/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/4_plus_thr/indep_loops_minus1_6.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:46:24,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:46:24,074 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:46:24,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:46:24,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:46:24,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:46:24,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:46:24,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:46:24,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:46:24,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:46:24,095 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:46:24,095 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:46:24,095 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:46:24,095 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:46:24,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:46:24,096 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:46:24,097 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:46:24,097 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:46:24,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:46:24,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:46:24,097 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:46:24,097 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:46:24,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:46:24,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:46:24,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:46:24,300 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:46:24,300 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:46:24,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/indep_loops_minus1_6.c.bpl [2025-02-17 22:46:24,301 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/indep_loops_minus1_6.c.bpl' [2025-02-17 22:46:24,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:46:24,313 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:46:24,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:46:24,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:46:24,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:46:24,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,328 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:46:24,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:46:24,329 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:46:24,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:46:24,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:46:24,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,335 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:46:24,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:46:24,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:46:24,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:46:24,344 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/1) ... [2025-02-17 22:46:24,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:24,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:24,376 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 22:46:24,380 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 22:46:24,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:46:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:46:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:46:24,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:46:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:46:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:46:24,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:46:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:46:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:46:24,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:46:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:46:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:46:24,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:46:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:46:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:46:24,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-02-17 22:46:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-17 22:46:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-17 22:46:24,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2025-02-17 22:46:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-02-17 22:46:24,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-02-17 22:46:24,401 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 22:46:24,435 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:46:24,436 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:46:24,508 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:46:24,508 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:46:24,518 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:46:24,518 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:46:24,518 INFO L201 PluginConnector]: Adding new model indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:46:24 BoogieIcfgContainer [2025-02-17 22:46:24,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:46:24,519 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:46:24,519 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:46:24,525 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:46:24,525 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:46:24,525 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:46:24" (1/2) ... [2025-02-17 22:46:24,526 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a1ba5a and model type indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:46:24, skipping insertion in model container [2025-02-17 22:46:24,527 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:46:24,527 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "indep_loops_minus1_6.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:46:24" (2/2) ... [2025-02-17 22:46:24,528 INFO L363 chiAutomizerObserver]: Analyzing ICFG indep_loops_minus1_6.c.bpl [2025-02-17 22:46:24,610 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-02-17 22:46:24,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 50 transitions, 142 flow [2025-02-17 22:46:24,659 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2025-02-17 22:46:24,661 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-17 22:46:24,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 38 events. 6/38 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 83 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2025-02-17 22:46:24,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 50 transitions, 142 flow [2025-02-17 22:46:24,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 112 flow [2025-02-17 22:46:24,677 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:46:24,677 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:46:24,677 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:46:24,677 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:46:24,677 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:46:24,677 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:46:24,678 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:46:24,678 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:46:24,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:46:25,526 INFO L131 ngComponentsAnalysis]: Automaton has 1267 accepting balls. 8256 [2025-02-17 22:46:25,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:25,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:25,531 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:46:25,531 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:25,531 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:46:25,531 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 8446 states, but on-demand construction may add more states [2025-02-17 22:46:25,748 INFO L131 ngComponentsAnalysis]: Automaton has 1267 accepting balls. 8256 [2025-02-17 22:46:25,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:25,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:25,749 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:46:25,749 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:25,755 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L29: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:46:25,755 INFO L754 eck$LassoCheckResult]: Loop: "[95] L29-->L31: 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[]" "[97] L31-->L29: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:46:25,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash 152, now seen corresponding path program 1 times [2025-02-17 22:46:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:25,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536365707] [2025-02-17 22:46:25,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:25,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:46:25,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:46:25,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:25,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:25,817 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:25,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:46:25,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:46:25,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:25,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:25,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:25,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:25,833 INFO L85 PathProgramCache]: Analyzing trace with hash 4003, now seen corresponding path program 1 times [2025-02-17 22:46:25,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:25,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821009854] [2025-02-17 22:46:25,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:25,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:25,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:25,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:25,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:25,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:25,841 