/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/bb7.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:45,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:45,175 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:45,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:45,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:45,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:45,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:45,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:45,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:45,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:45,193 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:45,193 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:45,193 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:45,193 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:45,193 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:45,193 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:45,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:45,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:45,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:45,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:45,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:45,195 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:45,195 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:45,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:45,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:45,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:45,415 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:45,416 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:45,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/bb7.c.bpl [2025-04-26 16:24:45,417 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/bb7.c.bpl' [2025-04-26 16:24:45,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:45,430 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:45,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:45,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:45,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:45,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,463 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:45,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:45,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:45,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:45,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:45,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,475 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:45,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:45,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:45,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:45,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/1) ... [2025-04-26 16:24:45,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:45,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:45,515 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) [2025-04-26 16:24:45,517 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 [2025-04-26 16:24:45,533 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:45,533 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:45,533 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:24:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:24:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:24:45,533 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:45,533 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:24:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:24:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:24:45,534 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:24:45,570 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:45,571 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:45,678 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:45,678 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:45,685 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:45,686 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:45,686 INFO L201 PluginConnector]: Adding new model bb7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:45 BoogieIcfgContainer [2025-04-26 16:24:45,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:45,687 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:45,687 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:45,691 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:45,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:45,691 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:45" (1/2) ... [2025-04-26 16:24:45,692 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b7c48c1 and model type bb7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:45, skipping insertion in model container [2025-04-26 16:24:45,692 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:45,693 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:45" (2/2) ... [2025-04-26 16:24:45,693 INFO L376 chiAutomizerObserver]: Analyzing ICFG bb7.c.bpl [2025-04-26 16:24:45,740 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 16:24:45,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 136 flow [2025-04-26 16:24:45,800 INFO L116 PetriNetUnfolderBase]: 8/46 cut-off events. [2025-04-26 16:24:45,803 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-26 16:24:45,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 8/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 114 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-04-26 16:24:45,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 54 transitions, 136 flow [2025-04-26 16:24:45,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 46 transitions, 116 flow [2025-04-26 16:24:45,811 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 51 places, 46 transitions, 116 flow [2025-04-26 16:24:45,819 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:45,819 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:45,819 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:45,819 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:45,819 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:45,820 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:45,820 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:45,820 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:45,822 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:46,324 INFO L131 ngComponentsAnalysis]: Automaton has 1388 accepting balls. 4840 [2025-04-26 16:24:46,325 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:46,325 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:46,329 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:46,329 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:46,331 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:46,331 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 5267 states, but on-demand construction may add more states [2025-04-26 16:24:46,429 INFO L131 ngComponentsAnalysis]: Automaton has 1388 accepting balls. 4840 [2025-04-26 16:24:46,430 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:46,430 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:46,430 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:46,430 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:46,435 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:24:46,436 INFO L754 eck$LassoCheckResult]: Loop: "[121] L26-->L28: 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[]" "[123] L28-->L26: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:24:46,440 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 4591, now seen corresponding path program 1 times [2025-04-26 16:24:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:46,445 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658181519] [2025-04-26 16:24:46,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:46,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:46,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:46,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:46,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,494 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:46,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:46,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:46,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:46,515 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash 4835, now seen corresponding path program 1 times [2025-04-26 16:24:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:46,516 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278940672] [2025-04-26 16:24:46,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:46,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:46,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:46,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:46,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,525 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:46,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:46,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:46,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,532 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:46,533 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,533 INFO L85 PathProgramCache]: Analyzing trace with hash 4415825, now seen corresponding path program 1 times [2025-04-26 16:24:46,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:46,533 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378065120] [2025-04-26 16:24:46,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:46,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:46,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:46,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,541 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:46,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:46,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:46,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:46,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:46,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:46,606 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:46,606 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:46,606 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:46,607 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:46,607 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:46,608 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,608 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:46,608 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:46,608 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:46,608 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:46,608 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:46,617 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:46,688 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:46,689 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:46,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,697 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) [2025-04-26 16:24:46,701 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 [2025-04-26 16:24:46,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:46,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:46,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-04-26 