/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/3_thr/bb6.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:41,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:41,991 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:42,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:42,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:42,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:42,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:42,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:42,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:42,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:42,019 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:42,019 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:42,019 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:42,019 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:42,019 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:42,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:42,020 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:42,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:42,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:42,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:42,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:42,021 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:42,021 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:42,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:42,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:42,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:42,276 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:42,276 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:42,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/bb6.c.bpl [2025-02-17 22:45:42,277 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/bb6.c.bpl' [2025-02-17 22:45:42,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:42,290 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:42,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:42,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:42,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:42,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,307 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:42,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:42,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:42,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:42,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:42,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,315 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:42,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:42,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:42,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:42,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/1) ... [2025-02-17 22:45:42,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:42,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:42,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:42,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:45:42,371 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:42,371 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:42,372 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:42,372 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:45:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:45:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:45:42,372 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:42,373 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:45:42,407 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:42,408 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:42,477 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:42,477 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:42,488 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:42,489 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:42,489 INFO L201 PluginConnector]: Adding new model bb6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:42 BoogieIcfgContainer [2025-02-17 22:45:42,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:42,491 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:42,491 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:42,496 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:42,497 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:42,497 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:42" (1/2) ... [2025-02-17 22:45:42,498 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50954d60 and model type bb6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:42, skipping insertion in model container [2025-02-17 22:45:42,499 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:42,499 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:42" (2/2) ... [2025-02-17 22:45:42,499 INFO L363 chiAutomizerObserver]: Analyzing ICFG bb6.c.bpl [2025-02-17 22:45:42,555 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-17 22:45:42,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 41 transitions, 103 flow [2025-02-17 22:45:42,621 INFO L124 PetriNetUnfolderBase]: 6/35 cut-off events. [2025-02-17 22:45:42,623 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-17 22:45:42,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 6/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-17 22:45:42,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 41 transitions, 103 flow [2025-02-17 22:45:42,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 35 transitions, 88 flow [2025-02-17 22:45:42,639 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:42,639 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:42,639 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:42,639 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:42,639 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:42,640 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:42,640 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:42,640 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:42,641 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:42,776 INFO L131 ngComponentsAnalysis]: Automaton has 196 accepting balls. 552 [2025-02-17 22:45:42,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:42,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:42,781 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:42,781 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:42,781 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:42,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 659 states, but on-demand construction may add more states [2025-02-17 22:45:42,797 INFO L131 ngComponentsAnalysis]: Automaton has 196 accepting balls. 552 [2025-02-17 22:45:42,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:42,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:42,798 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:42,798 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:42,802 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:42,803 INFO L754 eck$LassoCheckResult]: Loop: "[92] L24-->L26: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[94] L26-->L24: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:45:42,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:42,806 INFO L85 PathProgramCache]: Analyzing trace with hash 3685, now seen corresponding path program 1 times [2025-02-17 22:45:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:42,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123090191] [2025-02-17 22:45:42,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:42,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:42,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:42,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:42,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:42,867 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:42,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:42,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:42,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:42,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:42,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:42,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash 3907, now seen corresponding path program 1 times [2025-02-17 22:45:42,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:42,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338802379] [2025-02-17 22:45:42,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:42,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:42,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:42,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:42,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:42,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:42,900 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:42,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:42,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:42,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:42,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:42,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:42,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash 3544231, now seen corresponding path program 1 times [2025-02-17 22:45:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:42,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652816693] [2025-02-17 22:45:42,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:42,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:42,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:42,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:42,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:42,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:42,915 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:42,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:42,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:42,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:42,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:42,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:42,975 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:42,976 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:42,976 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:42,976 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:42,976 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:42,976 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:42,976 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:42,976 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:42,976 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:42,977 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:42,977 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:42,988 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:43,041 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:43,041 