/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/barrier-5t.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:24:44,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:24:44,302 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:24:44,311 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:24:44,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:24:44,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:24:44,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:24:44,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:24:44,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:24:44,329 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:24:44,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:24:44,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:24:44,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:24:44,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:24:44,330 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:24:44,330 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:24:44,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:24:44,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:24:44,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:24:44,580 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-04-26 16:24:44,581 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-04-26 16:24:44,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/barrier-5t.c.bpl [2025-04-26 16:24:44,584 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/barrier-5t.c.bpl' [2025-04-26 16:24:44,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:24:44,604 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-04-26 16:24:44,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:44,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:24:44,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:24:44,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,639 INFO L138 Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-04-26 16:24:44,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:24:44,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:24:44,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:24:44,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:24:44,645 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,655 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:24:44,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:24:44,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:24:44,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:24:44,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/1) ... [2025-04-26 16:24:44,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:44,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:44,691 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 16:24:44,693 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 16:24:44,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-04-26 16:24:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-26 16:24:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-26 16:24:44,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-04-26 16:24:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-26 16:24:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-26 16:24:44,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-04-26 16:24:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-26 16:24:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-26 16:24:44,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-04-26 16:24:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:24:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:24:44,716 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-04-26 16:24:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-26 16:24:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-26 16:24:44,717 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2025-04-26 16:24:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-04-26 16:24:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-04-26 16:24:44,718 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 16:24:44,754 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:24:44,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:24:44,883 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:24:44,884 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:24:44,893 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:24:44,894 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-26 16:24:44,894 INFO L201 PluginConnector]: Adding new model barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:44 BoogieIcfgContainer [2025-04-26 16:24:44,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:24:44,895 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:24:44,895 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:24:44,899 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:24:44,899 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:44,899 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.04 04:24:44" (1/2) ... [2025-04-26 16:24:44,900 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6cf5df9c and model type barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:24:44, skipping insertion in model container [2025-04-26 16:24:44,900 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:24:44,900 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-5t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:24:44" (2/2) ... [2025-04-26 16:24:44,901 INFO L376 chiAutomizerObserver]: Analyzing ICFG barrier-5t.c.bpl [2025-04-26 16:24:44,966 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-04-26 16:24:44,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 169 flow [2025-04-26 16:24:45,022 INFO L116 PetriNetUnfolderBase]: 10/57 cut-off events. [2025-04-26 16:24:45,024 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-26 16:24:45,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 57 events. 10/57 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2025-04-26 16:24:45,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 169 flow [2025-04-26 16:24:45,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 57 transitions, 144 flow [2025-04-26 16:24:45,031 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 63 places, 57 transitions, 144 flow [2025-04-26 16:24:45,039 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:24:45,039 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:24:45,039 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:24:45,040 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:24:45,040 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:24:45,040 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:24:45,040 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:24:45,040 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:24:45,041 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:24:47,911 INFO L131 ngComponentsAnalysis]: Automaton has 9180 accepting balls. 40424 [2025-04-26 16:24:47,911 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:47,911 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:47,918 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:47,919 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:47,919 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:24:47,919 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 42131 states, but on-demand construction may add more states [2025-04-26 16:24:49,015 INFO L131 ngComponentsAnalysis]: Automaton has 9180 accepting balls. 40424 [2025-04-26 16:24:49,016 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:24:49,016 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:24:49,019 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-04-26 16:24:49,020 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:24:49,024 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-04-26 16:24:49,024 INFO L754 eck$LassoCheckResult]: Loop: "[150] L28-->L30: 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[]" "[152] L30-->L28: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-04-26 16:24:49,028 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash 4908, now seen corresponding path program 1 times [2025-04-26 16:24:49,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:49,034 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010188106] [2025-04-26 16:24:49,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:49,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:49,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:49,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:49,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,084 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:49,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:49,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:49,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:49,104 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash 5763, now seen corresponding path program 1 times [2025-04-26 16:24:49,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:49,105 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287175184] [2025-04-26 16:24:49,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:49,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:49,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 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 2 of 2 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 16:24:49,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 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 2 of 2 statements. [2025-04-26 16:24:49,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,117 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 16:24:49,120 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:49,120 INFO L85 PathProgramCache]: Analyzing trace with hash 4721390, now seen corresponding path program 1 times [2025-04-26 