16:24:46,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,749 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) [2025-04-26 16:24:46,753 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 [2025-04-26 16:24:46,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:46,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:46,862 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:46,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:46,868 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:46,868 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:46,868 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:46,868 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:46,868 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:46,868 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,868 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:46,868 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:46,868 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:46,868 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:46,869 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:46,871 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:46,906 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:46,910 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:46,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,915 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) [2025-04-26 16:24:46,917 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 [2025-04-26 16:24:46,918 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:24:46,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:46,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:46,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:46,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:46,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:46,936 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:46,937 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:46,943 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:46,948 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:46,949 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:46,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:46,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:46,953 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) [2025-04-26 16:24:46,954 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 [2025-04-26 16:24:46,955 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:46,958 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 [2025-04-26 16:24:46,958 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:46,959 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:46,959 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-04-26 16:24:46,965 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 [2025-04-26 16:24:46,969 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:46,992 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:46,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:47,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:47,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:47,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:47,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:47,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:47,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:47,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:47,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:47,018 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:47,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:47,066 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 [2025-04-26 16:24:47,069 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 5267 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:47,571 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 5267 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 18338 states and 85592 transitions. Complement of second has 7 states. [2025-04-26 16:24:47,574 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (in total 4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2025-04-26 16:24:47,588 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:24:47,589 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:47,589 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:47,589 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:47,589 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:47,589 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:47,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18338 states and 85592 transitions. [2025-04-26 16:24:48,128 INFO L131 ngComponentsAnalysis]: Automaton has 1756 accepting balls. 5000 [2025-04-26 16:24:48,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18338 states to 15000 states and 70689 transitions. [2025-04-26 16:24:48,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5844 [2025-04-26 16:24:48,453 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8960 [2025-04-26 16:24:48,453 INFO L74 IsDeterministic]: Start isDeterministic. Operand 15000 states and 70689 transitions. [2025-04-26 16:24:48,454 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:48,454 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15000 states and 70689 transitions. [2025-04-26 16:24:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15000 states and 70689 transitions. [2025-04-26 16:24:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15000 to 11886. [2025-04-26 16:24:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11886 states, 11886 states have (on average 4.836362106680128) internal successors, (in total 57485), 11885 states have internal predecessors, (57485), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11886 states to 11886 states and 57485 transitions. [2025-04-26 16:24:48,993 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11886 states and 57485 transitions. [2025-04-26 16:24:48,993 INFO L438 stractBuchiCegarLoop]: Abstraction has 11886 states and 57485 transitions. [2025-04-26 16:24:48,993 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:24:48,993 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11886 states and 57485 transitions. [2025-04-26 16:24:49,082 INFO L131 ngComponentsAnalysis]: Automaton has 1756 accepting balls. 5000 [2025-04-26 16:24:49,083 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:49,083 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:49,084 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:24:49,084 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:49,085 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:24:49,085 INFO L754 eck$LassoCheckResult]: Loop: "[130] L41-->L43: Formula: (< v_x3_5 v_z_5) InVars {x3=v_x3_5, z=v_z_5} OutVars{x3=v_x3_5, z=v_z_5} AuxVars[] AssignedVars[]" "[132] L43-->L41: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-04-26 16:24:49,085 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash 142482, now seen corresponding path program 1 times [2025-04-26 16:24:49,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:49,086 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337405139] [2025-04-26 16:24:49,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:49,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:49,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:49,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,093 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:49,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:49,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:49,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,098 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:49,098 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash 5123, now seen corresponding path program 1 times [2025-04-26 16:24:49,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:49,100 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085321700] [2025-04-26 16:24:49,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:49,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:49,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:49,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:49,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,103 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:49,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:49,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:49,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:49,108 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash 136929364, now seen corresponding path program 1 times [2025-04-26 16:24:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:49,109 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155311956] [2025-04-26 16:24:49,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:49,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:49,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:49,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:49,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,114 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:49,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:24:49,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:24:49,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:49,138 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:49,138 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:49,138 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:49,138 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:49,138 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:49,138 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,138 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:49,138 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:49,138 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:49,138 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:49,138 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:49,139 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:49,157 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:49,157 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:49,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:49,161 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) [2025-04-26 16:24:49,162 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 [2025-04-26 16:24:49,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:49,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:49,185 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 [2025-04-26 16:24:49,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:49,188 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) [2025-04-26 16:24:49,190 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 [2025-04-26 16:24:49,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:49,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:49,263 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:49,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:49,268 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:49,269 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:49,269 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:49,270 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:49,270 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:49,270 