/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/counter-determinism.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:14:18,608 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:14:18,657 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 17:14:18,670 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:14:18,671 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:14:18,671 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:14:18,672 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:14:18,672 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:14:18,672 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:14:18,673 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:14:18,673 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:14:18,673 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:14:18,674 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:14:18,674 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:14:18,674 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:14:18,674 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:14:18,675 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:14:18,675 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:14:18,675 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:14:18,675 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:14:18,675 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:14:18,676 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:14:18,676 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:14:18,676 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:14:18,677 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:14:18,677 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:14:18,677 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:14:18,677 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:14:18,677 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:14:18,678 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:14:18,678 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:14:18,678 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:14:18,678 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:14:18,679 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:14:18,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:14:18,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:14:18,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:14:18,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:14:18,825 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:14:18,826 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:14:18,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-determinism.wvr.bpl [2023-10-12 17:14:18,827 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-determinism.wvr.bpl' [2023-10-12 17:14:18,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:14:18,844 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:14:18,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:18,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:14:18,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:14:18,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,861 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:14:18,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:14:18,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:14:18,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:14:18,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:14:18,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:14:18,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:14:18,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:14:18,875 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:14:18,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/1) ... [2023-10-12 17:14:18,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:18,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:18,895 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 17:14:18,915 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 17:14:18,934 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:14:18,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:14:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:14:18,935 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:14:18,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:14:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:14:18,935 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:14:18,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:14:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:14:18,935 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-10-12 17:14:18,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-10-12 17:14:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-10-12 17:14:18,936 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2023-10-12 17:14:18,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-10-12 17:14:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-10-12 17:14:18,936 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 17:14:18,970 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:14:18,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:14:19,050 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:14:19,066 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:14:19,066 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:14:19,068 INFO L201 PluginConnector]: Adding new model counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:19 BoogieIcfgContainer [2023-10-12 17:14:19,068 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:14:19,068 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:14:19,069 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:14:19,071 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:14:19,071 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:19,072 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:14:18" (1/2) ... [2023-10-12 17:14:19,073 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@151f0d20 and model type counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:14:19, skipping insertion in model container [2023-10-12 17:14:19,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:14:19,073 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:14:19" (2/2) ... [2023-10-12 17:14:19,073 INFO L332 chiAutomizerObserver]: Analyzing ICFG counter-determinism.wvr.bpl [2023-10-12 17:14:19,113 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-10-12 17:14:19,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 118 flow [2023-10-12 17:14:19,149 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-10-12 17:14:19,150 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:14:19,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 35 events. 4/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-10-12 17:14:19,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 43 transitions, 118 flow [2023-10-12 17:14:19,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2023-10-12 17:14:19,158 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:14:19,167 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 35 transitions, 94 flow [2023-10-12 17:14:19,168 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 35 transitions, 94 flow [2023-10-12 17:14:19,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 94 flow [2023-10-12 17:14:19,175 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-10-12 17:14:19,175 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-10-12 17:14:19,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 35 events. 4/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-10-12 17:14:19,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 288 [2023-10-12 17:14:19,411 INFO L134 LiptonReduction]: Checked pairs total: 258 [2023-10-12 17:14:19,411 INFO L136 LiptonReduction]: Total number of compositions: 17 [2023-10-12 17:14:19,424 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:14:19,424 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:14:19,424 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:14:19,424 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:14:19,424 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:14:19,425 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:14:19,425 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:14:19,425 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:14:19,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:14:19,453 INFO L131 ngComponentsAnalysis]: Automaton has 37 accepting balls. 