16:24:49,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:24:49,121 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105824341] [2025-04-26 16:24:49,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:24:49,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:24:49,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:49,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:49,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,129 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:24:49,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:24:49,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:24:49,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:24:49,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:24:49,185 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:49,186 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:49,186 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:49,187 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:49,187 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:24:49,187 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,187 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:49,187 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:49,187 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:49,187 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:49,187 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:49,196 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:49,234 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:49,234 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:24:49,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:49,238 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 16:24:49,240 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 16:24:49,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:24:49,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:49,265 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 16:24:49,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:49,267 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 16:24:49,268 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 16:24:49,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:24:49,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:24:49,340 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:24:49,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-04-26 16:24:49,346 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:24:49,346 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:24:49,346 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:24:49,346 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:24:49,346 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:24:49,346 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,346 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:24:49,346 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:24:49,346 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration1_Loop [2025-04-26 16:24:49,346 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:24:49,346 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:24:49,347 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:24:49,377 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:24:49,380 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:24:49,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:49,382 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 16:24:49,383 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 16:24:49,384 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 16:24:49,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:24:49,395 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:24:49,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:24:49,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:24:49,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:24:49,401 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:24:49,401 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:24:49,404 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:24:49,408 INFO L436 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-04-26 16:24:49,409 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:24:49,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:24:49,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:24:49,412 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 16:24:49,414 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 16:24:49,415 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:24:49,417 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:24:49,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-04-26 16:24:49,419 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:24:49,419 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:24:49,420 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-04-26 16:24:49,429 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 16:24:49,432 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:24:49,459 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:24:49,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:49,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:49,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:49,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:24:49,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:49,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:24:49,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:24:49,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:24:49,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:24:49,551 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:24:49,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:24:49,573 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 16:24:49,614 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 16:24:49,619 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 42131 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 16:24:52,634 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 42131 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 146722 states and 859784 transitions. Complement of second has 7 states. [2025-04-26 16:24:52,635 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 16:24:52,638 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 16:24:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2025-04-26 16:24:52,643 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 2 letters. Loop has 2 letters. [2025-04-26 16:24:52,644 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:52,644 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 4 letters. Loop has 2 letters. [2025-04-26 16:24:52,644 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:52,644 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 2 letters. Loop has 4 letters. [2025-04-26 16:24:52,644 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:24:52,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146722 states and 859784 transitions. [2025-04-26 16:24:55,849 INFO L131 ngComponentsAnalysis]: Automaton has 12492 accepting balls. 43912 [2025-04-26 16:24:58,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146722 states to 122040 states and 721161 transitions. [2025-04-26 16:24:58,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47560 [2025-04-26 16:24:58,699 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72936 [2025-04-26 16:24:58,700 INFO L74 IsDeterministic]: Start isDeterministic. Operand 122040 states and 721161 transitions. [2025-04-26 16:24:58,700 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:24:58,700 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122040 states and 721161 transitions. [2025-04-26 16:24:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122040 states and 721161 transitions. [2025-04-26 16:25:02,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122040 to 96666. [2025-04-26 16:25:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96666 states, 96666 states have (on average 6.054217615293899) internal successors, (in total 585237), 96665 states have internal predecessors, (585237), 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 16:25:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96666 states to 96666 states and 585237 transitions. [2025-04-26 16:25:04,258 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96666 states and 585237 transitions. [2025-04-26 16:25:04,258 INFO L438 stractBuchiCegarLoop]: Abstraction has 96666 states and 585237 transitions. [2025-04-26 16:25:04,258 INFO L340 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-04-26 16:25:04,258 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96666 states and 585237 transitions. [2025-04-26 16:25:05,314 INFO L131 ngComponentsAnalysis]: Automaton has 12492 accepting balls. 