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,270 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:49,270 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:49,270 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:24:49,270 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:49,270 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:49,271 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:49,293 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:49,293 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:49,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:49,296 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) [2025-04-26 16:24:49,298 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 [2025-04-26 16:24:49,298 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 [2025-04-26 16:24:49,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:49,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:49,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:49,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:49,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:49,310 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:49,310 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:49,314 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:49,317 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:49,317 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:24:49,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:49,319 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) [2025-04-26 16:24:49,321 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 [2025-04-26 16:24:49,322 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:49,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:49,325 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:49,325 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:49,325 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-04-26 16:24:49,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-04-26 16:24:49,332 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:49,349 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:49,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:24:49,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:24:49,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:49,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:49,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:49,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:49,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:49,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:49,368 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:49,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:49,384 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 [2025-04-26 16:24:49,384 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11886 states and 57485 transitions. cyclomatic complexity: 48615 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:50,043 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11886 states and 57485 transitions. cyclomatic complexity: 48615. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 42933 states and 210258 transitions. Complement of second has 7 states. [2025-04-26 16:24:50,043 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2025-04-26 16:24:50,045 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:24:50,045 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:50,045 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:24:50,045 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:50,045 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:24:50,045 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:50,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42933 states and 210258 transitions. [2025-04-26 16:24:50,857 INFO L131 ngComponentsAnalysis]: Automaton has 1973 accepting balls. 4726 [2025-04-26 16:24:51,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42933 states to 31253 states and 155588 transitions. [2025-04-26 16:24:51,252 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8996 [2025-04-26 16:24:51,295 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12512 [2025-04-26 16:24:51,296 INFO L74 IsDeterministic]: Start isDeterministic. Operand 31253 states and 155588 transitions. [2025-04-26 16:24:51,296 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:51,296 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31253 states and 155588 transitions. [2025-04-26 16:24:51,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31253 states and 155588 transitions. [2025-04-26 16:24:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31253 to 27739. [2025-04-26 16:24:52,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27739 states, 27739 states have (on average 5.096146220123292) internal successors, (in total 141362), 27738 states have internal predecessors, (141362), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27739 states to 27739 states and 141362 transitions. [2025-04-26 16:24:52,371 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27739 states and 141362 transitions. [2025-04-26 16:24:52,371 INFO L438 stractBuchiCegarLoop]: Abstraction has 27739 states and 141362 transitions. [2025-04-26 16:24:52,371 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:24:52,371 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27739 states and 141362 transitions. [2025-04-26 16:24:52,822 INFO L131 ngComponentsAnalysis]: Automaton has 1973 accepting balls. 4726 [2025-04-26 16:24:52,823 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:52,823 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:52,824 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:24:52,824 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:52,824 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[164] L14-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 16:24:52,824 INFO L754 eck$LassoCheckResult]: Loop: "[139] L56-->L58: Formula: (< v_x4_5 v_z_9) InVars {x4=v_x4_5, z=v_z_9} OutVars{x4=v_x4_5, z=v_z_9} AuxVars[] AssignedVars[]" "[141] L58-->L56: Formula: (= v_x4_6 (+ v_x4_7 1)) InVars {x4=v_x4_7} OutVars{x4=v_x4_6} AuxVars[] AssignedVars[x4]" [2025-04-26 16:24:52,825 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash 4417106, now seen corresponding path program 1 times [2025-04-26 16:24:52,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:52,825 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894644288] [2025-04-26 16:24:52,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:52,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:52,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:52,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:52,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,829 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:52,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:52,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:52,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:52,832 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:52,833 INFO L85 PathProgramCache]: Analyzing trace with hash 5411, now seen corresponding path program 1 times [2025-04-26 16:24:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:52,833 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398567061] [2025-04-26 16:24:52,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:52,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:52,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:52,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:52,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,835 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:52,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:52,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:52,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:52,837 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash -50123980, now seen corresponding path program 1 times [2025-04-26 16:24:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:52,838 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937418392] [2025-04-26 16:24:52,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:52,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:52,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:52,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,841 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:52,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:24:52,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:24:52,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:52,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:52,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:52,861 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:52,861 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:52,861 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:52,861 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:52,861 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:52,861 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,861 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:52,861 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:52,861 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:52,861 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:52,861 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:52,862 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:52,876 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:52,877 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:52,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:52,880 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) [2025-04-26 16:24:52,881 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 [2025-04-26 16:24:52,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:52,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:52,900 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 [2025-04-26 16:24:52,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:52,902 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) [2025-04-26 16:24:52,903 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 [2025-04-26 16:24:52,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:52,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:52,970 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:52,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:52,975 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:52,975 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:52,975 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:52,975 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:52,975 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:52,975 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,975 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:52,975 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:52,975 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:24:52,975 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:52,975 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:52,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:52,994 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:52,994 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:52,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:52,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:52,996 