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:25,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:25,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:25,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:25,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:25,848 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:25,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash 149114, now seen corresponding path program 1 times [2025-02-17 22:46:25,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:25,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379148343] [2025-02-17 22:46:25,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:25,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:25,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:25,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:25,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:25,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:25,856 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:25,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:25,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:25,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:25,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:25,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:25,904 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:25,904 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:25,905 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:25,905 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:25,905 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:25,905 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:25,905 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:25,905 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:25,905 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:46:25,905 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:25,906 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:25,914 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:25,956 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:25,956 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:25,960 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 22:46:25,962 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 22:46:25,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:25,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:25,982 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 22:46:25,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:25,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:25,984 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 22:46:25,986 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 22:46:25,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:25,987 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:26,051 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:26,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-17 22:46:26,055 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:26,055 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:26,055 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:26,055 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:26,055 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:26,055 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:26,055 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:26,055 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:26,055 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:46:26,055 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:26,056 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:26,056 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:26,092 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:26,094 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:26,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:26,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:26,097 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 22:46:26,099 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 22:46:26,100 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 22:46:26,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:26,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:26,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:26,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:26,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:26,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:26,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:26,122 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:26,127 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:26,127 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:26,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:26,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:26,132 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 22:46:26,133 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 22:46:26,134 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:26,134 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:26,135 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:26,135 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:46:26,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-17 22:46:26,143 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:26,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:26,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:46:26,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:46:26,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:26,184 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:26,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:26,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:26,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:26,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:26,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:26,197 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:26,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:26,223 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 22:46:26,247 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 22:46:26,267 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 22:46:26,275 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 8446 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:27,159 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 8446 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23629 states and 150994 transitions. Complement of second has 6 states. [2025-02-17 22:46:27,161 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 22:46:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-02-17 22:46:27,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 92 transitions. Stem has 1 letters. Loop has 2 letters. [2025-02-17 22:46:27,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:27,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 92 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:46:27,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:27,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 92 transitions. Stem has 1 letters. Loop has 4 letters. [2025-02-17 22:46:27,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:27,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23629 states and 150994 transitions. [2025-02-17 22:46:28,001 INFO L131 ngComponentsAnalysis]: Automaton has 1505 accepting balls. 8130 [2025-02-17 22:46:28,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23629 states to 18169 states and 117209 transitions. [2025-02-17 22:46:28,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8253 [2025-02-17 22:46:28,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13211 [2025-02-17 22:46:28,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18169 states and 117209 transitions. [2025-02-17 22:46:28,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:28,442 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18169 states and 117209 transitions. [2025-02-17 22:46:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18169 states and 117209 transitions. [2025-02-17 22:46:29,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18169 to 13213. [2025-02-17 22:46:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13213 states, 13213 states have (on average 6.644743812911527) internal successors, (87797), 13212 states have internal predecessors, (87797), 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 22:46:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13213 states to 13213 states and 87797 transitions. [2025-02-17 22:46:29,395 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13213 states and 87797 transitions. [2025-02-17 22:46:29,395 INFO L432 stractBuchiCegarLoop]: Abstraction has 13213 states and 87797 transitions. [2025-02-17 22:46:29,395 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:46:29,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13213 states and 87797 transitions. [2025-02-17 22:46:29,514 INFO L131 ngComponentsAnalysis]: Automaton has 1505 accepting balls. 