/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 --buchiautomizer.automaton.type.for.concurrent.programs PARTIAL_ORDER_BA -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/3_thr/barrier-3t.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:48:56,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:48:56,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:48:56,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:48:56,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:48:56,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:48:56,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:48:56,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:48:56,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:48:56,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:48:56,507 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:48:56,507 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:48:56,507 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:48:56,507 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:48:56,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:48:56,508 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:48:56,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:48:56,510 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:48:56,511 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:48:56,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:48:56,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:48:56,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:48:56,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:48:56,511 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:48:56,511 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> PARTIAL_ORDER_BA [2025-02-17 22:48:56,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:48:56,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:48:56,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:48:56,840 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:48:56,842 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:48:56,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/barrier-3t.c.bpl [2025-02-17 22:48:56,843 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/barrier-3t.c.bpl' [2025-02-17 22:48:56,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:48:56,854 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:48:56,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:56,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:48:56,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:48:56,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,870 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:48:56,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:56,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:48:56,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:48:56,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:48:56,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,877 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,878 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:48:56,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:48:56,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:48:56,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:48:56,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/1) ... [2025-02-17 22:48:56,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:56,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:56,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:56,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-17 22:48:56,930 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:48:56,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:48:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:48:56,931 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:48:56,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:48:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:48:56,931 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:48:56,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:48:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:48:56,931 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:48:56,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:48:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:48:56,932 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-17 22:48:56,964 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:48:56,966 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:48:57,031 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:48:57,032 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:48:57,039 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:48:57,039 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:48:57,039 INFO L201 PluginConnector]: Adding new model barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:57 BoogieIcfgContainer [2025-02-17 22:48:57,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:48:57,040 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:48:57,040 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:48:57,044 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:48:57,044 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:57,044 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:56" (1/2) ... [2025-02-17 22:48:57,045 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2510d42 and model type barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:48:57, skipping insertion in model container [2025-02-17 22:48:57,045 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:57,046 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:57" (2/2) ... [2025-02-17 22:48:57,046 INFO L363 chiAutomizerObserver]: Analyzing ICFG barrier-3t.c.bpl [2025-02-17 22:48:57,102 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-17 22:48:57,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 41 transitions, 103 flow [2025-02-17 22:48:57,158 INFO L124 PetriNetUnfolderBase]: 6/35 cut-off events. [2025-02-17 22:48:57,160 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-17 22:48:57,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 6/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-17 22:48:57,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 41 transitions, 103 flow [2025-02-17 22:48:57,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 35 transitions, 88 flow [2025-02-17 22:48:57,173 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:48:57,824 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:48:57,824 INFO L101 AmpleReduction]: Number of pruned transitions: 555, Number of non-trivial ample sets: 744 [2025-02-17 22:48:57,824 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 561 [2025-02-17 22:48:57,833 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:48:57,833 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:48:57,833 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:48:57,834 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:48:57,834 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:48:57,834 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:48:57,834 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:48:57,834 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:48:57,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 635 states, 634 states have (on average 2.4321766561514195) internal successors, (1542), 634 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:57,895 INFO L131 ngComponentsAnalysis]: Automaton has 135 accepting balls. 404 [2025-02-17 22:48:57,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:57,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:57,900 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:57,900 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:57,900 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:48:57,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 635 states, 634 states have (on average 2.4321766561514195) internal successors, (1542), 634 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:57,918 INFO L131 ngComponentsAnalysis]: Automaton has 135 accepting balls. 404 [2025-02-17 22:48:57,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:57,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:57,919 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:57,919 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:57,927 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:48:57,927 INFO L754 eck$LassoCheckResult]: Loop: "[92] L24-->L26: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[94] L26-->L24: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:48:57,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:57,931 INFO L85 PathProgramCache]: Analyzing trace with hash 3685, now seen corresponding path program 1 times [2025-02-17 22:48:57,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329327718] [2025-02-17 22:48:57,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:57,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:57,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:57,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:57,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:57,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:57,990 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:57,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:57,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:57,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:57,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:58,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:58,010 INFO L85 PathProgramCache]: Analyzing trace with hash 3907, now seen corresponding path program 1 times [2025-02-17 22:48:58,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:58,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030289906] [2025-02-17 22:48:58,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:58,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:58,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:58,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:58,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,018 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:58,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:58,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:58,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:58,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:58,025 INFO L85 PathProgramCache]: Analyzing trace with hash 3544231, now seen corresponding path program 1 times [2025-02-17 22:48:58,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:58,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555394898] [2025-02-17 22:48:58,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:58,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:58,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:58,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:58,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,032 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:58,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:58,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:58,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:58,062 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:58,063 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:58,063 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:58,063 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:58,064 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:58,064 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,064 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:58,064 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:58,064 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:58,064 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:58,064 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:58,073 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:58,103 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:58,103 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:58,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:58,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:58,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-17 