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:43,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:43,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:43,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:43,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:45:43,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:43,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:43,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:43,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:43,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:43,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:43,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:45:43,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:43,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:43,179 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:43,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:43,184 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:43,184 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:43,184 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:43,184 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:43,185 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:43,185 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:43,185 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:43,185 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:43,185 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:43,185 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:43,185 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:43,187 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:43,212 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:43,215 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:43,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:43,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:43,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:43,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:45:43,221 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:45:43,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:43,234 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:43,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:43,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:43,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:43,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:43,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:43,243 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:43,249 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:43,249 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:43,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:43,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:43,253 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:43,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:45:43,256 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:43,256 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:43,256 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:43,257 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:45:43,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:43,267 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:43,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:43,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:43,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:43,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:43,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:43,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:43,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:43,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:43,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:43,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:43,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:43,319 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:43,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:43,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-17 22:45:43,399 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:43,404 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 659 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2025-02-17 22:45:43,662 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 659 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 2290 states and 7961 transitions. Complement of second has 7 states. [2025-02-17 22:45:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2025-02-17 22:45:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2025-02-17 22:45:43,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 123 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:45:43,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:43,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 123 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:45:43,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:43,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 123 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:45:43,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:43,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2290 states and 7961 transitions. [2025-02-17 22:45:43,709 INFO L131 ngComponentsAnalysis]: Automaton has 212 accepting balls. 504 [2025-02-17 22:45:43,735 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2290 states to 1752 states and 6182 transitions. [2025-02-17 22:45:43,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 682 [2025-02-17 22:45:43,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1044 [2025-02-17 22:45:43,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1752 states and 6182 transitions. [2025-02-17 22:45:43,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:43,741 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1752 states and 6182 transitions. [2025-02-17 22:45:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states and 6182 transitions. [2025-02-17 22:45:43,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1392. [2025-02-17 22:45:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1392 states have (on average 3.630028735632184) internal successors, (5053), 1391 states have internal predecessors, (5053), 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) [2025-02-17 22:45:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5053 transitions. [2025-02-17 22:45:43,825 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1392 states and 5053 transitions. [2025-02-17 22:45:43,825 INFO L432 stractBuchiCegarLoop]: Abstraction has 1392 states and 5053 transitions. [2025-02-17 22:45:43,825 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:43,825 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1392 states and 5053 transitions. [2025-02-17 22:45:43,835 INFO L131 ngComponentsAnalysis]: Automaton has 212 accepting balls. 504 [2025-02-17 22:45:43,835 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:43,835 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:43,836 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:45:43,836 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:43,836 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[123] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:45:43,837 INFO L754 eck$LassoCheckResult]: Loop: "[101] L39-->L41: Formula: (< v_x3_5 v_z_5) InVars {x3=v_x3_5, z=v_z_5} OutVars{x3=v_x3_5, z=v_z_5} AuxVars[] AssignedVars[]" "[103] L41-->L39: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-02-17 22:45:43,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:43,838 INFO L85 PathProgramCache]: Analyzing trace with hash 114358, now seen corresponding path program 1 times [2025-02-17 22:45:43,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:43,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355646196] [2025-02-17 22:45:43,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:43,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:43,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:43,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:43,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:43,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:43,844 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:43,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:43,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:43,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:43,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:43,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:43,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:43,847 INFO L85 PathProgramCache]: Analyzing trace with hash 4195, now seen corresponding path program 1 times [2025-02-17 22:45:43,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:43,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136505675] [2025-02-17 22:45:43,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:43,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:43,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:43,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:43,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:43,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:43,854 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:43,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:43,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:43,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:43,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:43,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:43,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:43,856 INFO L85 PathProgramCache]: Analyzing trace with hash 109901272, now seen corresponding path program 1 times [2025-02-17 22:45:43,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:43,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654399811] [2025-02-17 22:45:43,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:43,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:43,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:43,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:43,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:43,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:43,863 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:43,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:43,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:43,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:43,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:43,867 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:43,883 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:43,883 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:43,883 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:43,883 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:43,884 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:43,884 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:43,884 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:43,884 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:43,884 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:43,884 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:43,884 