8130 [2025-02-17 22:46:29,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:29,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:29,515 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:46:29,515 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:29,516 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L29: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[124] L12-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:46:29,516 INFO L754 eck$LassoCheckResult]: Loop: "[99] L38-->L40: Formula: (< v_x2_1 v_z_3) InVars {x2=v_x2_1, z=v_z_3} OutVars{x2=v_x2_1, z=v_z_3} AuxVars[] AssignedVars[]" "[101] L40-->L38: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-02-17 22:46:29,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 4836, now seen corresponding path program 1 times [2025-02-17 22:46:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:29,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801339849] [2025-02-17 22:46:29,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:29,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:29,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:29,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:29,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:29,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:29,525 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:29,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:29,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:29,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:29,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:29,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:29,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash 4131, now seen corresponding path program 1 times [2025-02-17 22:46:29,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:29,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232778484] [2025-02-17 22:46:29,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:29,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:29,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:29,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:29,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:29,537 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:29,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:29,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:29,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:29,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:29,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:29,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash 4650566, now seen corresponding path program 1 times [2025-02-17 22:46:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:29,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954482431] [2025-02-17 22:46:29,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:29,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:29,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:29,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:29,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:29,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:29,547 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:29,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:29,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:29,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:29,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:29,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:29,564 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:29,564 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:29,565 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:29,565 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:29,565 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:29,565 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:29,565 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:29,565 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:29,565 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:46:29,565 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:29,565 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:29,565 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:29,582 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:29,582 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:29,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:29,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:29,584 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 22:46:29,586 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 22:46:29,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:29,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:29,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:29,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:29,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:29,607 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 22:46:29,608 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 22:46:29,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:29,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:29,675 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:29,679 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 22:46:29,680 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:29,680 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:29,680 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:29,680 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:29,680 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:29,680 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:29,680 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:29,680 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:29,680 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:46:29,680 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:29,680 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:29,681 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:29,700 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:29,701 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:29,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:29,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:29,703 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 22:46:29,705 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 22:46:29,706 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 22:46:29,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:29,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:29,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:29,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:29,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:29,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:29,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:29,721 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:29,725 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:29,725 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:29,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:29,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:29,727 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 22:46:29,729 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 22:46:29,730 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:29,730 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:29,730 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:29,730 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x2) = 1*z - 1*x2 Supporting invariants [] [2025-02-17 22:46:29,736 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 22:46:29,737 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:29,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:29,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:29,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:29,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:29,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:29,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:29,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:29,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:29,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:29,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:29,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:29,766 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:29,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:29,780 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 22:46:29,780 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 22:46:29,781 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13213 states and 87797 transitions. cyclomatic complexity: 76421 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 22:46:30,055 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 22:46:30,694 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13213 states and 87797 transitions. cyclomatic complexity: 76421. 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 40571 states and 280338 transitions. Complement of second has 6 states. [2025-02-17 22:46:30,695 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 22:46:30,695 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 22:46:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-02-17 22:46:30,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 94 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:46:30,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:30,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 94 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:46:30,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:30,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 94 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:46:30,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:30,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40571 states and 280338 transitions. [2025-02-17 22:46:31,395 INFO L131 ngComponentsAnalysis]: Automaton has 1790 accepting balls. 7850 [2025-02-17 22:46:32,023 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40571 states to 30573 states and 212553 transitions. [2025-02-17 22:46:32,024 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10931 [2025-02-17 22:46:32,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16702 [2025-02-17 22:46:32,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30573 states and 212553 transitions. [2025-02-17 22:46:32,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:32,083 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30573 states and 212553 transitions. [2025-02-17 22:46:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30573 states and 212553 transitions. [2025-02-17 22:46:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30573 to 24802. [2025-02-17 22:46:32,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24802 states, 24802 states have (on average 7.235908394484316) internal successors, (179465), 24801 states have internal predecessors, (179465), 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 22:46:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24802 states to 24802 states and 179465 transitions. [2025-02-17 22:46:33,182 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24802 states and 179465 transitions. [2025-02-17 22:46:33,183 INFO L432 stractBuchiCegarLoop]: Abstraction has 24802 states and 179465 transitions. [2025-02-17 22:46:33,183 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:46:33,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24802 states and 179465 transitions. [2025-02-17 22:46:33,493 INFO L131 ngComponentsAnalysis]: Automaton has 1790 accepting balls. 