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) [2025-04-26 16:24:52,997 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 [2025-04-26 16:24:52,998 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 [2025-04-26 16:24:53,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:53,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:53,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:53,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:53,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:53,009 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:53,009 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:53,011 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:53,015 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:24:53,015 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:53,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:53,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:53,017 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) [2025-04-26 16:24:53,019 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 [2025-04-26 16:24:53,020 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:53,023 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 [2025-04-26 16:24:53,023 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:53,023 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:53,023 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x4, z) = -1*x4 + 1*z Supporting invariants [] [2025-04-26 16:24:53,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-04-26 16:24:53,033 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:53,045 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:53,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:53,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:53,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:53,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:53,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:53,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:53,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:53,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:53,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:53,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:53,062 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:53,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:24:53,074 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 [2025-04-26 16:24:53,074 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27739 states and 141362 transitions. cyclomatic complexity: 119513 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:54,322 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27739 states and 141362 transitions. cyclomatic complexity: 119513. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 101343 states and 519149 transitions. Complement of second has 7 states. [2025-04-26 16:24:54,322 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:24:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (in total 6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-04-26 16:24:54,324 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:54,324 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:54,324 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 6 letters. Loop has 2 letters. [2025-04-26 16:24:54,324 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:54,324 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 4 letters. Loop has 4 letters. [2025-04-26 16:24:54,324 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:54,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101343 states and 519149 transitions. [2025-04-26 16:24:56,546 INFO L131 ngComponentsAnalysis]: Automaton has 1449 accepting balls. 3086 [2025-04-26 16:24:57,441 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101343 states to 65163 states and 337875 transitions. [2025-04-26 16:24:57,442 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14459 [2025-04-26 16:24:57,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17791 [2025-04-26 16:24:57,487 INFO L74 IsDeterministic]: Start isDeterministic. Operand 65163 states and 337875 transitions. [2025-04-26 16:24:57,487 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:57,487 INFO L218 hiAutomatonCegarLoop]: Abstraction has 65163 states and 337875 transitions. [2025-04-26 16:24:57,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65163 states and 337875 transitions. [2025-04-26 16:24:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65163 to 59395. [2025-04-26 16:24:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59395 states, 59395 states have (on average 5.290361141510228) internal successors, (in total 314221), 59394 states have internal predecessors, (314221), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:24:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59395 states to 59395 states and 314221 transitions. [2025-04-26 16:24:59,719 INFO L240 hiAutomatonCegarLoop]: Abstraction has 59395 states and 314221 transitions. [2025-04-26 16:24:59,719 INFO L438 stractBuchiCegarLoop]: Abstraction has 59395 states and 314221 transitions. [2025-04-26 16:24:59,719 INFO L340 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-04-26 16:24:59,719 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59395 states and 314221 transitions. [2025-04-26 16:25:00,311 INFO L131 ngComponentsAnalysis]: Automaton has 1449 accepting balls. 3086 [2025-04-26 16:25:00,312 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:00,312 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:00,313 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:25:00,313 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:00,313 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[164] L14-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[167] L15-->L71: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-04-26 16:25:00,313 INFO L754 eck$LassoCheckResult]: Loop: "[148] L71-->L73: Formula: (< v_x5_5 v_z_15) InVars {x5=v_x5_5, z=v_z_15} OutVars{x5=v_x5_5, z=v_z_15} AuxVars[] AssignedVars[]" "[150] L73-->L71: Formula: (= v_x5_6 (+ v_x5_7 1)) InVars {x5=v_x5_7} OutVars{x5=v_x5_6} AuxVars[] AssignedVars[x5]" [2025-04-26 16:25:00,314 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash 136930453, now seen corresponding path program 1 times [2025-04-26 16:25:00,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:00,314 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28383654] [2025-04-26 16:25:00,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:00,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:00,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:00,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:00,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:00,317 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:00,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:00,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:00,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:00,324 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:00,324 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:00,324 INFO L85 PathProgramCache]: Analyzing trace with hash 5699, now seen corresponding path program 1 times [2025-04-26 16:25:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:00,324 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260541229] [2025-04-26 16:25:00,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:00,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:00,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:00,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:00,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:00,327 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:00,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:00,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:00,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:00,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:00,328 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:00,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1553816105, now seen corresponding path program 1 times [2025-04-26 16:25:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:00,329 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582669156] [2025-04-26 16:25:00,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:00,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:00,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:25:00,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:25:00,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:00,332 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:00,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-26 16:25:00,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-26 16:25:00,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:00,335 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:00,351 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:00,352 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:00,352 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:00,352 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:00,352 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:00,352 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:00,352 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:00,352 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:00,352 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:25:00,352 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:00,352 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:00,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:00,367 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:00,367 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:00,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:00,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:00,369 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) [2025-04-26 16:25:00,371 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 [2025-04-26 16:25:00,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:00,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:00,387 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 [2025-04-26 16:25:00,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:00,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:00,389 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) [2025-04-26 16:25:00,390 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 [2025-04-26 16:25:00,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:00,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:00,450 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:00,454 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 [2025-04-26 16:25:00,454 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:00,454 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:00,454 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:00,454 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:00,454 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:00,455 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:00,455 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:00,455 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:00,455 