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:43,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:43,908 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:43,908 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:43,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:43,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:43,911 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:43,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:45:43,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:43,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:43,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:45:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:43,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:43,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:45:43,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:43,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:43,999 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:44,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:45:44,003 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:44,004 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:44,004 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:44,004 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:44,004 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:44,004 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:44,004 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:44,005 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:44,005 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:44,005 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:44,005 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:44,006 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:44,024 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:44,024 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:44,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:44,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:44,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:44,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:45:44,029 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 [2025-02-17 22:45:44,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:44,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:44,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:44,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:44,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:44,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:44,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:44,043 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:44,046 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:44,046 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:44,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:44,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:44,049 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:44,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:45:44,051 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:44,051 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:44,052 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:44,052 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:45:44,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:44,058 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:44,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:44,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:44,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:44,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:44,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:44,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:44,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:44,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:44,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:44,082 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:44,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:44,095 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:44,095 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1392 states and 5053 transitions. cyclomatic complexity: 4043 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2025-02-17 22:45:44,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-02-17 22:45:44,276 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1392 states and 5053 transitions. cyclomatic complexity: 4043. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 4969 states and 18187 transitions. Complement of second has 7 states. [2025-02-17 22:45:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2025-02-17 22:45:44,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-02-17 22:45:44,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 125 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:45:44,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:44,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 125 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:45:44,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:44,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 125 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:45:44,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:44,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4969 states and 18187 transitions. [2025-02-17 22:45:44,322 INFO L131 ngComponentsAnalysis]: Automaton has 156 accepting balls. 332 [2025-02-17 22:45:44,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4969 states to 3137 states and 11599 transitions. [2025-02-17 22:45:44,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 903 [2025-02-17 22:45:44,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1245 [2025-02-17 22:45:44,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3137 states and 11599 transitions. [2025-02-17 22:45:44,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:44,355 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3137 states and 11599 transitions. [2025-02-17 22:45:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states and 11599 transitions. [2025-02-17 22:45:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 2799. [2025-02-17 22:45:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2799 states have (on average 3.7927831368345837) internal successors, (10616), 2798 states have internal predecessors, (10616), 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) [2025-02-17 22:45:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 10616 transitions. [2025-02-17 22:45:44,427 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2799 states and 10616 transitions. [2025-02-17 22:45:44,427 INFO L432 stractBuchiCegarLoop]: Abstraction has 2799 states and 10616 transitions. [2025-02-17 22:45:44,427 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:45:44,427 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2799 states and 10616 transitions. [2025-02-17 22:45:44,443 INFO L131 ngComponentsAnalysis]: Automaton has 156 accepting balls. 332 [2025-02-17 22:45:44,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:44,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:44,443 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:45:44,443 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:44,444 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[123] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[126] L14-->L54: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:45:44,444 INFO L754 eck$LassoCheckResult]: Loop: "[110] L54-->L56: Formula: (< v_x4_5 v_z_9) InVars {x4=v_x4_5, z=v_z_9} OutVars{x4=v_x4_5, z=v_z_9} AuxVars[] AssignedVars[]" "[112] L56-->L54: Formula: (= v_x4_6 (+ v_x4_7 1)) InVars {x4=v_x4_7} OutVars{x4=v_x4_6} AuxVars[] AssignedVars[x4]" [2025-02-17 22:45:44,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:44,444 INFO L85 PathProgramCache]: Analyzing trace with hash 3545224, now seen corresponding path program 1 times [2025-02-17 22:45:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:44,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293181669] [2025-02-17 22:45:44,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:44,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:44,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:44,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:44,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:44,448 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:44,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:44,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:44,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:44,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:44,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:44,450 INFO L85 PathProgramCache]: Analyzing trace with hash 4483, now seen corresponding path program 1 times [2025-02-17 22:45:44,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:44,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126645384] [2025-02-17 22:45:44,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:44,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:44,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:44,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:44,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:44,453 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:44,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:44,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:44,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:44,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:44,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:44,455 INFO L85 PathProgramCache]: Analyzing trace with hash -888003510, now seen corresponding path program 1 times [2025-02-17 22:45:44,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:44,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637841288] [2025-02-17 22:45:44,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:44,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:45:44,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:45:44,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:44,460 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:44,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:45:44,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:45:44,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:44,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:44,475 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:44,475 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:44,475 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:44,475 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:44,475 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:44,475 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:44,476 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:44,476 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:44,476 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:44,476 