43912 [2025-04-26 16:25:05,314 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:05,314 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:05,322 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-04-26 16:25:05,322 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:05,322 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[199] L13-1-->L43: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-04-26 16:25:05,322 INFO L754 eck$LassoCheckResult]: Loop: "[159] L43-->L45: 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[]" "[161] L45-->L43: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-04-26 16:25:05,323 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash 152347, now seen corresponding path program 1 times [2025-04-26 16:25:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:05,323 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313690062] [2025-04-26 16:25:05,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:05,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:05,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:05,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,327 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:05,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:05,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:05,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:05,330 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:05,330 INFO L85 PathProgramCache]: Analyzing trace with hash 6051, now seen corresponding path program 1 times [2025-04-26 16:25:05,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:05,330 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857908466] [2025-04-26 16:25:05,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:05,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:05,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:05,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:05,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,334 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:05,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:05,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:05,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:05,336 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash 146410557, now seen corresponding path program 1 times [2025-04-26 16:25:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:05,336 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430221525] [2025-04-26 16:25:05,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:05,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:05,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:05,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:05,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,340 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:05,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-26 16:25:05,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-26 16:25:05,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:05,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:05,356 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:05,357 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:05,357 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:05,357 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:05,357 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:05,357 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,357 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:05,357 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:05,357 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:25:05,357 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:05,357 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:05,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:05,373 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:05,373 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:05,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:05,376 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 16:25:05,378 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 16:25:05,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:05,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:05,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-04-26 16:25:05,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:05,401 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 16:25:05,402 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 16:25:05,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:05,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:05,469 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:05,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-04-26 16:25:05,474 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:05,474 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:05,474 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:05,474 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:05,474 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:05,474 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,474 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:05,474 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:05,474 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration2_Loop [2025-04-26 16:25:05,474 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:05,474 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:05,475 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:05,494 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:05,494 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:05,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:05,496 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 16:25:05,497 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 16:25:05,498 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 16:25:05,507 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:05,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:05,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:05,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:05,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:05,508 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:05,508 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:05,514 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:05,517 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:25:05,517 INFO L437 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-04-26 16:25:05,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:05,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:05,519 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 16:25:05,521 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 16:25:05,522 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:05,525 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 16:25:05,526 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:05,526 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:05,526 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-04-26 16:25:05,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:05,533 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:05,549 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:05,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-26 16:25:05,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-26 16:25:05,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:05,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:05,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:05,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:05,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:05,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:05,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:05,563 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:05,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:05,577 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 16:25:05,577 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 16:25:05,578 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96666 states and 585237 transitions. cyclomatic complexity: 509487 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 16:25:11,476 INFO L74 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96666 states and 585237 transitions. cyclomatic complexity: 509487. 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 349293 states and 2146739 transitions. Complement of second has 7 states. [2025-04-26 16:25:11,477 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 16:25:11,477 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 16:25:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2025-04-26 16:25:11,477 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 3 letters. Loop has 2 letters. [2025-04-26 16:25:11,478 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:11,478 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 5 letters. Loop has 2 letters. [2025-04-26 16:25:11,478 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:11,478 INFO L85 BuchiAccepts]: Start buchiAccepts Operand 5 states and 209 transitions. Stem has 3 letters. Loop has 4 letters. [2025-04-26 16:25:11,479 INFO L117 BuchiAccepts]: Finished buchiAccepts. [2025-04-26 16:25:11,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 349293 states and 2146739 transitions. [2025-04-26 16:25:21,536 INFO L131 ngComponentsAnalysis]: Automaton has 16097 accepting balls. 46322 [2025-04-26 16:25:26,849 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 349293 states to 261685 states and 1637169 transitions. [2025-04-26 16:25:26,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75376 [2025-04-26 16:25:27,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104936 [2025-04-26 16:25:27,701 INFO L74 IsDeterministic]: Start isDeterministic. Operand 261685 states and 1637169 transitions. [2025-04-26 16:25:27,701 INFO L81 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-04-26 16:25:27,701 INFO L218 hiAutomatonCegarLoop]: Abstraction has 261685 states and 1637169 transitions. [2025-04-26 16:25:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261685 states and 1637169 transitions. [2025-04-26 16:25:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261685 to 232127. [2025-04-26 16:25:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232127 states, 232127 states have (on average 6.395029445088249) internal successors, (in total 1484459), 232126 states have internal predecessors, (1484459), 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 16:25:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232127 states to 232127 states and 1484459 transitions. [2025-04-26 16:25:39,525 INFO L240 hiAutomatonCegarLoop]: Abstraction has 232127 states and 1484459 transitions. [2025-04-26 16:25:39,525 INFO L438 stractBuchiCegarLoop]: Abstraction has 232127 states and 1484459 transitions. [2025-04-26 16:25:39,525 INFO L340 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-04-26 16:25:39,525 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand 232127 states and 1484459 transitions. [2025-04-26 16:25:42,474 INFO L131 ngComponentsAnalysis]: Automaton has 16097 accepting balls. 