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration4_Loop [2025-04-26 16:25:00,455 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:00,455 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:00,455 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:00,470 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:00,470 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:00,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:00,472 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) [2025-04-26 16:25:00,473 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 [2025-04-26 16:25:00,474 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 [2025-04-26 16:25:00,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:00,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:00,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:00,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:00,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:00,485 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:00,485 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:00,487 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:00,489 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:00,489 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:00,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:00,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:00,491 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) [2025-04-26 16:25:00,492 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 [2025-04-26 16:25:00,493 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:00,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-04-26 16:25:00,496 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:00,496 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:00,496 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x5, z) = -1*x5 + 1*z Supporting invariants [] [2025-04-26 16:25:00,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:00,502 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:00,513 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:00,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:00,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:00,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:00,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:00,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:00,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:00,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:00,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:00,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:00,526 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:00,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:00,537 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 [2025-04-26 16:25:00,537 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 59395 states and 314221 transitions. cyclomatic complexity: 265054 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:03,109 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 59395 states and 314221 transitions. cyclomatic complexity: 265054. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 195122 states and 1023917 transitions. Complement of second has 7 states. [2025-04-26 16:25:03,110 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2025-04-26 16:25:03,111 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:25:03,111 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:03,111 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 16:25:03,111 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:03,111 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 16:25:03,111 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:03,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195122 states and 1023917 transitions. [2025-04-26 16:25:06,648 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 186 [2025-04-26 16:25:06,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195122 states to 3816 states and 15176 transitions. [2025-04-26 16:25:06,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1151 [2025-04-26 16:25:06,675 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1151 [2025-04-26 16:25:06,676 INFO L74 IsDeterministic]: Start isDeterministic. Operand 3816 states and 15176 transitions. [2025-04-26 16:25:06,676 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:06,676 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-04-26 16:25:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states and 15176 transitions. [2025-04-26 16:25:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3816. [2025-04-26 16:25:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3816 states have (on average 3.9769392033542976) internal successors, (in total 15176), 3815 states have internal predecessors, (15176), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 15176 transitions. [2025-04-26 16:25:06,719 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-04-26 16:25:06,720 INFO L438 stractBuchiCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-04-26 16:25:06,720 INFO L340 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-04-26 16:25:06,720 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3816 states and 15176 transitions. [2025-04-26 16:25:06,734 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 186 [2025-04-26 16:25:06,735 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:06,735 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:06,735 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-04-26 16:25:06,735 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:06,735 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[124] L31-->L32-1: Formula: (<= 4 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-04-26 16:25:06,735 INFO L754 eck$LassoCheckResult]: Loop: "[126] L32-1-->L34: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[128] L34-->L32-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-04-26 16:25:06,736 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 136889707, now seen corresponding path program 1 times [2025-04-26 16:25:06,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:06,736 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110050903] [2025-04-26 16:25:06,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:06,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:06,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:06,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:06,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:06,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:06,780 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110050903] [2025-04-26 16:25:06,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110050903] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:06,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:06,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-26 16:25:06,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855524968] [2025-04-26 16:25:06,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:06,785 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:25:06,785 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash 4995, now seen corresponding path program 1 times [2025-04-26 16:25:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:06,785 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263425127] [2025-04-26 16:25:06,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:06,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:06,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:06,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:06,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:06,789 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:06,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:06,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:06,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:06,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:06,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:06,802 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:06,802 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:06,802 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:06,802 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:06,802 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:06,802 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:06,802 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:06,802 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:06,802 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:25:06,802 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:06,802 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:06,803 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:06,817 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:06,817 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:06,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:06,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:06,819 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) [2025-04-26 16:25:06,821 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 [2025-04-26 16:25:06,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:06,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:06,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:06,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:06,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:06,842 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) [2025-04-26 16:25:06,844 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 [2025-04-26 16:25:06,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:06,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:06,914 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:06,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:06,918 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:06,918 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:06,918 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:06,918 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:06,918 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:06,918 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:06,919 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:06,919 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:06,919 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration5_Loop [2025-04-26 16:25:06,919 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:06,919 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:06,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:06,938 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:06,938 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:06,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:06,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:06,940 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) [2025-04-26 16:25:06,942 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 [2025-04-26 16:25:06,943 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 [2025-04-26 16:25:06,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:06,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:06,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:06,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:06,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:06,955 