37 [2023-10-12 17:14:19,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:19,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:19,457 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:19,457 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:19,457 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:14:19,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 48 states, but on-demand construction may add more states [2023-10-12 17:14:19,460 INFO L131 ngComponentsAnalysis]: Automaton has 37 accepting balls. 37 [2023-10-12 17:14:19,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:19,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:19,461 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:14:19,461 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:19,464 INFO L748 eck$LassoCheckResult]: Stem: 51#[$Ultimate##0]don't care [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 54#[L74]don't care [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 56#[L74-1, L22-1]don't care [2023-10-12 17:14:19,464 INFO L750 eck$LassoCheckResult]: Loop: 56#[L74-1, L22-1]don't care [137] L22-1-->L22-1: Formula: (and (< v_i1_13 v_N1_12) (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_31 1) v_counter1_30)) InVars {counter1=v_counter1_31, i1=v_i1_13, N1=v_N1_12} OutVars{counter1=v_counter1_30, i1=v_i1_12, N1=v_N1_12} AuxVars[] AssignedVars[counter1, i1] 56#[L74-1, L22-1]don't care [2023-10-12 17:14:19,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash 5475, now seen corresponding path program 1 times [2023-10-12 17:14:19,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:19,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660495550] [2023-10-12 17:14:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:19,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:19,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:19,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:19,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:19,581 INFO L85 PathProgramCache]: Analyzing trace with hash 168, now seen corresponding path program 1 times [2023-10-12 17:14:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:19,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048906746] [2023-10-12 17:14:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:19,591 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:19,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:19,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash 169862, now seen corresponding path program 1 times [2023-10-12 17:14:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:19,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397043437] [2023-10-12 17:14:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:19,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:19,603 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:19,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:19,644 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:19,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:19,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:19,645 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:19,645 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:19,645 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:19,645 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:19,645 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:19,645 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:19,645 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:19,646 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:19,655 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 17:14:19,665 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 17:14:19,689 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:19,689 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:19,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:19,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:19,693 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 17:14:19,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:19,720 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:19,730 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 17:14:19,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-10-12 17:14:19,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:19,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:19,745 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 17:14:19,747 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 17:14:19,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:19,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:19,862 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:19,866 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 17:14:19,867 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:19,867 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:19,867 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:19,867 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:19,867 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:19,867 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:19,867 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:19,867 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:19,867 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:14:19,867 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:19,867 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:19,868 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 17:14:19,874 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 17:14:19,894 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:19,897 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:19,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:19,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:19,899 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 17:14:19,901 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 17:14:19,903 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 17:14:19,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:19,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:19,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:19,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:19,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:19,912 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:19,912 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:19,927 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:19,932 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:14:19,932 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:19,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:19,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:19,951 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 17:14:19,952 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 17:14:19,953 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:19,953 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:19,954 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:19,954 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, N1) = -1*i1 + 1*N1 Supporting invariants [] [2023-10-12 17:14:19,974 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 17:14:19,977 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:19,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:20,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:20,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:20,014 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:20,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:20,015 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 17:14:20,034 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 17:14:20,035 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 48 states, but on-demand construction may add more states Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:20,085 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 48 states, but on-demand construction may add more states. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 137 states and 541 transitions. Complement of second has 5 states. [2023-10-12 17:14:20,087 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 17:14:20,090 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 17:14:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2023-10-12 17:14:20,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 1 letters. [2023-10-12 17:14:20,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:20,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:14:20,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:20,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:14:20,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:20,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 137 states and 541 transitions. [2023-10-12 17:14:20,099 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 33 [2023-10-12 17:14:20,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 137 states to 94 states and 381 transitions. [2023-10-12 17:14:20,104 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2023-10-12 17:14:20,105 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 67 [2023-10-12 17:14:20,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 381 transitions. [2023-10-12 17:14:20,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:20,105 INFO L219 hiAutomatonCegarLoop]: Abstraction has 94 states and 381 transitions. [2023-10-12 17:14:20,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 381 transitions. [2023-10-12 17:14:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 68. [2023-10-12 17:14:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 4.220588235294118) internal successors, (287), 67 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 287 transitions. [2023-10-12 17:14:20,135 INFO L241 hiAutomatonCegarLoop]: Abstraction has 68 states and 287 transitions. [2023-10-12 17:14:20,136 INFO L430 stractBuchiCegarLoop]: Abstraction has 68 states and 287 transitions. [2023-10-12 17:14:20,136 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:14:20,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 287 transitions. [2023-10-12 17:14:20,137 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 33 [2023-10-12 17:14:20,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:20,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:20,138 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:14:20,138 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:20,138 INFO L748 eck$LassoCheckResult]: Stem: 447#[$Ultimate##0]don't care [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 351#[L74]don't care [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 353#[L74-1, L22-1]don't care [115] L74-1-->L33-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 373#[L33-1, L75, L22-1]don't care [2023-10-12 17:14:20,138 INFO L750 eck$LassoCheckResult]: Loop: 373#[L33-1, L75, L22-1]don't care [131] L33-1-->L33-1: Formula: (and (< v_i2_17 v_N2_12) (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_12} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_12} AuxVars[] AssignedVars[counter1, i2] 373#[L33-1, L75, L22-1]don't care [2023-10-12 17:14:20,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash 169840, now seen corresponding path program 1 times [2023-10-12 17:14:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203925243] [2023-10-12 17:14:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,143 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,146 INFO L85 PathProgramCache]: Analyzing trace with hash 162, now seen corresponding path program 1 times [2023-10-12 17:14:20,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391690756] [2023-10-12 17:14:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash 5265171, now seen corresponding path program 1 times [2023-10-12 17:14:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958449086] [2023-10-12 17:14:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:20,185 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 17:14:20,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:14:20,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958449086] [2023-10-12 17:14:20,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958449086] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:14:20,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:14:20,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:14:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702992550] [2023-10-12 17:14:20,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:14:20,205 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:20,206 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:20,206 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:20,206 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:20,206 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:20,206 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,206 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:20,206 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:20,206 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:20,206 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:20,206 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:20,207 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:20,211 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 17:14:20,232 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:20,232 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:20,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,233 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 17:14:20,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:20,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:20,253 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 17:14:20,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-10-12 17:14:20,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,274 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 17:14:20,276 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 17:14:20,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:20,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:20,299 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:20,317 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 17:14:20,318 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:20,318 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:20,318 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:20,318 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:20,318 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:20,318 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,318 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:20,318 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:20,318 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:14:20,318 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:20,318 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:20,319 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:20,325 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:20,359 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:20,359 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:20,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,360 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 17:14:20,384 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 17:14:20,408 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 17:14:20,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:20,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:20,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:20,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:20,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:20,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:20,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:20,427 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:20,429 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:20,430 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:20,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,471 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 17:14:20,472 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 17:14:20,476 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:20,477 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:20,477 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:20,477 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(counter1) = 1*counter1 Supporting invariants [] [2023-10-12 17:14:20,497 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 17:14:20,498 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:20,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:20,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:20,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:20,528 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:20,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:20,529 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 17:14:20,529 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 17:14:20,529 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 287 transitions. cyclomatic complexity: 266 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:20,590 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 287 transitions. cyclomatic complexity: 266. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 221 states and 883 transitions. Complement of second has 5 states. [2023-10-12 17:14:20,590 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 17:14:20,594 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 17:14:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2023-10-12 17:14:20,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:14:20,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:20,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:14:20,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:20,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:14:20,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:20,595 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 221 states and 883 transitions. [2023-10-12 17:14:20,599 INFO L131 ngComponentsAnalysis]: Automaton has 59 accepting balls. 59 [2023-10-12 17:14:20,602 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 221 states to 184 states and 736 transitions. [2023-10-12 17:14:20,602 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2023-10-12 17:14:20,603 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 103 [2023-10-12 17:14:20,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 184 states and 736 transitions. [2023-10-12 17:14:20,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:20,603 INFO L219 hiAutomatonCegarLoop]: Abstraction has 184 states and 736 transitions. [2023-10-12 17:14:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states and 736 transitions. [2023-10-12 17:14:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 131. [2023-10-12 17:14:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 131 states have (on average 4.458015267175573) internal successors, (584), 130 states have internal predecessors, (584), 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 17:14:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 584 transitions. [2023-10-12 17:14:20,621 INFO L241 hiAutomatonCegarLoop]: Abstraction has 131 states and 584 transitions. [2023-10-12 17:14:20,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:14:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:14:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:14:20,624 INFO L87 Difference]: Start difference. First operand 131 states and 584 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 17:14:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:14:20,663 INFO L93 Difference]: Finished difference Result 200 states and 781 transitions. [2023-10-12 17:14:20,663 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 781 transitions. [2023-10-12 17:14:20,670 INFO L131 ngComponentsAnalysis]: Automaton has 70 accepting balls. 70 [2023-10-12 17:14:20,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 180 states and 730 transitions. [2023-10-12 17:14:20,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 93 [2023-10-12 17:14:20,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 93 [2023-10-12 17:14:20,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 730 transitions. [2023-10-12 17:14:20,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:20,677 INFO L219 hiAutomatonCegarLoop]: Abstraction has 180 states and 730 transitions. [2023-10-12 17:14:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 730 transitions. [2023-10-12 17:14:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 134. [2023-10-12 17:14:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 4.41044776119403) internal successors, (591), 133 states have internal predecessors, (591), 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 17:14:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 591 transitions. [2023-10-12 17:14:20,695 INFO L241 hiAutomatonCegarLoop]: Abstraction has 134 states and 591 transitions. [2023-10-12 17:14:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:14:20,713 INFO L430 stractBuchiCegarLoop]: Abstraction has 134 states and 591 transitions. [2023-10-12 17:14:20,714 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:14:20,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 591 transitions. [2023-10-12 17:14:20,715 INFO L131 ngComponentsAnalysis]: Automaton has 44 accepting balls. 44 [2023-10-12 17:14:20,715 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:20,715 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:20,715 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-10-12 17:14:20,715 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:20,716 INFO L748 eck$LassoCheckResult]: Stem: 1344#[$Ultimate##0]don't care [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 1216#[L74]don't care [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 1218#[L74-1, L22-1]don't care [115] L74-1-->L33-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 1236#[L33-1, L75, L22-1]don't care [118] L75-->L45-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 1240#[L45-1, L33-1, L22-1, L76]don't care [2023-10-12 17:14:20,716 INFO L750 eck$LassoCheckResult]: Loop: 1240#[L45-1, L33-1, L22-1, L76]don't care [133] L45-1-->L45-1: Formula: (and (= (+ v_counter2_27 1) v_counter2_26) (= v_j1_14 (+ v_j1_15 1)) (< v_j1_15 v_N1_8)) InVars {counter2=v_counter2_27, j1=v_j1_15, N1=v_N1_8} OutVars{counter2=v_counter2_26, j1=v_j1_14, N1=v_N1_8} AuxVars[] AssignedVars[counter2, j1] 1240#[L45-1, L33-1, L22-1, L76]don't care [2023-10-12 17:14:20,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash 5265158, now seen corresponding path program 1 times [2023-10-12 17:14:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250721594] [2023-10-12 17:14:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,720 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash 164, now seen corresponding path program 1 times [2023-10-12 17:14:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638423649] [2023-10-12 17:14:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:20,733 INFO L85 PathProgramCache]: Analyzing trace with hash 163220031, now seen corresponding path program 1 times [2023-10-12 17:14:20,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:20,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103688235] [2023-10-12 17:14:20,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:20,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:20,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:20,775 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:20,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:20,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:20,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:20,775 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:20,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:20,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:20,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:20,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:20,776 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:20,777 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:20,783 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:14:20,807 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:20,807 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:20,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,808 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 17:14:20,810 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 17:14:20,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:20,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:20,836 