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:44,476 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:44,476 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:44,508 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:44,508 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:44,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:44,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:44,510 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:44,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:45:44,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:44,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:44,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:44,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:44,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:44,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:44,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:45:44,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:44,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:44,596 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:44,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:45:44,600 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:44,600 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:44,600 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:44,600 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:44,600 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:44,600 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:44,600 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:44,600 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:44,600 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:44,600 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:44,600 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:44,601 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:44,622 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:44,622 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:44,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:44,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:44,624 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:44,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:45:44,627 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 [2025-02-17 22:45:44,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:44,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:44,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:44,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:44,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:44,638 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:44,638 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:44,640 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:44,643 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:44,643 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:44,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:44,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:44,645 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:44,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:45:44,647 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:44,647 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:44,647 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:44,647 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:45:44,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:44,654 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:44,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:44,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:44,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:44,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:44,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:44,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:44,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:44,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:44,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:44,684 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:44,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:44,698 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:44,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2799 states and 10616 transitions. cyclomatic complexity: 8398 Second operand has 3 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) [2025-02-17 22:45:44,853 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2799 states and 10616 transitions. cyclomatic complexity: 8398. Second operand has 3 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) Result 9329 states and 35100 transitions. Complement of second has 7 states. [2025-02-17 22:45:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:44,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 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) [2025-02-17 22:45:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-02-17 22:45:44,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 131 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:45:44,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:44,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 131 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:45:44,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:44,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 131 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:45:44,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:44,855 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9329 states and 35100 transitions. [2025-02-17 22:45:44,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-17 22:45:44,964 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 20 [2025-02-17 22:45:44,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9329 states to 164 states and 417 transitions. [2025-02-17 22:45:44,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2025-02-17 22:45:44,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2025-02-17 22:45:44,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 417 transitions. [2025-02-17 22:45:44,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:44,966 INFO L218 hiAutomatonCegarLoop]: Abstraction has 164 states and 417 transitions. [2025-02-17 22:45:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states and 417 transitions. [2025-02-17 22:45:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2025-02-17 22:45:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 164 states have (on average 2.542682926829268) internal successors, (417), 163 states have internal predecessors, (417), 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) [2025-02-17 22:45:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 417 transitions. [2025-02-17 22:45:44,969 INFO L240 hiAutomatonCegarLoop]: Abstraction has 164 states and 417 transitions. [2025-02-17 22:45:44,969 INFO L432 stractBuchiCegarLoop]: Abstraction has 164 states and 417 transitions. [2025-02-17 22:45:44,969 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:45:44,969 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 164 states and 417 transitions. [2025-02-17 22:45:44,970 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 20 [2025-02-17 22:45:44,970 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:44,970 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:44,970 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:45:44,970 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:44,970 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[91] L24-->L28: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[93] L28-->L29: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[95] L29-->L30-1: Formula: (<= 3 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-02-17 22:45:44,970 INFO L754 eck$LassoCheckResult]: Loop: "[97] L30-1-->L32: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[99] L32-->L30-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:45:44,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash 109870264, now seen corresponding path program 1 times [2025-02-17 22:45:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:44,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042354707] [2025-02-17 22:45:44,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:44,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:44,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:44,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:44,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:44,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:45,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:45:45,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042354707] [2025-02-17 22:45:45,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042354707] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:45:45,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:45:45,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:45:45,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395035337] [2025-02-17 22:45:45,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:45:45,027 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:45:45,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:45,027 INFO L85 PathProgramCache]: Analyzing trace with hash 4067, now seen corresponding path program 1 times [2025-02-17 22:45:45,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:45,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123279394] [2025-02-17 22:45:45,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:45,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:45,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:45,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:45,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:45,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:45,030 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:45,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:45,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:45,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:45,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:45,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:45,045 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:45,045 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:45,045 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:45,045 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:45,045 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:45,045 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,045 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:45,045 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:45,045 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:45:45,045 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:45,045 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:45,045 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:45,061 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:45,061 