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:06,955 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:06,957 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:06,958 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:25:06,958 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:25:06,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:06,960 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) [2025-04-26 16:25:06,962 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 [2025-04-26 16:25:06,963 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:06,965 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:25:06,966 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 [2025-04-26 16:25:06,967 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:06,967 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:06,967 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-04-26 16:25:06,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:06,972 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:06,986 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:06,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:06,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:06,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:06,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:06,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:06,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:07,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,004 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:07,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:07,211 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 [2025-04-26 16:25:07,211 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3816 states and 15176 transitions. cyclomatic complexity: 12010 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,321 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3816 states and 15176 transitions. cyclomatic complexity: 12010. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 8572 states and 35258 transitions. Complement of second has 7 states. [2025-04-26 16:25:07,321 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (in total 7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-04-26 16:25:07,323 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:25:07,323 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:07,323 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 7 letters. Loop has 2 letters. [2025-04-26 16:25:07,323 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:07,323 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 5 letters. Loop has 4 letters. [2025-04-26 16:25:07,323 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:07,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8572 states and 35258 transitions. [2025-04-26 16:25:07,387 INFO L131 ngComponentsAnalysis]: Automaton has 94 accepting balls. 188 [2025-04-26 16:25:07,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8572 states to 5167 states and 20286 transitions. [2025-04-26 16:25:07,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1218 [2025-04-26 16:25:07,420 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1443 [2025-04-26 16:25:07,420 INFO L74 IsDeterministic]: Start isDeterministic. Operand 5167 states and 20286 transitions. [2025-04-26 16:25:07,420 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:07,420 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5167 states and 20286 transitions. [2025-04-26 16:25:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states and 20286 transitions. [2025-04-26 16:25:07,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 3941. [2025-04-26 16:25:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3941 states have (on average 3.9662522202486676) internal successors, (in total 15631), 3940 states have internal predecessors, (15631), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 15631 transitions. [2025-04-26 16:25:07,484 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3941 states and 15631 transitions. [2025-04-26 16:25:07,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:07,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-26 16:25:07,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-26 16:25:07,489 INFO L87 Difference]: Start difference. First operand 3941 states and 15631 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (in total 5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:07,536 INFO L93 Difference]: Finished difference Result 2462 states and 9380 transitions. [2025-04-26 16:25:07,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2462 states and 9380 transitions. [2025-04-26 16:25:07,551 INFO L131 ngComponentsAnalysis]: Automaton has 75 accepting balls. 150 [2025-04-26 16:25:07,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2462 states to 2452 states and 9330 transitions. [2025-04-26 16:25:07,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 743 [2025-04-26 16:25:07,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 743 [2025-04-26 16:25:07,563 INFO L74 IsDeterministic]: Start isDeterministic. Operand 2452 states and 9330 transitions. [2025-04-26 16:25:07,564 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:07,564 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-04-26 16:25:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states and 9330 transitions. [2025-04-26 16:25:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2452. [2025-04-26 16:25:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2452 states have (on average 3.805057096247961) internal successors, (in total 9330), 2451 states have internal predecessors, (9330), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 9330 transitions. [2025-04-26 16:25:07,596 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-04-26 16:25:07,597 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-26 16:25:07,598 INFO L438 stractBuchiCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-04-26 16:25:07,598 INFO L340 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-04-26 16:25:07,598 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2452 states and 9330 transitions. [2025-04-26 16:25:07,607 INFO L131 ngComponentsAnalysis]: Automaton has 75 accepting balls. 150 [2025-04-26 16:25:07,608 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:07,608 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:07,608 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:25:07,608 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:07,609 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[129] L41-->L45: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[131] L45-->L46: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[133] L46-->L47-1: Formula: (<= 4 v_x2_6) InVars {x2=v_x2_6} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[]" [2025-04-26 16:25:07,609 INFO L754 eck$LassoCheckResult]: Loop: "[135] L47-1-->L49: 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[]" "[137] L49-->L47-1: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-04-26 16:25:07,609 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash -957082353, now seen corresponding path program 1 times [2025-04-26 16:25:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:07,609 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342437985] [2025-04-26 16:25:07,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:07,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:07,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:25:07,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:25:07,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:07,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:07,645 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342437985] [2025-04-26 16:25:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342437985] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:07,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:07,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-26 16:25:07,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33932928] [2025-04-26 16:25:07,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:07,645 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:25:07,645 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash 5283, now seen corresponding path program 1 times [2025-04-26 16:25:07,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:07,647 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233288244] [2025-04-26 16:25:07,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:07,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:07,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:07,650 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:07,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:07,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:07,670 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:07,671 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:07,671 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:07,671 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:07,671 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:07,671 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,671 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:07,671 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:07,671 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration6_Loop [2025-04-26 16:25:07,671 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:07,671 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:07,671 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:07,686 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:07,687 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:07,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,689 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) [2025-04-26 16:25:07,689 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 [2025-04-26 16:25:07,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:07,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:07,706 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 [2025-04-26 16:25:07,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,708 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) [2025-04-26 16:25:07,709 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 [2025-04-26 16:25:07,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:07,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:07,778 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:07,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:07,781 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:07,782 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:07,782 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:07,782 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:07,782 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:07,782 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,782 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:07,782 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:07,782 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration6_Loop [2025-04-26 16:25:07,782 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:07,782 