, i2] 400#[L47, L30-1, L19-1]don't care [71] L19-1-->L19-1: Formula: (and (= v_i1_12 (+ v_i1_13 1)) (< v_i1_13 v_N1_7) (= v_counter_20 (+ v_counter_21 1))) InVars {counter=v_counter_21, i1=v_i1_13, N1=v_N1_7} OutVars{counter=v_counter_20, i1=v_i1_12, N1=v_N1_7} AuxVars[] AssignedVars[counter, i1] 398#[L47, L30-1, L19-1]don't care [75] L30-1-->L30-1: Formula: (and (= (+ v_i2_17 1) v_i2_16) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_17 v_N2_9)) InVars {counter=v_counter_25, i2=v_i2_17, N2=v_N2_9} OutVars{counter=v_counter_24, i2=v_i2_16, N2=v_N2_9} AuxVars[] AssignedVars[counter, i2] 394#[L47, L30-1, L19-1]don't care [2023-10-12 17:14:22,897 INFO L750 eck$LassoCheckResult]: Loop: 394#[L47, L30-1, L19-1]don't care [75] L30-1-->L30-1: Formula: (and (= (+ v_i2_17 1) v_i2_16) (< 0 v_counter_25) (= v_counter_25 (+ v_counter_24 1)) (< v_i2_17 v_N2_9)) InVars {counter=v_counter_25, i2=v_i2_17, N2=v_N2_9} OutVars{counter=v_counter_24, i2=v_i2_16, N2=v_N2_9} AuxVars[] AssignedVars[counter, i2] 394#[L47, L30-1, L19-1]don't care [2023-10-12 17:14:22,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1164975075, now seen corresponding path program 3 times [2023-10-12 17:14:22,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656835708] [2023-10-12 17:14:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,918 INFO L85 PathProgramCache]: Analyzing trace with hash 106, now seen corresponding path program 4 times [2023-10-12 17:14:22,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252563813] [2023-10-12 17:14:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1754488882, now seen corresponding path program 4 times [2023-10-12 17:14:22,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:22,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877508644] [2023-10-12 17:14:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:22,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:22,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:22,966 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:22,966 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:22,966 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:22,966 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:22,966 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:22,966 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:22,966 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:22,966 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:22,967 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:14:22,967 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:22,967 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:22,967 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:22,972 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 17:14:23,004 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:23,004 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:23,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,006 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 17:14:23,014 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 17:14:23,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:23,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [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 (21)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:23,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,055 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 17:14:23,058 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 17:14:23,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:23,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:23,165 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:23,171 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 17:14:23,171 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:23,171 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:23,171 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:23,171 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:23,171 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:23,171 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,171 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:23,171 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:23,171 INFO L133 ssoRankerPreferences]: Filename of dumped script: figure1-alt.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:14:23,171 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:23,171 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:23,172 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 17:14:23,178 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 17:14:23,215 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:23,216 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:23,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,217 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 17:14:23,221 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 17:14:23,221 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 17:14:23,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:23,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:23,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:23,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:23,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:23,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:23,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:23,232 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:23,234 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:23,234 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:14:23,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:23,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:23,236 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 17:14:23,240 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 17:14:23,242 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:23,242 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:23,242 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:23,242 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N2, i2) = 1*N2 - 1*i2 Supporting invariants [] [2023-10-12 17:14:23,248 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 17:14:23,249 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:23,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:23,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:23,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:23,294 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:23,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:23,295 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 17:14:23,295 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 17:14:23,295 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 17:14:23,314 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 16 states and 27 transitions. Complement of second has 4 states. [2023-10-12 17:14:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:14:23,316 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 17:14:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-10-12 17:14:23,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2023-10-12 17:14:23,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:23,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2023-10-12 17:14:23,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:23,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2023-10-12 17:14:23,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:23,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 27 transitions. [2023-10-12 17:14:23,320 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:23,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2023-10-12 17:14:23,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:14:23,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:14:23,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:14:23,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:14:23,321 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:23,321 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:23,321 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:23,321 INFO L337 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-10-12 17:14:23,321 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:14:23,321 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:23,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:14:23,329 INFO L201 PluginConnector]: Adding new model figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:14:23 BoogieIcfgContainer [2023-10-12 17:14:23,329 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:14:23,330 INFO L158 Benchmark]: Toolchain (without parser) took 3266.79ms. Allocated memory was 202.4MB in the beginning and 283.1MB in the end (delta: 80.7MB). Free memory was 149.6MB in the beginning and 166.1MB in the end (delta: -16.5MB). Peak memory consumption was 65.9MB. Max. memory is 8.0GB. [2023-10-12 17:14:23,330 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 202.4MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:14:23,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.10ms. Allocated memory is still 202.4MB. Free memory was 149.6MB in the beginning and 148.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:14:23,332 INFO L158 Benchmark]: Boogie Preprocessor took 14.40ms. Allocated memory is still 202.4MB. Free memory was 148.1MB in the beginning and 147.1MB in the end (delta: 968.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:14:23,332 INFO L158 Benchmark]: RCFGBuilder took 213.98ms. Allocated memory is still 202.4MB. Free memory was 147.0MB in the beginning and 137.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-10-12 17:14:23,334 INFO L158 Benchmark]: BuchiAutomizer took 3011.57ms. Allocated memory was 202.4MB in the beginning and 283.1MB in the end (delta: 80.7MB). Free memory was 137.2MB in the beginning and 166.1MB in the end (delta: -28.9MB). Peak memory consumption was 53.3MB. Max. memory is 8.0GB. [2023-10-12 17:14:23,338 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 0.19ms. Allocated memory is still 202.4MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.10ms. Allocated memory is still 202.4MB. Free memory was 149.6MB in the beginning and 148.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.40ms. Allocated memory is still 202.4MB. Free memory was 148.1MB in the beginning and 147.1MB in the end (delta: 968.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 213.98ms. Allocated memory is still 202.4MB. Free memory was 147.0MB in the beginning and 137.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 3011.57ms. Allocated memory was 202.4MB in the beginning and 283.1MB in the end (delta: 80.7MB). Free memory was 137.2MB in the beginning and 166.1MB in the end (delta: -28.9MB). Peak memory consumption was 53.3MB. 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, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function N1 + -1 * i1 and consists of 4 locations. One deterministic module has affine ranking function counter and consists of 3 locations. One deterministic module has affine ranking function counter and consists of 3 locations. One deterministic module has affine ranking function counter and consists of 2 locations. One deterministic module has affine ranking function -1 * i2 + N2 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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 [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 78 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: 35ms 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: 0.3s, 26 PlacesBefore, 16 PlacesAfterwards, 21 TransitionsBefore, 11 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 3 FixpointIterations, 7 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 43 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 43, independent: 43, independent conditional: 0, independent unconditional: 43, 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: 43, independent: 15, independent conditional: 0, independent unconditional: 15, 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 17:14:23,352 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 17:14:23,553 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 17:14:23,754 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 17:14:23,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-10-12 17:14:24,157 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...