7850 [2025-02-17 22:46:33,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:33,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:33,494 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:46:33,494 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:33,494 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L29: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[124] L12-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[127] L13-->L47: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:46:33,495 INFO L754 eck$LassoCheckResult]: Loop: "[103] L47-->L49: Formula: (< v_x3_1 v_z_5) InVars {x3=v_x3_1, z=v_z_5} OutVars{x3=v_x3_1, z=v_z_5} AuxVars[] AssignedVars[]" "[105] L49-->L47: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:46:33,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:33,495 INFO L85 PathProgramCache]: Analyzing trace with hash 150043, now seen corresponding path program 1 times [2025-02-17 22:46:33,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:33,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775623767] [2025-02-17 22:46:33,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:33,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:33,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:33,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:33,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:33,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:33,499 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:33,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:33,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:33,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:33,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:33,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:33,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash 4259, now seen corresponding path program 1 times [2025-02-17 22:46:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:33,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818990793] [2025-02-17 22:46:33,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:33,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:33,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:33,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:33,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:33,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:33,504 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:33,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:33,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:33,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:33,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:33,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:33,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:33,507 INFO L85 PathProgramCache]: Analyzing trace with hash 144194621, now seen corresponding path program 1 times [2025-02-17 22:46:33,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:33,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230605202] [2025-02-17 22:46:33,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:33,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:33,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:33,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:33,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:33,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:33,513 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:33,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:33,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:33,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:33,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:33,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:33,536 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:33,536 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:33,536 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:33,537 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:33,537 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:33,537 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:33,537 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:33,537 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:33,537 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:46:33,537 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:33,537 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:33,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:33,560 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:33,560 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:33,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:33,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:33,563 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 22:46:33,564 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 22:46:33,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:33,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:33,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-17 22:46:33,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:33,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:33,586 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 22:46:33,588 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 22:46:33,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:33,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:33,657 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:33,661 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 22:46:33,662 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:33,662 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:33,662 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:33,662 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:33,662 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:33,662 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:33,662 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:33,662 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:33,662 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:46:33,662 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:33,662 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:33,663 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:33,681 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:33,681 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:33,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:33,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:33,684 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 22:46:33,686 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 22:46:33,687 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 22:46:33,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:33,698 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:33,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:33,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:33,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:33,699 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:33,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:33,701 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:33,704 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:46:33,704 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:46:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:33,707 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 22:46:33,708 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 22:46:33,709 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:33,709 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:33,709 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:33,709 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:46:33,715 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 22:46:33,716 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:33,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:33,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:33,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:33,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:33,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:33,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:33,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:33,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:33,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:33,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:33,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:33,745 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:33,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:33,758 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 22:46:33,759 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 22:46:33,759 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24802 states and 179465 transitions. cyclomatic complexity: 157464 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 22:46:34,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:35,051 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24802 states and 179465 transitions. cyclomatic complexity: 157464. 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 78128 states and 578407 transitions. Complement of second has 6 states. [2025-02-17 22:46:35,051 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 22:46:35,052 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 22:46:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-17 22:46:35,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:46:35,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:35,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:46:35,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:35,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 98 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:46:35,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:35,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78128 states and 578407 transitions. [2025-02-17 22:46:36,866 INFO L131 ngComponentsAnalysis]: Automaton has 2005 accepting balls. 