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:45,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:45,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:45,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-17 22:45:45,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:45,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:45,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:45:45,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:45,086 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:45,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-17 22:45:45,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:45,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:45,154 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:45,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:45,158 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:45,158 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:45,158 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:45,158 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:45,159 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:45,159 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,159 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:45,159 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:45,159 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:45:45,159 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:45,159 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:45,160 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:45,191 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:45,191 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:45,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:45,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:45,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-17 22:45:45,196 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 [2025-02-17 22:45:45,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:45,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:45,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:45,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:45,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:45,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:45,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:45,209 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:45,213 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:45,213 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:45,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:45,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:45,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-17 22:45:45,218 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:45,218 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:45,218 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:45,218 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:45:45,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-17 22:45:45,224 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:45,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:45,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:45,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:45,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:45,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:45,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:45,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:45,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:45,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:45,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:45,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:45,261 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:45,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:45,273 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:45,273 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 417 transitions. cyclomatic complexity: 286 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:45,309 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 417 transitions. cyclomatic complexity: 286. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 355 states and 943 transitions. Complement of second has 7 states. [2025-02-17 22:45:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:45,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2025-02-17 22:45:45,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 58 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:45:45,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:45,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 58 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:45:45,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:45,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 58 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:45:45,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:45,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 355 states and 943 transitions. [2025-02-17 22:45:45,312 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 18 [2025-02-17 22:45:45,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 355 states to 234 states and 585 transitions. [2025-02-17 22:45:45,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2025-02-17 22:45:45,314 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 98 [2025-02-17 22:45:45,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 234 states and 585 transitions. [2025-02-17 22:45:45,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:45,314 INFO L218 hiAutomatonCegarLoop]: Abstraction has 234 states and 585 transitions. [2025-02-17 22:45:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states and 585 transitions. [2025-02-17 22:45:45,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 165. [2025-02-17 22:45:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 165 states have (on average 2.521212121212121) internal successors, (416), 164 states have internal predecessors, (416), 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) [2025-02-17 22:45:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 416 transitions. [2025-02-17 22:45:45,317 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 416 transitions. [2025-02-17 22:45:45,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:45:45,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:45:45,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:45:45,320 INFO L87 Difference]: Start difference. First operand 165 states and 416 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2025-02-17 22:45:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:45:45,342 INFO L93 Difference]: Finished difference Result 95 states and 224 transitions. [2025-02-17 22:45:45,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 224 transitions. [2025-02-17 22:45:45,343 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2025-02-17 22:45:45,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 85 states and 198 transitions. [2025-02-17 22:45:45,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2025-02-17 22:45:45,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2025-02-17 22:45:45,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 198 transitions. [2025-02-17 22:45:45,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:45,344 INFO L218 hiAutomatonCegarLoop]: Abstraction has 85 states and 198 transitions. [2025-02-17 22:45:45,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 198 transitions. [2025-02-17 22:45:45,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2025-02-17 22:45:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 2.3294117647058825) internal successors, (198), 84 states have internal predecessors, (198), 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) [2025-02-17 22:45:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 198 transitions. [2025-02-17 22:45:45,347 INFO L240 hiAutomatonCegarLoop]: Abstraction has 85 states and 198 transitions. [2025-02-17 22:45:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-17 22:45:45,348 INFO L432 stractBuchiCegarLoop]: Abstraction has 85 states and 198 transitions. [2025-02-17 22:45:45,348 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:45:45,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 198 transitions. [2025-02-17 22:45:45,348 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2025-02-17 22:45:45,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:45,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:45,349 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:45:45,349 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:45,349 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[123] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[100] L39-->L43: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[102] L43-->L44: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[91] L24-->L28: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[93] L28-->L29: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[104] L44-->L45-1: Formula: (<= 3 v_x2_6) InVars {x2=v_x2_6} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[]" [2025-02-17 22:45:45,349 INFO L754 eck$LassoCheckResult]: Loop: "[106] L45-1-->L47: Formula: (< v_x4_1 v_z_7) InVars {x4=v_x4_1, z=v_z_7} OutVars{x4=v_x4_1, z=v_z_7} AuxVars[] AssignedVars[]" "[108] L47-->L45-1: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:45:45,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:45,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1302851726, now seen corresponding path program 1 times [2025-02-17 22:45:45,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:45,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480510590] [2025-02-17 22:45:45,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:45,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:45,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:45:45,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:45:45,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:45,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:45,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:45:45,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480510590] [2025-02-17 22:45:45,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480510590] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:45:45,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:45:45,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:45:45,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938591617] [2025-02-17 22:45:45,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:45:45,395 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:45:45,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:45,395 INFO L85 PathProgramCache]: Analyzing trace with hash 4355, now seen corresponding path program 1 times [2025-02-17 22:45:45,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:45,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326785890] [2025-02-17 