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 17:14:20,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,837 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 17:14:20,839 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 17:14:20,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:20,840 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:20,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:14:20,874 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {counter2=0} Honda state: {counter2=0} Generalized eigenvectors: [{counter2=1}, {counter2=-6}, {counter2=6}] Lambdas: [7, 2, 1] Nus: [1, 1] [2023-10-12 17:14:20,880 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 17:14:20,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,881 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 17:14:20,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:20,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:20,918 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 17:14:20,927 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 17:14:20,935 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 17:14:20,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-10-12 17:14:20,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:20,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:20,937 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 17:14:20,937 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 17:14:20,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:20,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,027 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:21,031 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 17:14:21,031 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,031 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:21,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,031 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,031 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:14:21,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,032 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,032 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 17:14:21,035 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 17:14:21,061 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,061 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:21,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,081 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 17:14:21,083 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 17:14:21,084 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 17:14:21,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,093 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:14:21,096 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 17:14:21,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,097 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 17:14:21,099 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 17:14:21,101 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 17:14:21,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,107 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,108 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,133 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:21,136 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:21,136 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:21,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,149 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 17:14:21,152 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 17:14:21,153 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:21,153 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:21,153 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:21,153 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j1, N1) = -1*j1 + 1*N1 Supporting invariants [] [2023-10-12 17:14:21,171 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 17:14:21,172 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:21,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,199 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,200 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 17:14:21,200 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 17:14:21,200 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 134 states and 591 transitions. cyclomatic complexity: 540 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:21,230 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 134 states and 591 transitions. cyclomatic complexity: 540. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 380 states and 1744 transitions. Complement of second has 4 states. [2023-10-12 17:14:21,231 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 17:14:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:21,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2023-10-12 17:14:21,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:14:21,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:21,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:14:21,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 380 states and 1744 transitions. [2023-10-12 17:14:21,236 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 33 [2023-10-12 17:14:21,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 380 states to 258 states and 1159 transitions. [2023-10-12 17:14:21,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2023-10-12 17:14:21,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2023-10-12 17:14:21,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 258 states and 1159 transitions. [2023-10-12 17:14:21,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:21,239 INFO L219 hiAutomatonCegarLoop]: Abstraction has 258 states and 1159 transitions. [2023-10-12 17:14:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states and 1159 transitions. [2023-10-12 17:14:21,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 221. [2023-10-12 17:14:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 221 states have (on average 4.728506787330317) internal successors, (1045), 220 states have internal predecessors, (1045), 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 17:14:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 1045 transitions. [2023-10-12 17:14:21,245 INFO L241 hiAutomatonCegarLoop]: Abstraction has 221 states and 1045 transitions. [2023-10-12 17:14:21,245 INFO L430 stractBuchiCegarLoop]: Abstraction has 221 states and 1045 transitions. [2023-10-12 17:14:21,245 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:14:21,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 221 states and 1045 transitions. [2023-10-12 17:14:21,247 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 33 [2023-10-12 17:14:21,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:21,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:21,247 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-10-12 17:14:21,247 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:21,247 INFO L748 eck$LassoCheckResult]: Stem: 2075#[$Ultimate##0]don't care [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 1887#[L74]don't care [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 1889#[L74-1, L22-1]don't care [115] L74-1-->L33-1: 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] 1915#[L33-1, L75, L22-1]don't care [118] L75-->L45-1: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0] 1919#[L45-1, L33-1, L22-1, L76]don't care [121] L76-->L56-1: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2] 2271#[L22-1, L33-1, L77, L56-1, L45-1]don't care [2023-10-12 17:14:21,247 INFO L750 eck$LassoCheckResult]: Loop: 2271#[L22-1, L33-1, L77, L56-1, L45-1]don't care [129] L56-1-->L56-1: Formula: (and (< v_j2_19 v_N2_8) (< 0 v_counter2_23) (= (+ v_counter2_22 1) v_counter2_23) (= v_j2_18 (+ v_j2_19 1))) InVars {counter2=v_counter2_23, j2=v_j2_19, N2=v_N2_8} OutVars{counter2=v_counter2_22, j2=v_j2_18, N2=v_N2_8} AuxVars[] AssignedVars[counter2, j2] 2271#[L22-1, L33-1, L77, L56-1, L45-1]don't care [2023-10-12 17:14:21,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash 163220019, now seen corresponding path program 1 times [2023-10-12 17:14:21,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162163871] [2023-10-12 