7290 [2025-02-17 22:46:37,834 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78128 states to 56530 states and 419074 transitions. [2025-02-17 22:46:37,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16133 [2025-02-17 22:46:37,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21868 [2025-02-17 22:46:37,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56530 states and 419074 transitions. [2025-02-17 22:46:37,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:37,905 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56530 states and 419074 transitions. [2025-02-17 22:46:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56530 states and 419074 transitions. [2025-02-17 22:46:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56530 to 47576. [2025-02-17 22:46:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47576 states, 47576 states have (on average 7.676706742895577) internal successors, (365227), 47575 states have internal predecessors, (365227), 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 22:46:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47576 states to 47576 states and 365227 transitions. [2025-02-17 22:46:40,184 INFO L240 hiAutomatonCegarLoop]: Abstraction has 47576 states and 365227 transitions. [2025-02-17 22:46:40,184 INFO L432 stractBuchiCegarLoop]: Abstraction has 47576 states and 365227 transitions. [2025-02-17 22:46:40,184 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:46:40,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47576 states and 365227 transitions. [2025-02-17 22:46:40,646 INFO L131 ngComponentsAnalysis]: Automaton has 2005 accepting balls. 7290 [2025-02-17 22:46:40,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:40,647 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:40,647 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:46:40,647 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:40,648 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L29: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[124] L12-->L38: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[127] L13-->L47: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[130] L14-->L56: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-02-17 22:46:40,648 INFO L754 eck$LassoCheckResult]: Loop: "[107] L56-->L58: 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[]" "[109] L58-->L56: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:46:40,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash 4651463, now seen corresponding path program 1 times [2025-02-17 22:46:40,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:40,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533215668] [2025-02-17 22:46:40,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:40,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:40,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:40,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:40,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:40,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:40,652 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:40,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:40,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:40,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:40,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:40,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:40,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash 4387, now seen corresponding path program 1 times [2025-02-17 22:46:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:40,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856779033] [2025-02-17 22:46:40,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:40,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:40,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:40,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:40,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:40,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:40,657 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:40,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:40,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:40,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:40,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:40,659 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:40,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash 175092073, now seen corresponding path program 1 times [2025-02-17 22:46:40,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:40,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436678114] [2025-02-17 22:46:40,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:40,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:40,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:46:40,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:46:40,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:40,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:40,662 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:40,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:46:40,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:46:40,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:40,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:40,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:40,684 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:40,684 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:40,684 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:40,684 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:40,684 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:40,684 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:40,685 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:40,685 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:40,685 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:46:40,685 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:40,685 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:40,685 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:40,698 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:40,699 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:40,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:40,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:40,704 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 22:46:40,705 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 22:46:40,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:40,706 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:40,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:40,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:40,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:40,728 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 22:46:40,907 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 22:46:40,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:40,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:40,976 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:40,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-17 22:46:40,980 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:40,980 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:40,981 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:40,981 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:40,981 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:40,981 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:40,981 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:40,981 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:40,981 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:46:40,981 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:40,981 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:40,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:40,997 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:40,997 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:40,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:40,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:41,000 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 22:46:41,001 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 22:46:41,002 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 22:46:41,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:41,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:41,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:41,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:41,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:41,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:41,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:41,016 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:41,021 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:41,021 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:41,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:41,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:41,024 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 22:46:41,025 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 22:46:41,026 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:41,026 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:41,027 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:41,027 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:46:41,032 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 22:46:41,033 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:41,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:41,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:41,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:41,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:41,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:41,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:41,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:41,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:41,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:41,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:41,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:41,065 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:41,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:41,079 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 22:46:41,080 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 22:46:41,080 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47576 states and 365227 transitions. cyclomatic complexity: 321955 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 22:46:41,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:43,523 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47576 states and 365227 transitions. cyclomatic complexity: 321955. 