22:45:45,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:45,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:45,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:45,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:45,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:45,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:45,398 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:45,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:45,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:45,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:45,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:45,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:45,409 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:45,409 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:45,409 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:45,409 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:45,409 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:45,409 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,409 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:45,409 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:45,409 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:45:45,409 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:45,409 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:45,410 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:45,423 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:45,423 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:45,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:45,426 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:45,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-17 22:45:45,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:45,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:45,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-02-17 22:45:45,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:45,449 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:45,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-17 22:45:45,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:45,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:45,517 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:45,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-02-17 22:45:45,521 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:45,521 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:45,521 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:45,521 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:45,521 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:45,521 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,521 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:45,521 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:45,521 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb6.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:45:45,521 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:45,521 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:45,522 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:45,540 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:45,540 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:45,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:45,542 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:45,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-17 22:45:45,544 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 [2025-02-17 22:45:45,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:45,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:45,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:45,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:45,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:45,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:45,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:45,556 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:45,558 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:45,558 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:45,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:45,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:45,560 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:45,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-17 22:45:45,563 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:45,563 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:45,563 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:45,563 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:45:45,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:45,569 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:45,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:45,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:45:45,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:45:45,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:45,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:45,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:45,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:45,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:45,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:45,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:45,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:45,597 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:45,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:45:45,608 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:45:45,608 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 198 transitions. cyclomatic complexity: 131 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-02-17 22:45:45,624 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 198 transitions. cyclomatic complexity: 131. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 124 states and 284 transitions. Complement of second has 6 states. [2025-02-17 22:45:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-02-17 22:45:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2025-02-17 22:45:45,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:45:45,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:45,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 10 letters. Loop has 2 letters. [2025-02-17 22:45:45,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:45,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 34 transitions. Stem has 8 letters. Loop has 4 letters. [2025-02-17 22:45:45,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:45,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 284 transitions. [2025-02-17 22:45:45,626 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:45,626 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 0 states and 0 transitions. [2025-02-17 22:45:45,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:45,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:45,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:45,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:45,627 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:45,627 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:45,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:45:45,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-17 22:45:45,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-17 22:45:45,627 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2025-02-17 22:45:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:45:45,627 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-17 22:45:45,627 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-17 22:45:45,627 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:45,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-17 22:45:45,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:45,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:45,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:45,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:45,627 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:45,627 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-17 22:45:45,628 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:45,628 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-17 22:45:45,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:45:45,628 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:45,628 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:45:45,633 INFO L201 PluginConnector]: Adding new model bb6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:45:45 BoogieIcfgContainer [2025-02-17 22:45:45,633 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:45:45,634 INFO L158 Benchmark]: Toolchain (without parser) took 3343.89ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 86.7MB in the beginning and 41.8MB in the end (delta: 44.9MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. [2025-02-17 22:45:45,634 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:45,634 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.74ms. Allocated memory is still 159.4MB. Free memory was 86.7MB in the beginning and 85.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:45,634 INFO L158 Benchmark]: Boogie Preprocessor took 10.79ms. Allocated memory is still 159.4MB. Free memory was 85.5MB in the beginning and 84.7MB in the end (delta: 797.1kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:45,635 INFO L158 Benchmark]: RCFGBuilder took 169.52ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 75.4MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:45:45,635 INFO L158 Benchmark]: BuchiAutomizer took 3142.21ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 75.2MB in the beginning and 41.8MB in the end (delta: 33.4MB). Peak memory consumption was 32.4MB. Max. memory is 8.0GB. [2025-02-17 22:45:45,636 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.74ms. Allocated memory is still 159.4MB. Free memory was 86.7MB in the beginning and 85.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 10.79ms. Allocated memory is still 159.4MB. Free memory was 85.5MB in the beginning and 84.7MB in the end (delta: 797.1kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 169.52ms. Allocated memory is still 159.4MB. Free memory was 84.7MB in the beginning and 75.4MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3142.21ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 75.2MB in the beginning and 41.8MB in the end (delta: 33.4MB). Peak memory consumption was 32.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 767 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.2s 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, 264 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 259 mSDsluCounter, 324 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 294 IncrementalHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 166 mSDtfsCounter, 294 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:45:45,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:45,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:45:46,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...