17:14:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash 160, now seen corresponding path program 1 times [2023-10-12 17:14:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165308390] [2023-10-12 17:14:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash 764853422, now seen corresponding path program 1 times [2023-10-12 17:14:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365272372] [2023-10-12 17:14:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,278 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 17:14:21,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:14:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365272372] [2023-10-12 17:14:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365272372] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:14:21,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:14:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-10-12 17:14:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285628977] [2023-10-12 17:14:21,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:14:21,296 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,296 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:21,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,296 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,296 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:14:21,296 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,296 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,297 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 17:14:21,301 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 17:14:21,320 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:21,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,337 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 17:14:21,353 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 17:14:21,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:21,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,382 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 17:14:21,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,386 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 17:14:21,389 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 17:14:21,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:21,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,494 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:21,497 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 17:14:21,498 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,498 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,498 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,498 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,498 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:21,498 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,498 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,498 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,498 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:14:21,498 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,498 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,499 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 17:14:21,503 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 17:14:21,526 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,526 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:21,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,527 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 17:14:21,538 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 17:14:21,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,546 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,549 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 17:14:21,557 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:21,560 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:14:21,560 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:14:21,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,585 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 17:14:21,593 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:21,594 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:21,594 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:21,594 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j2, N2) = -1*j2 + 1*N2 Supporting invariants [] [2023-10-12 17:14:21,596 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 17:14:21,613 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 17:14:21,614 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:21,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,640 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:21,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:21,640 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 17:14:21,641 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 17:14:21,641 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 221 states and 1045 transitions. cyclomatic complexity: 925 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 17:14:21,671 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 221 states and 1045 transitions. cyclomatic complexity: 925. 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 517 states and 2375 transitions. Complement of second has 4 states. [2023-10-12 17:14:21,672 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 17:14:21,672 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 17:14:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2023-10-12 17:14:21,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:21,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 1 letters. [2023-10-12 17:14:21,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:14:21,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:21,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 517 states and 2375 transitions. [2023-10-12 17:14:21,678 INFO L131 ngComponentsAnalysis]: Automaton has 18 accepting balls. 18 [2023-10-12 17:14:21,680 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 517 states to 186 states and 843 transitions. [2023-10-12 17:14:21,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-10-12 17:14:21,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2023-10-12 17:14:21,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 186 states and 843 transitions. [2023-10-12 17:14:21,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:21,680 INFO L219 hiAutomatonCegarLoop]: Abstraction has 186 states and 843 transitions. [2023-10-12 17:14:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states and 843 transitions. [2023-10-12 17:14:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 165. [2023-10-12 17:14:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 165 states have (on average 4.666666666666667) internal successors, (770), 164 states have internal predecessors, (770), 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 17:14:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 770 transitions. [2023-10-12 17:14:21,684 INFO L241 hiAutomatonCegarLoop]: Abstraction has 165 states and 770 transitions. [2023-10-12 17:14:21,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:14:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-10-12 17:14:21,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-10-12 17:14:21,685 INFO L87 Difference]: Start difference. First operand 165 states and 770 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:14:21,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:14:21,702 INFO L93 Difference]: Finished difference Result 280 states and 1208 transitions. [2023-10-12 17:14:21,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 280 states and 1208 transitions. [2023-10-12 17:14:21,705 INFO L131 ngComponentsAnalysis]: Automaton has 34 accepting balls. 