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 142707 states and 1106481 transitions. Complement of second has 6 states. [2025-02-17 22:46:43,523 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 22:46:43,523 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 22:46:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-02-17 22:46:43,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 102 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:46:43,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:43,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 102 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:46:43,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:43,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 102 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:46:43,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:43,524 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142707 states and 1106481 transitions. [2025-02-17 22:46:47,401 INFO L131 ngComponentsAnalysis]: Automaton has 1962 accepting balls. 6226 [2025-02-17 22:46:49,287 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142707 states to 97453 states and 754178 transitions. [2025-02-17 22:46:49,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23450 [2025-02-17 22:46:49,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28681 [2025-02-17 22:46:49,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97453 states and 754178 transitions. [2025-02-17 22:46:49,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:49,418 INFO L218 hiAutomatonCegarLoop]: Abstraction has 97453 states and 754178 transitions. [2025-02-17 22:46:49,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97453 states and 754178 transitions. [2025-02-17 22:46:52,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97453 to 84625. [2025-02-17 22:46:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84625 states, 84625 states have (on average 7.963344165435746) internal successors, (673898), 84624 states have internal predecessors, (673898), 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 22:46:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84625 states to 84625 states and 673898 transitions. [2025-02-17 22:46:53,911 INFO L240 hiAutomatonCegarLoop]: Abstraction has 84625 states and 673898 transitions. [2025-02-17 22:46:53,912 INFO L432 stractBuchiCegarLoop]: Abstraction has 84625 states and 673898 transitions. [2025-02-17 22:46:53,912 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:46:53,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84625 states and 673898 transitions. [2025-02-17 22:46:55,089 INFO L131 ngComponentsAnalysis]: Automaton has 1962 accepting balls. 6226 [2025-02-17 22:46:55,090 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:55,090 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:55,091 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:46:55,091 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:46:55,091 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L29: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[124] L12-->L38: 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]" "[127] L13-->L47: 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]" "[130] L14-->L56: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" "[133] L15-->L65: Formula: (and (= v_thread5Thread1of1ForFork4_thidvar4_2 5) (= v_thread5Thread1of1ForFork4_thidvar1_2 5) (= v_thread5Thread1of1ForFork4_thidvar0_2 5) (= v_thread5Thread1of1ForFork4_thidvar3_2 5) (= v_thread5Thread1of1ForFork4_thidvar2_2 5)) InVars {} OutVars{thread5Thread1of1ForFork4_thidvar0=v_thread5Thread1of1ForFork4_thidvar0_2, thread5Thread1of1ForFork4_thidvar1=v_thread5Thread1of1ForFork4_thidvar1_2, thread5Thread1of1ForFork4_thidvar2=v_thread5Thread1of1ForFork4_thidvar2_2, thread5Thread1of1ForFork4_thidvar3=v_thread5Thread1of1ForFork4_thidvar3_2, thread5Thread1of1ForFork4_thidvar4=v_thread5Thread1of1ForFork4_thidvar4_2} AuxVars[] AssignedVars[thread5Thread1of1ForFork4_thidvar0, thread5Thread1of1ForFork4_thidvar1, thread5Thread1of1ForFork4_thidvar2, thread5Thread1of1ForFork4_thidvar3, thread5Thread1of1ForFork4_thidvar4]" [2025-02-17 22:46:55,091 INFO L754 eck$LassoCheckResult]: Loop: "[111] L65-->L67: Formula: (< v_x5_1 v_z_9) InVars {x5=v_x5_1, z=v_z_9} OutVars{x5=v_x5_1, z=v_z_9} AuxVars[] AssignedVars[]" "[113] L67-->L68: Formula: (= v_x5_2 (+ v_x5_3 1)) InVars {x5=v_x5_3} OutVars{x5=v_x5_2} AuxVars[] AssignedVars[x5]" "[114] L68-->L65: Formula: (= v_x6_1 (+ v_x6_2 1)) InVars {x6=v_x6_2} OutVars{x6=v_x6_1} AuxVars[] AssignedVars[x6]" [2025-02-17 22:46:55,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:55,092 INFO L85 PathProgramCache]: Analyzing trace with hash 144195486, now seen corresponding path program 1 times [2025-02-17 22:46:55,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:55,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937418392] [2025-02-17 22:46:55,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:55,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:55,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:55,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:55,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:55,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:55,097 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:55,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:55,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:55,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:55,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:55,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:55,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:55,102 INFO L85 PathProgramCache]: Analyzing trace with hash 140079, now seen corresponding path program 1 times [2025-02-17 22:46:55,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426799111] [2025-02-17 22:46:55,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:55,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:55,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:55,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:55,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:55,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:55,108 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:55,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:55,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:55,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:55,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:55,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:55,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash 760537714, now seen corresponding path program 1 times [2025-02-17 22:46:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5023569] [2025-02-17 22:46:55,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:55,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:46:55,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:46:55,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:55,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:55,120 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:55,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:46:55,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:46:55,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:55,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:55,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:55,156 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:55,156 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:55,156 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:55,156 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:55,156 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:55,156 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:55,156 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:55,156 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:55,156 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:46:55,156 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:55,156 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:55,157 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:55,160 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:55,187 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:55,187 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:55,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:55,190 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 22:46:55,191 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 22:46:55,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:55,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:55,209 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 22:46:55,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:55,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:55,211 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 22:46:55,212 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 22:46:55,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:55,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:55,237 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:46:55,237 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {x6=0} Honda state: {x6=0} Generalized eigenvectors: [{x6=2}, {x6=-8}, {x6=7}] Lambdas: [5, 1, 1] Nus: [1, 0] [2025-02-17 22:46:55,243 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 22:46:55,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:55,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:55,245 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 22:46:55,246 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 22:46:55,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:55,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:55,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-17 22:46:55,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:55,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:55,266 