46322 [2025-04-26 16:25:42,474 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:25:42,474 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:25:42,489 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-04-26 16:25:42,489 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-04-26 16:25:42,490 INFO L752 eck$LassoCheckResult]: Stem: "[121] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[196] L13-->L28: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[199] L13-1-->L43: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[202] L14-->L58: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-04-26 16:25:42,490 INFO L754 eck$LassoCheckResult]: Loop: "[168] L58-->L60: 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[]" "[170] L60-->L58: Formula: (= v_x4_6 (+ v_x4_7 1)) InVars {x4=v_x4_7} OutVars{x4=v_x4_6} AuxVars[] AssignedVars[x4]" [2025-04-26 16:25:42,490 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:42,490 INFO L85 PathProgramCache]: Analyzing trace with hash 4722959, now seen corresponding path program 1 times [2025-04-26 16:25:42,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:42,491 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394328182] [2025-04-26 16:25:42,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:42,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:42,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:42,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:42,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:42,496 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:42,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:42,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:42,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:42,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:42,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:42,501 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash 6339, now seen corresponding path program 1 times [2025-04-26 16:25:42,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:42,502 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142465044] [2025-04-26 16:25:42,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:42,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:42,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:42,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:42,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:42,508 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:42,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:42,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:42,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:42,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:42,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:42,511 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash 243801681, now seen corresponding path program 1 times [2025-04-26 16:25:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-26 16:25:42,512 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636599076] [2025-04-26 16:25:42,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-26 16:25:42,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-26 16:25:42,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:25:42,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:25:42,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:42,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:42,518 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-26 16:25:42,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-26 16:25:42,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-26 16:25:42,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:42,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-26 16:25:42,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-26 16:25:42,538 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:42,538 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:42,538 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:42,538 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:42,538 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-04-26 16:25:42,538 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:42,538 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:42,539 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:42,539 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:25:42,539 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:42,539 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:42,539 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:42,555 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:42,555 INFO L367 LassoAnalysis]: Checking for nontermination... [2025-04-26 16:25:42,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:42,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:42,557 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 16:25:42,559 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 16:25:42,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-04-26 16:25:42,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:42,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-04-26 16:25:42,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:42,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:42,583 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 16:25:42,584 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 16:25:42,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-04-26 16:25:42,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-04-26 16:25:42,658 INFO L407 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-04-26 16:25:42,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-04-26 16:25:42,663 INFO L206 LassoAnalysis]: Preferences: [2025-04-26 16:25:42,663 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-04-26 16:25:42,663 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-04-26 16:25:42,663 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-04-26 16:25:42,663 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-04-26 16:25:42,663 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:42,663 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-04-26 16:25:42,663 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-04-26 16:25:42,663 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-5t.c.bpl_petrified1_Iteration3_Loop [2025-04-26 16:25:42,664 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-04-26 16:25:42,664 INFO L243 LassoAnalysis]: Starting lasso preprocessing... [2025-04-26 16:25:42,664 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-04-26 16:25:42,682 INFO L261 LassoAnalysis]: Preprocessing complete. [2025-04-26 16:25:42,683 INFO L453 LassoAnalysis]: Using template 'affine'. [2025-04-26 16:25:42,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:42,686 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 16:25:42,687 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 16:25:42,689 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 16:25:42,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-04-26 16:25:42,700 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-04-26 16:25:42,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-04-26 16:25:42,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-04-26 16:25:42,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-04-26 16:25:42,702 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-04-26 16:25:42,702 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-04-26 16:25:42,704 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-04-26 16:25:42,708 INFO L436 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-04-26 16:25:42,708 INFO L437 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-04-26 16:25:42,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:25:42,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:25:42,711 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 16:25:42,712 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 16:25:42,713 INFO L436 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-04-26 16:25:42,716 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2025-04-26 16:25:42,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-04-26 16:25:42,718 INFO L439 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-04-26 16:25:42,718 INFO L476 LassoAnalysis]: Proved termination. [2025-04-26 16:25:42,718 INFO L478 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-04-26 16:25:42,724 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 16:25:42,725 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-04-26 16:25:42,740 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-26 16:25:42,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-26 16:25:42,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-26 16:25:42,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:42,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:42,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-04-26 16:25:42,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:42,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-04-26 16:25:42,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-04-26 16:25:42,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-26 16:25:42,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-26 16:25:42,757 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-26 16:25:42,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-26 16:25:42,770 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 16:25:42,771 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 16:25:42,771 INFO L70 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 232127 states and 1484459 transitions. cyclomatic complexity: 1296544 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)