34 [2023-10-12 17:14:21,707 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 280 states to 262 states and 1141 transitions. [2023-10-12 17:14:21,707 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2023-10-12 17:14:21,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2023-10-12 17:14:21,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 262 states and 1141 transitions. [2023-10-12 17:14:21,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:14:21,708 INFO L219 hiAutomatonCegarLoop]: Abstraction has 262 states and 1141 transitions. [2023-10-12 17:14:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states and 1141 transitions. [2023-10-12 17:14:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 207. [2023-10-12 17:14:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 207 states have (on average 4.618357487922705) internal successors, (956), 206 states have internal predecessors, (956), 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 17:14:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 956 transitions. [2023-10-12 17:14:21,712 INFO L241 hiAutomatonCegarLoop]: Abstraction has 207 states and 956 transitions. [2023-10-12 17:14:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-10-12 17:14:21,713 INFO L430 stractBuchiCegarLoop]: Abstraction has 207 states and 956 transitions. [2023-10-12 17:14:21,713 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:14:21,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 207 states and 956 transitions. [2023-10-12 17:14:21,714 INFO L131 ngComponentsAnalysis]: Automaton has 22 accepting balls. 22 [2023-10-12 17:14:21,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:14:21,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:14:21,715 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-10-12 17:14:21,715 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:14:21,715 INFO L748 eck$LassoCheckResult]: Stem: 3571#[$Ultimate##0]don't care [142] $Ultimate##0-->L74: Formula: (and (= v_counter1_36 0) (= v_i1_20 0) (= v_i2_24 0) (= v_counter2_36 0) (= v_j1_20 0) (= v_j2_24 0) (= v_N2_16 v_N1_16)) InVars {counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} OutVars{counter2=v_counter2_36, counter1=v_counter1_36, j2=v_j2_24, i1=v_i1_20, i2=v_i2_24, j1=v_j1_20, N2=v_N2_16, N1=v_N1_16} AuxVars[] AssignedVars[] 3475#[L74]don't care [112] L74-->L22-1: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 3477#[L74-1, L22-1]don't care [115] L74-1-->L33-1: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 3511#[L33-1, L75, L22-1]don't care [137] L22-1-->L22-1: Formula: (and (< v_i1_13 v_N1_12) (= v_i1_12 (+ v_i1_13 1)) (= (+ v_counter1_31 1) v_counter1_30)) InVars {counter1=v_counter1_31, i1=v_i1_13, N1=v_N1_12} OutVars{counter1=v_counter1_30, i1=v_i1_12, N1=v_N1_12} AuxVars[] AssignedVars[counter1, i1] 3509#[L33-1, L75, L22-1]don't care [131] L33-1-->L33-1: Formula: (and (< v_i2_17 v_N2_12) (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_12} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_12} AuxVars[] AssignedVars[counter1, i2] 3499#[L33-1, L75, L22-1]don't care [2023-10-12 17:14:21,715 INFO L750 eck$LassoCheckResult]: Loop: 3499#[L33-1, L75, L22-1]don't care [131] L33-1-->L33-1: Formula: (and (< v_i2_17 v_N2_12) (< 0 v_counter1_23) (= (+ v_i2_17 1) v_i2_16) (= (+ v_counter1_22 1) v_counter1_23)) InVars {counter1=v_counter1_23, i2=v_i2_17, N2=v_N2_12} OutVars{counter1=v_counter1_22, i2=v_i2_16, N2=v_N2_12} AuxVars[] AssignedVars[counter1, i2] 3499#[L33-1, L75, L22-1]don't care [2023-10-12 17:14:21,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash 163220618, now seen corresponding path program 1 times [2023-10-12 17:14:21,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851540627] [2023-10-12 17:14:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,720 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash 162, now seen corresponding path program 2 times [2023-10-12 17:14:21,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949648508] [2023-10-12 17:14:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:14:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:14:21,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:14:21,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash 764871993, now seen corresponding path program 2 times [2023-10-12 17:14:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:14:21,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543601810] [2023-10-12 17:14:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:14:21,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:14:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:21,752 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 17:14:21,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:14:21,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543601810] [2023-10-12 17:14:21,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543601810] provided 1 perfect and 0 imperfect interpolant sequences [2023-10-12 17:14:21,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-10-12 17:14:21,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-10-12 17:14:21,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400500406] [2023-10-12 17:14:21,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-10-12 17:14:21,768 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,768 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,768 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,769 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,769 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:14:21,769 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,769 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,769 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,769 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:14:21,769 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,769 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,769 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 17:14:21,773 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 17:14:21,791 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,791 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:14:21,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,792 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 17:14:21,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:14:21,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,824 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 17:14:21,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-10-12 17:14:21,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,837 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 17:14:21,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:14:21,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:14:21,868 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 17:14:21,937 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:14:21,940 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 17:14:21,941 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:14:21,941 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:14:21,941 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:14:21,941 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:14:21,941 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:14:21,941 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,941 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:14:21,941 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:14:21,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: counter-determinism.wvr.bpl_BEv2_Iteration5_Loop [2023-10-12 17:14:21,941 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:14:21,941 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:14:21,942 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 17:14:21,946 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 17:14:21,969 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:14:21,969 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:14:21,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,970 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 17:14:21,978 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 17:14:21,980 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 17:14:21,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:14:21,986 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:14:21,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:14:21,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:14:21,986 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:14:21,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:14:21,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:14:21,989 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:14:21,992 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:14:21,992 