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 22:46:55,267 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 22:46:55,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:55,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:55,333 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:55,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-17 22:46:55,337 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:55,337 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:55,337 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:55,337 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:55,337 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:55,337 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:55,337 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:55,337 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:55,337 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:46:55,337 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:55,337 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:55,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:55,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:55,359 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:55,359 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:55,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:55,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:55,361 INFO L229 MonitoredProcess]: Starting monitored process 22 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 22:46:55,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-17 22:46:55,364 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 22:46:55,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:55,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:55,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:55,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:55,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:55,374 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:55,374 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:55,375 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:46:55,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-02-17 22:46:55,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:55,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:55,382 INFO L229 MonitoredProcess]: Starting monitored process 23 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 22:46:55,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-17 22:46:55,385 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 22:46:55,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:55,395 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:55,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:55,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:55,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:55,396 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:55,396 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:55,397 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:55,400 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:46:55,400 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:46:55,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:55,406 INFO L229 MonitoredProcess]: Starting monitored process 24 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 22:46:55,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-17 22:46:55,409 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:55,409 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:55,410 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:55,410 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x5) = 1*z - 1*x5 Supporting invariants [] [2025-02-17 22:46:55,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-02-17 22:46:55,427 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:55,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:55,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:55,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:55,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:55,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:55,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:55,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:55,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:46:55,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:46:55,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:55,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:55,472 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:55,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:55,511 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 22:46:55,512 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:46:55,512 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 84625 states and 673898 transitions. cyclomatic complexity: 595565 Second operand has 4 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 22:46:55,895 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Exception during sending of exit command (exit): Broken pipe [2025-02-17 22:46:55,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:59,401 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 84625 states and 673898 transitions. cyclomatic complexity: 595565. Second operand has 4 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) Result 229901 states and 1831372 transitions. Complement of second has 6 states. [2025-02-17 22:46:59,402 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 22:46:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 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 22:46:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2025-02-17 22:46:59,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:46:59,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:59,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:46:59,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:59,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 105 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:46:59,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:59,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 229901 states and 1831372 transitions. [2025-02-17 22:47:05,304 INFO L131 ngComponentsAnalysis]: Automaton has 1706 accepting balls. 3412 [2025-02-17 22:47:08,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 229901 states to 128109 states and 1023310 transitions. [2025-02-17 22:47:08,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28041 [2025-02-17 22:47:08,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30428 [2025-02-17 22:47:08,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128109 states and 1023310 transitions. [2025-02-17 22:47:08,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:47:08,220 INFO L218 hiAutomatonCegarLoop]: Abstraction has 128109 states and 1023310 transitions. [2025-02-17 22:47:08,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128109 states and 1023310 transitions. [2025-02-17 22:47:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128109 to 119234. [2025-02-17 22:47:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119234 states, 119234 states have (on average 8.066348524749651) internal successors, (961783), 119233 states have internal predecessors, (961783), 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 22:47:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119234 states to 119234 states and 961783 transitions. [2025-02-17 22:47:13,742 INFO L240 hiAutomatonCegarLoop]: Abstraction has 119234 states and 961783 transitions. [2025-02-17 22:47:13,742 INFO L432 stractBuchiCegarLoop]: Abstraction has 119234 states and 961783 transitions. [2025-02-17 22:47:13,742 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-17 22:47:13,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 119234 states and 961783 transitions. [2025-02-17 22:47:15,503 INFO L131 ngComponentsAnalysis]: Automaton has 1706 accepting balls. 3412 [2025-02-17 22:47:15,504 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:47:15,504 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:47:15,505 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:47:15,505 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:47:15,506 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L29: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[124] L12-->L38: 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]" "[127] L13-->L47: 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]" "[130] L14-->L56: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" "[133] L15-->L65: Formula: (and (= v_thread5Thread1of1ForFork4_thidvar4_2 5) (= v_thread5Thread1of1ForFork4_thidvar1_2 5) (= v_thread5Thread1of1ForFork4_thidvar0_2 5) (= v_thread5Thread1of1ForFork4_thidvar3_2 5) (= v_thread5Thread1of1ForFork4_thidvar2_2 5)) InVars {} OutVars{thread5Thread1of1ForFork4_thidvar0=v_thread5Thread1of1ForFork4_thidvar0_2, thread5Thread1of1ForFork4_thidvar1=v_thread5Thread1of1ForFork4_thidvar1_2, thread5Thread1of1ForFork4_thidvar2=v_thread5Thread1of1ForFork4_thidvar2_2, thread5Thread1of1ForFork4_thidvar3=v_thread5Thread1of1ForFork4_thidvar3_2, thread5Thread1of1ForFork4_thidvar4=v_thread5Thread1of1ForFork4_thidvar4_2} AuxVars[] AssignedVars[thread5Thread1of1ForFork4_thidvar0, thread5Thread1of1ForFork4_thidvar1, thread5Thread1of1ForFork4_thidvar2, thread5Thread1of1ForFork4_thidvar3, thread5Thread1of1ForFork4_thidvar4]" "[136] L16-->L75: Formula: (and (= v_thread6Thread1of1ForFork5_thidvar3_2 6) (= v_thread6Thread1of1ForFork5_thidvar5_2 6) (= v_thread6Thread1of1ForFork5_thidvar4_2 6) (= v_thread6Thread1of1ForFork5_thidvar2_2 6) (= v_thread6Thread1of1ForFork5_thidvar0_2 6) (= v_thread6Thread1of1ForFork5_thidvar1_2 6)) InVars {} OutVars{thread6Thread1of1ForFork5_thidvar0=v_thread6Thread1of1ForFork5_thidvar0_2, thread6Thread1of1ForFork5_thidvar1=v_thread6Thread1of1ForFork5_thidvar1_2, thread6Thread1of1ForFork5_thidvar2=v_thread6Thread1of1ForFork5_thidvar2_2, thread6Thread1of1ForFork5_thidvar3=v_thread6Thread1of1ForFork5_thidvar3_2, thread6Thread1of1ForFork5_thidvar4=v_thread6Thread1of1ForFork5_thidvar4_2, thread6Thread1of1ForFork5_thidvar5=v_thread6Thread1of1ForFork5_thidvar5_2} AuxVars[] AssignedVars[thread6Thread1of1ForFork5_thidvar0, thread6Thread1of1ForFork5_thidvar1, thread6Thread1of1ForFork5_thidvar2, thread6Thread1of1ForFork5_thidvar3, thread6Thread1of1ForFork5_thidvar4, thread6Thread1of1ForFork5_thidvar5]" [2025-02-17 