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:07,783 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:07,797 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:07,797 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:07,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,800 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) [2025-04-26 16:25:07,801 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 [2025-04-26 16:25:07,802 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 [2025-04-26 16:25:07,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:07,812 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:07,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:07,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:07,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:07,813 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:07,813 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:07,818 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:07,822 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:07,822 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:07,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:07,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:07,824 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) [2025-04-26 16:25:07,826 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 [2025-04-26 16:25:07,827 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:07,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-04-26 16:25:07,830 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:07,830 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:07,830 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x4, z) = -1*x4 + 1*z Supporting invariants [] [2025-04-26 16:25:07,836 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 [2025-04-26 16:25:07,836 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:07,846 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:07,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-26 16:25:07,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-26 16:25:07,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:07,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:07,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:07,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:07,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:07,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:07,868 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:07,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:07,884 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 [2025-04-26 16:25:07,884 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2452 states and 9330 transitions. cyclomatic complexity: 7323 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (in total 10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,955 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2452 states and 9330 transitions. cyclomatic complexity: 7323. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (in total 10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 4978 states and 19892 transitions. Complement of second has 7 states. [2025-04-26 16:25:07,956 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (in total 10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2025-04-26 16:25:07,956 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 8 letters. Loop has 2 letters. [2025-04-26 16:25:07,956 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:07,956 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 10 letters. Loop has 2 letters. [2025-04-26 16:25:07,956 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:07,957 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 8 letters. Loop has 4 letters. [2025-04-26 16:25:07,957 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:07,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4978 states and 19892 transitions. [2025-04-26 16:25:07,989 INFO L131 ngComponentsAnalysis]: Automaton has 70 accepting balls. 140 [2025-04-26 16:25:08,008 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4978 states to 3235 states and 12053 transitions. [2025-04-26 16:25:08,008 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 806 [2025-04-26 16:25:08,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 975 [2025-04-26 16:25:08,010 INFO L74 IsDeterministic]: Start isDeterministic. Operand 3235 states and 12053 transitions. [2025-04-26 16:25:08,010 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:08,010 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3235 states and 12053 transitions. [2025-04-26 16:25:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states and 12053 transitions. [2025-04-26 16:25:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2535. [2025-04-26 16:25:08,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 2535 states have (on average 3.7956607495069035) internal successors, (in total 9622), 2534 states have internal predecessors, (9622), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 9622 transitions. [2025-04-26 16:25:08,053 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2535 states and 9622 transitions. [2025-04-26 16:25:08,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:08,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-26 16:25:08,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-26 16:25:08,054 INFO L87 Difference]: Start difference. First operand 2535 states and 9622 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (in total 8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:08,088 INFO L93 Difference]: Finished difference Result 1051 states and 3900 transitions. [2025-04-26 16:25:08,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1051 states and 3900 transitions. [2025-04-26 16:25:08,094 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 50 [2025-04-26 16:25:08,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1051 states to 901 states and 3289 transitions. [2025-04-26 16:25:08,098 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2025-04-26 16:25:08,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2025-04-26 16:25:08,098 INFO L74 IsDeterministic]: Start isDeterministic. Operand 901 states and 3289 transitions. [2025-04-26 16:25:08,098 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:08,098 INFO L218 hiAutomatonCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-04-26 16:25:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states and 3289 transitions. [2025-04-26 16:25:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2025-04-26 16:25:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 901 states have (on average 3.6503884572697003) internal successors, (in total 3289), 900 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 3289 transitions. [2025-04-26 16:25:08,109 INFO L240 hiAutomatonCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-04-26 16:25:08,110 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-26 16:25:08,110 INFO L438 stractBuchiCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-04-26 16:25:08,110 INFO L340 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-04-26 16:25:08,110 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 901 states and 3289 transitions. [2025-04-26 16:25:08,114 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 50 [2025-04-26 16:25:08,114 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:08,114 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:08,115 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-26 16:25:08,115 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:08,115 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: 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]" "[129] L41-->L45: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[131] L45-->L46: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[164] L14-->L56: 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]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[138] L56-->L60: Formula: (<= v_z_10 v_x4_8) InVars {x4=v_x4_8, z=v_z_10} OutVars{x4=v_x4_8, z=v_z_10} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[140] L60-->L61: Formula: (= v_x2_7 (+ v_x2_8 1)) InVars {x2=v_x2_8} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[142] L61-->L62-1: Formula: (<= 4 v_x2_9) InVars {x2=v_x2_9} OutVars{x2=v_x2_9} AuxVars[] AssignedVars[]" [2025-04-26 16:25:08,115 INFO L754 eck$LassoCheckResult]: Loop: "[144] L62-1-->L64: Formula: (< v_x5_1 v_z_11) InVars {x5=v_x5_1, z=v_z_11} OutVars{x5=v_x5_1, z=v_z_11} AuxVars[] AssignedVars[]" "[146] L64-->L62-1: Formula: (= v_x5_2 (+ v_x5_3 1)) InVars {x5=v_x5_3} OutVars{x5=v_x5_2} AuxVars[] AssignedVars[x5]" [2025-04-26 16:25:08,115 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:08,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1189361094, now seen corresponding path program 1 times [2025-04-26 16:25:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:08,116 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287666434] [2025-04-26 16:25:08,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:08,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:08,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 16:25:08,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 16:25:08,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:08,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-26 16:25:08,238 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287666434] [2025-04-26 16:25:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287666434] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-26 16:25:08,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-26 16:25:08,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-26 16:25:08,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940037775] [2025-04-26 16:25:08,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-26 16:25:08,238 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-04-26 16:25:08,239 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:08,239 INFO L85 PathProgramCache]: Analyzing trace with hash 5571, now seen corresponding path program 1 times [2025-04-26 16:25:08,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:08,239 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491615502] [2025-04-26 16:25:08,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:08,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:08,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:08,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:08,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:08,242 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:08,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:08,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:08,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:08,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:08,255 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:08,255 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:08,255 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:08,255 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:08,256 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:08,256 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,256 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:08,256 