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:14:21,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:14:21,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:14:21,995 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 17:14:21,998 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 17:14:21,998 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:14:21,998 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:14:21,999 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:14:21,999 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(N2, i2) = 1*N2 - 1*i2 Supporting invariants [] [2023-10-12 17:14:22,001 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 17:14:22,002 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:14:22,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:14:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:14:22,028 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:14:22,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:14:22,028 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 17:14:22,029 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 17:14:22,029 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 207 states and 956 transitions. cyclomatic complexity: 839 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 17:14:22,062 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 207 states and 956 transitions. cyclomatic complexity: 839. 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 782 states and 3521 transitions. Complement of second has 4 states. [2023-10-12 17:14:22,063 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 17:14:22,063 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 17:14:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2023-10-12 17:14:22,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:14:22,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 1 letters. [2023-10-12 17:14:22,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:14:22,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:14:22,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 782 states and 3521 transitions. [2023-10-12 17:14:22,071 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:22,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 782 states to 0 states and 0 transitions. [2023-10-12 17:14:22,071 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:14:22,071 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:14:22,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:14:22,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:14:22,071 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,071 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:14:22,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-10-12 17:14:22,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-10-12 17:14:22,084 INFO L87 Difference]: Start difference. First operand 0 states and 0 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 17:14:22,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:14:22,084 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-10-12 17:14:22,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-10-12 17:14:22,084 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:22,084 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-10-12 17:14:22,085 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:14:22,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:14:22,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:14:22,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:14:22,085 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,085 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-10-12 17:14:22,087 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:14:22,087 INFO L337 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-10-12 17:14:22,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:14:22,087 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:14:22,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:14:22,091 INFO L201 PluginConnector]: Adding new model counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:14:22 BoogieIcfgContainer [2023-10-12 17:14:22,092 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:14:22,092 INFO L158 Benchmark]: Toolchain (without parser) took 3248.54ms. Allocated memory was 173.0MB in the beginning and 210.8MB in the end (delta: 37.7MB). Free memory was 130.7MB in the beginning and 180.9MB in the end (delta: -50.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:14:22,092 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.24ms. Allocated memory is still 173.0MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:14:22,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.27ms. Allocated memory is still 173.0MB. Free memory was 130.7MB in the beginning and 129.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:14:22,094 INFO L158 Benchmark]: Boogie Preprocessor took 11.87ms. Allocated memory is still 173.0MB. Free memory was 129.1MB in the beginning and 128.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:14:22,094 INFO L158 Benchmark]: RCFGBuilder took 193.11ms. Allocated memory is still 173.0MB. Free memory was 128.0MB in the beginning and 116.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-10-12 17:14:22,095 INFO L158 Benchmark]: BuchiAutomizer took 3023.08ms. Allocated memory was 173.0MB in the beginning and 210.8MB in the end (delta: 37.7MB). Free memory was 116.8MB in the beginning and 180.9MB in the end (delta: -64.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:14:22,096 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-10-12 17:14:22,101 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 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24ms. Allocated memory is still 173.0MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.27ms. Allocated memory is still 173.0MB. Free memory was 130.7MB in the beginning and 129.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.87ms. Allocated memory is still 173.0MB. Free memory was 129.1MB in the beginning and 128.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 193.11ms. Allocated memory is still 173.0MB. Free memory was 128.0MB in the beginning and 116.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 3023.08ms. Allocated memory was 173.0MB in the beginning and 210.8MB in the end (delta: 37.7MB). Free memory was 116.8MB in the beginning and 180.9MB in the end (delta: -64.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 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 counter1 and consists of 3 locations. One deterministic module has affine ranking function -1 * j1 + N1 and consists of 3 locations. One deterministic module has affine ranking function -1 * j2 + N2 and consists of 3 locations. One deterministic module has affine ranking function -1 * i2 + N2 and consists of 3 locations. 3 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:1. Analysis of lassos took 1.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 238 StatesRemovedByMinimization, 6 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, 112 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 211 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 56ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 44 PlacesBefore, 28 PlacesAfterwards, 35 TransitionsBefore, 19 TransitionsAfterwards, 288 CoEnabledTransitionPairs, 3 FixpointIterations, 9 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 17 TotalNumberOfCompositions, 258 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 258, independent: 258, independent conditional: 0, independent unconditional: 258, 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: 168, independent: 168, independent conditional: 0, independent unconditional: 168, 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: 168, independent: 168, independent conditional: 0, independent unconditional: 168, 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: 258, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 168, unknown conditional: 0, unknown unconditional: 168] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:14:22,111 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 17:14:22,115 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 17:14:22,317 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...