22:47:15,506 INFO L754 eck$LassoCheckResult]: Loop: "[116] L75-->L77: Formula: (< v_x6_3 v_z_11) InVars {x6=v_x6_3, z=v_z_11} OutVars{x6=v_x6_3, z=v_z_11} AuxVars[] AssignedVars[]" "[118] L77-->L75: Formula: (= v_x6_4 (+ v_x6_5 1)) InVars {x6=v_x6_5} OutVars{x6=v_x6_4} AuxVars[] AssignedVars[x6]" [2025-02-17 22:47:15,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash 175092906, now seen corresponding path program 1 times [2025-02-17 22:47:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139600079] [2025-02-17 22:47:15,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:15,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:15,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:15,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:15,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:15,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:15,510 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:15,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:15,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:15,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:15,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:15,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:15,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash 4675, now seen corresponding path program 1 times [2025-02-17 22:47:15,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:15,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888219549] [2025-02-17 22:47:15,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:15,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:15,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:15,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:15,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:15,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:15,516 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:15,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:15,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:15,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:15,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:15,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:15,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash 760561836, now seen corresponding path program 1 times [2025-02-17 22:47:15,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:47:15,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123638417] [2025-02-17 22:47:15,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:47:15,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:47:15,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:47:15,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:47:15,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:15,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:15,522 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:47:15,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:47:15,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:47:15,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:15,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:47:15,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:47:15,535 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:15,535 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:15,535 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:15,535 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:15,535 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:47:15,535 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:15,535 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:15,535 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:15,536 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration6_Loop [2025-02-17 22:47:15,536 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:15,536 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:15,536 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:15,553 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:15,553 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:47:15,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:15,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:15,555 INFO L229 MonitoredProcess]: Starting monitored process 25 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 22:47:15,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-17 22:47:15,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:47:15,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:15,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:15,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:15,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:15,577 INFO L229 MonitoredProcess]: Starting monitored process 26 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 22:47:15,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-17 22:47:15,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:47:15,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:47:15,641 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:47:15,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-17 22:47:15,645 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:47:15,645 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:47:15,645 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:47:15,645 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:47:15,645 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:47:15,645 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:15,645 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:47:15,645 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:47:15,645 INFO L132 ssoRankerPreferences]: Filename of dumped script: indep_loops_minus1_6.c.bpl_petrified1_Iteration6_Loop [2025-02-17 22:47:15,645 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:47:15,645 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:47:15,646 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:47:15,662 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:47:15,662 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:47:15,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:15,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:15,664 INFO L229 MonitoredProcess]: Starting monitored process 27 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 22:47:15,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-02-17 22:47:15,667 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 22:47:15,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:47:15,677 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:47:15,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:47:15,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:47:15,677 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:47:15,679 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:47:15,679 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:47:15,680 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:47:15,683 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:47:15,683 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:47:15,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:47:15,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:47:15,685 INFO L229 MonitoredProcess]: Starting monitored process 28 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 22:47:15,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-02-17 22:47:15,688 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:47:15,688 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:47:15,688 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:47:15,688 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x6, z) = -1*x6 + 1*z Supporting invariants [] [2025-02-17 22:47:15,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:15,696 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:47:15,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:47:15,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:47:15,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:47:15,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:15,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:15,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:47:15,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:15,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:47:15,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:47:15,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:47:15,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:47:15,733 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:47:15,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:47:15,746 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 22:47:15,746 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 22:47:15,746 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 119234 states and 961783 transitions. cyclomatic complexity: 851527 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 22:47:16,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2025-02-17 22:47:22,620 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 119234 states and 961783 transitions. cyclomatic complexity: 851527. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Result 389612 states and 3089273 transitions. Complement of second has 6 states. [2025-02-17 22:47:22,622 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 22:47:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 22:47:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-17 22:47:22,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 110 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:47:22,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:22,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 110 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:47:22,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:22,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 110 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:47:22,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:47:22,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 389612 states and 3089273 transitions.