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:08,256 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration7_Loop [2025-04-26 16:25:08,256 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:08,256 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:08,256 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:08,271 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:08,271 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:08,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:08,273 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) [2025-04-26 16:25:08,273 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 [2025-04-26 16:25:08,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:08,275 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:08,289 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 [2025-04-26 16:25:08,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:08,291 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) [2025-04-26 16:25:08,291 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 [2025-04-26 16:25:08,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:08,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:08,350 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:08,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-04-26 16:25:08,353 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:08,354 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:08,354 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:08,354 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:08,354 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:08,354 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,354 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:08,354 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:08,354 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration7_Loop [2025-04-26 16:25:08,354 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:08,354 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:08,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:08,365 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:08,366 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:08,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:08,367 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) [2025-04-26 16:25:08,369 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 [2025-04-26 16:25:08,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-04-26 16:25:08,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:08,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:08,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:08,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:08,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:08,381 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:08,381 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:08,383 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:08,385 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:25:08,385 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:08,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:08,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:08,387 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2025-04-26 16:25:08,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-04-26 16:25:08,389 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:08,392 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:25:08,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:08,392 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:08,392 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:08,392 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x5) = 1*z - 1*x5 Supporting invariants [] [2025-04-26 16:25:08,397 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 [2025-04-26 16:25:08,398 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:08,409 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:08,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-26 16:25:08,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-26 16:25:08,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:08,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:08,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:08,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:08,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:08,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:08,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:08,437 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:08,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-26 16:25:08,447 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 [2025-04-26 16:25:08,447 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 901 states and 3289 transitions. cyclomatic complexity: 2551 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (in total 13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,476 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 901 states and 3289 transitions. cyclomatic complexity: 2551. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (in total 13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) Result 1356 states and 4915 transitions. Complement of second has 6 states. [2025-04-26 16:25:08,476 INFO L140 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-04-26 16:25:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (in total 13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2025-04-26 16:25:08,477 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 11 letters. Loop has 2 letters. [2025-04-26 16:25:08,477 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:08,477 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 13 letters. Loop has 2 letters. [2025-04-26 16:25:08,477 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:08,477 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 11 letters. Loop has 4 letters. [2025-04-26 16:25:08,477 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:08,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1356 states and 4915 transitions. [2025-04-26 16:25:08,483 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:25:08,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1356 states to 0 states and 0 transitions. [2025-04-26 16:25:08,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:25:08,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:25:08,483 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:25:08,483 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:25:08,483 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,483 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-26 16:25:08,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-26 16:25:08,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-04-26 16:25:08,484 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (in total 11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (in total 0), 0 states have return successors, (0), 0 states have call predecessors, ( in total0), 0 states have call successors, (0) [2025-04-26 16:25:08,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-26 16:25:08,484 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-04-26 16:25:08,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-04-26 16:25:08,484 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:25:08,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-04-26 16:25:08,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-04-26 16:25:08,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-04-26 16:25:08,484 INFO L74 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-04-26 16:25:08,484 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-04-26 16:25:08,484 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,484 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,484 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-26 16:25:08,484 INFO L438 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-26 16:25:08,485 INFO L340 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2025-04-26 16:25:08,485 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-04-26 16:25:08,485 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-04-26 16:25:08,485 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-04-26 16:25:08,489 INFO L201 PluginConnector]: Adding new model bb7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.04 04:25:08 BoogieIcfgContainer [2025-04-26 16:25:08,490 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-04-26 16:25:08,490 INFO L158 Benchmark]: Toolchain (without parser) took 23059.83ms. Allocated memory was 155.2MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 82.8MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2025-04-26 16:25:08,490 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:25:08,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.72ms. Allocated memory is still 155.2MB. Free memory was 82.8MB in the beginning and 80.9MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-26 16:25:08,490 INFO L158 Benchmark]: Boogie Preprocessor took 23.93ms. Allocated memory is still 155.2MB. Free memory was 80.9MB in the beginning and 79.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-26 16:25:08,491 INFO L158 Benchmark]: RCFGBuilder took 195.87ms. Allocated memory is still 155.2MB. Free memory was 79.9MB in the beginning and 69.8MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-26 16:25:08,491 INFO L158 Benchmark]: BuchiAutomizer took 22802.76ms. Allocated memory was 155.2MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 69.6MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2025-04-26 16:25:08,492 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.72ms. Allocated memory is still 155.2MB. Free memory was 82.8MB in the beginning and 80.9MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.93ms. Allocated memory is still 155.2MB. Free memory was 80.9MB in the beginning and 79.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 195.87ms. Allocated memory is still 155.2MB. Free memory was 79.9MB in the beginning and 69.8MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 22802.76ms. Allocated memory was 155.2MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 69.6MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 22.7s and 8 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.3s. Büchi inclusion checks took 5.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 8. Automata minimization 4.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 14322 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 8.9s Buchi closure took 0.1s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 592 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 585 mSDsluCounter, 721 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 356 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 597 IncrementalHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 365 mSDtfsCounter, 597 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 48ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (3 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x5 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x5 + z and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-04-26 16:25:08,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...