22:48:58,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:58,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:58,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:58,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:58,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:58,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-17 22:48:58,169 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:58,169 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:58,241 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:58,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-17 22:48:58,246 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:58,246 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:58,246 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:58,246 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:58,246 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:58,246 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,246 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:58,246 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:58,246 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:58,246 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:58,246 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:58,247 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:58,266 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:58,269 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:58,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:58,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:58,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-17 22:48:58,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:58,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:58,286 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:58,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:58,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:58,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:58,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:58,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:58,292 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:58,296 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:48:58,296 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:58,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:58,299 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:58,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-17 22:48:58,304 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:58,304 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:58,305 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:58,305 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:48:58,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:58,315 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:58,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-17 22:48:58,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:58,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:58,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:58,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:58,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:58,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:58,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:58,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:58,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:58,395 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:58,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:58,432 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:48:58,435 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 635 states, 634 states have (on average 2.4321766561514195) internal successors, (1542), 634 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:58,599 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 635 states, 634 states have (on average 2.4321766561514195) internal successors, (1542), 634 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 2051 states and 5422 transitions. Complement of second has 7 states. [2025-02-17 22:48:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:58,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2025-02-17 22:48:58,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 121 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:48:58,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:58,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 121 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:48:58,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:58,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 121 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:48:58,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:58,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2051 states and 5422 transitions. [2025-02-17 22:48:58,636 INFO L131 ngComponentsAnalysis]: Automaton has 166 accepting balls. 400 [2025-02-17 22:48:58,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2051 states to 1534 states and 4166 transitions. [2025-02-17 22:48:58,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 645 [2025-02-17 22:48:58,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 905 [2025-02-17 22:48:58,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1534 states and 4166 transitions. [2025-02-17 22:48:58,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:58,666 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1534 states and 4166 transitions. [2025-02-17 22:48:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states and 4166 transitions. [2025-02-17 22:48:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1276. [2025-02-17 22:48:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1276 states have (on average 2.770376175548589) internal successors, (3535), 1275 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 3535 transitions. [2025-02-17 22:48:58,741 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1276 states and 3535 transitions. [2025-02-17 22:48:58,742 INFO L432 stractBuchiCegarLoop]: Abstraction has 1276 states and 3535 transitions. [2025-02-17 22:48:58,742 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:48:58,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1276 states and 3535 transitions. [2025-02-17 22:48:58,747 INFO L131 ngComponentsAnalysis]: Automaton has 166 accepting balls. 400 [2025-02-17 22:48:58,748 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:58,748 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:58,748 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:48:58,748 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:58,748 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[123] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:48:58,749 INFO L754 eck$LassoCheckResult]: Loop: "[101] L39-->L41: Formula: (< v_x3_5 v_z_5) InVars {x3=v_x3_5, z=v_z_5} OutVars{x3=v_x3_5, z=v_z_5} AuxVars[] AssignedVars[]" "[103] L41-->L39: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-02-17 22:48:58,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:58,749 INFO L85 PathProgramCache]: Analyzing trace with hash 114358, now seen corresponding path program 1 times [2025-02-17 22:48:58,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:58,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232192557] [2025-02-17 22:48:58,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:58,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:58,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:58,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:58,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,752 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:58,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:58,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:58,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:58,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash 4195, now seen corresponding path program 1 times [2025-02-17 22:48:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951878142] [2025-02-17 22:48:58,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:58,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:58,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:58,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:58,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,762 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:58,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:58,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:58,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:58,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:58,765 INFO L85 PathProgramCache]: Analyzing trace with hash 109901272, now seen corresponding path program 1 times [2025-02-17 22:48:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580536319] [2025-02-17 22:48:58,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:58,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:58,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:58,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,769 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:58,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:58,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:58,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:58,772 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:58,783 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:58,783 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:58,783 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:58,783 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:58,783 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:58,783 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,783 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:58,783 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:58,783 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:58,783 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:58,783 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:58,784 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:58,799 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:58,799 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:58,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:58,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:58,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-17 22:48:58,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:58,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:58,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:58,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:58,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:58,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-17 22:48:58,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:58,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:58,893 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:58,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:48:58,897 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:58,898 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:58,898 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:58,898 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:58,898 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:58,898 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,898 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:58,898 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:58,898 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:58,898 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:58,898 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:58,898 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:58,914 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:58,914 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:58,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:58,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:58,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-17 22:48:58,918 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 [2025-02-17 22:48:58,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:58,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:58,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:58,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:58,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:58,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:58,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:58,932 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:58,936 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:58,936 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:48:58,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:58,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:58,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:58,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-17 22:48:58,940 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:58,940 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:58,940 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:58,940 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:48:58,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:58,947 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:58,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:58,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:58,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:58,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:58,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:58,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:58,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:58,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:58,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:58,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:58,978 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:58,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:58,994 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:48:58,995 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1276 states and 3535 transitions. cyclomatic complexity: 2539 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:59,142 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1276 states and 3535 transitions. cyclomatic complexity: 2539. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4466 states and 12944 transitions. Complement of second has 7 states. [2025-02-17 22:48:59,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2025-02-17 22:48:59,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 124 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:48:59,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:59,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 124 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:48:59,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:59,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 124 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:48:59,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:59,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4466 states and 12944 transitions. [2025-02-17 22:48:59,147 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 [2025-02-17 22:48:59,177 INFO L131 ngComponentsAnalysis]: Automaton has 111 accepting balls. 236 [2025-02-17 22:48:59,197 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4466 states to 2804 states and 8246 transitions. [2025-02-17 22:48:59,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 803 [2025-02-17 22:48:59,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1097 [2025-02-17 22:48:59,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2804 states and 8246 transitions. [2025-02-17 22:48:59,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:59,200 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2804 states and 8246 transitions. [2025-02-17 22:48:59,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states and 8246 transitions. [2025-02-17 22:48:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2514. [2025-02-17 22:48:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 2514 states have (on average 3.0354017501988864) internal successors, (7631), 2513 states have internal predecessors, (7631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 7631 transitions. [2025-02-17 22:48:59,252 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2514 states and 7631 transitions. [2025-02-17 22:48:59,252 INFO L432 stractBuchiCegarLoop]: Abstraction has 2514 states and 7631 transitions. [2025-02-17 22:48:59,252 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:48:59,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2514 states and 7631 transitions. [2025-02-17 22:48:59,263 INFO L131 ngComponentsAnalysis]: Automaton has 111 accepting balls. 236 [2025-02-17 22:48:59,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:59,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:59,264 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:48:59,264 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:59,264 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[123] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[126] L14-->L54: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:48:59,264 INFO L754 eck$LassoCheckResult]: Loop: "[110] L54-->L56: Formula: (< v_x4_5 v_z_9) InVars {x4=v_x4_5, z=v_z_9} OutVars{x4=v_x4_5, z=v_z_9} AuxVars[] AssignedVars[]" "[112] L56-->L54: Formula: (= v_x4_6 (+ v_x4_7 1)) InVars {x4=v_x4_7} OutVars{x4=v_x4_6} AuxVars[] AssignedVars[x4]" [2025-02-17 22:48:59,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:59,265 INFO L85 PathProgramCache]: Analyzing trace with hash 3545224, now seen corresponding path program 1 times [2025-02-17 22:48:59,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:59,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321068064] [2025-02-17 22:48:59,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:59,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:59,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:59,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:59,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:59,268 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:59,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:59,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:59,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:59,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:59,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:59,271 INFO L85 PathProgramCache]: Analyzing trace with hash 4483, now seen corresponding path program 1 times [2025-02-17 22:48:59,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:59,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794956725] [2025-02-17 22:48:59,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:59,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:59,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:59,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:59,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:59,273 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:59,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:59,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:59,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:59,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:59,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash -888003510, now seen corresponding path program 1 times [2025-02-17 22:48:59,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:59,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442441101] [2025-02-17 22:48:59,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:59,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:59,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:59,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:59,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:59,284 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:59,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:59,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:59,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:59,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:59,305 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:59,305 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:59,305 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:59,305 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:59,305 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:59,305 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,305 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:59,305 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:59,305 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:59,305 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:59,305 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:59,306 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:59,322 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:59,322 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:59,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:59,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:59,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-17 22:48:59,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:59,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:59,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-17 22:48:59,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:59,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:59,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-17 22:48:59,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:59,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:59,417 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:59,422 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 [2025-02-17 22:48:59,423 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:59,423 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:59,423 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:59,423 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:59,423 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:59,423 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,423 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:59,423 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:59,423 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:59,423 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:59,423 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:59,424 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:59,441 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:59,441 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:59,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:59,444 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:59,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-17 22:48:59,447 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:59,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:59,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:59,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:59,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:59,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:59,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:59,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:59,460 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:59,463 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:59,463 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:59,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:59,465 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:59,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-17 22:48:59,468 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:59,468 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:59,468 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:59,468 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:48:59,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:59,474 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:59,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:59,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:59,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:59,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:59,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:59,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:59,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:59,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:59,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:59,502 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:59,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:59,517 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:48:59,517 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2514 states and 7631 transitions. cyclomatic complexity: 5525 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:59,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-17 22:48:59,685 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2514 states and 7631 transitions. cyclomatic complexity: 5525. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8141 states and 24853 transitions. Complement of second has 7 states. [2025-02-17 22:48:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:48:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-02-17 22:48:59,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 130 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:48:59,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:59,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 130 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:48:59,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:59,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 130 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:48:59,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:59,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8141 states and 24853 transitions. [2025-02-17 22:48:59,742 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 12 [2025-02-17 22:48:59,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8141 states to 145 states and 322 transitions. [2025-02-17 22:48:59,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63 [2025-02-17 22:48:59,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 63 [2025-02-17 22:48:59,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 322 transitions. [2025-02-17 22:48:59,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:59,745 INFO L218 hiAutomatonCegarLoop]: Abstraction has 145 states and 322 transitions. [2025-02-17 22:48:59,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 322 transitions. [2025-02-17 22:48:59,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2025-02-17 22:48:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 145 states have (on average 2.220689655172414) internal successors, (322), 144 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:59,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 322 transitions. [2025-02-17 22:48:59,749 INFO L240 hiAutomatonCegarLoop]: Abstraction has 145 states and 322 transitions. [2025-02-17 22:48:59,749 INFO L432 stractBuchiCegarLoop]: Abstraction has 145 states and 322 transitions. [2025-02-17 22:48:59,749 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:48:59,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 145 states and 322 transitions. [2025-02-17 22:48:59,749 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 12 [2025-02-17 22:48:59,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:59,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:59,750 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:48:59,750 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:59,750 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[91] L24-->L28: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[93] L28-->L29: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[95] L29-->L30-1: Formula: (<= 3 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-02-17 22:48:59,750 INFO L754 eck$LassoCheckResult]: Loop: "[97] L30-1-->L32: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[99] L32-->L30-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:48:59,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash 109870264, now seen corresponding path program 1 times [2025-02-17 22:48:59,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:59,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217770573] [2025-02-17 22:48:59,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:59,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:59,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:59,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:59,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:48:59,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217770573] [2025-02-17 22:48:59,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217770573] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:48:59,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:48:59,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:48:59,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322322284] [2025-02-17 22:48:59,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:48:59,801 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:48:59,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash 4067, now seen corresponding path program 1 times [2025-02-17 22:48:59,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:59,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152084385] [2025-02-17 22:48:59,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:59,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:59,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:59,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:59,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:59,806 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:59,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:59,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:59,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:59,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:59,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:59,818 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:59,819 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:59,819 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:59,819 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:59,819 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:59,819 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,819 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:59,819 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:59,819 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:48:59,819 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:59,819 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:59,819 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:59,835 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:59,835 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:59,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:59,838 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:59,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-17 22:48:59,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:59,840 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:59,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-17 22:48:59,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:59,859 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:59,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-17 22:48:59,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:59,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:59,931 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:59,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-17 22:48:59,937 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:59,937 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:59,937 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:59,937 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:59,937 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:59,937 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,937 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:59,937 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:59,937 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:48:59,937 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:59,937 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:59,938 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:59,955 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:59,955 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:59,957 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:59,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-17 22:48:59,960 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:48:59,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:59,971 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:59,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:59,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:59,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:59,972 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:59,972 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:59,974 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:59,977 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:48:59,978 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:59,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:59,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:59,979 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:48:59,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-17 22:48:59,982 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:59,982 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:59,982 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:59,982 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:48:59,988 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 [2025-02-17 22:48:59,989 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:59,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:00,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:49:00,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:49:00,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:00,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:00,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:00,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:00,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:00,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:00,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:00,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:00,013 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:00,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:00,028 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:49:00,028 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 145 states and 322 transitions. cyclomatic complexity: 201 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:00,062 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 145 states and 322 transitions. cyclomatic complexity: 201. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 301 states and 696 transitions. Complement of second has 7 states. [2025-02-17 22:49:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2025-02-17 22:49:00,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:49:00,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:00,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:49:00,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:00,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:49:00,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:00,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 301 states and 696 transitions. [2025-02-17 22:49:00,072 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2025-02-17 22:49:00,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 301 states to 205 states and 449 transitions. [2025-02-17 22:49:00,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63 [2025-02-17 22:49:00,073 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 81 [2025-02-17 22:49:00,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 449 transitions. [2025-02-17 22:49:00,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:00,073 INFO L218 hiAutomatonCegarLoop]: Abstraction has 205 states and 449 transitions. [2025-02-17 22:49:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 449 transitions. [2025-02-17 22:49:00,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:49:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 147. [2025-02-17 22:49:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 147 states have (on average 2.204081632653061) internal successors, (324), 146 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 324 transitions. [2025-02-17 22:49:00,076 INFO L240 hiAutomatonCegarLoop]: Abstraction has 147 states and 324 transitions. [2025-02-17 22:49:00,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:49:00,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:49:00,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:49:00,080 INFO L87 Difference]: Start difference. First operand 147 states and 324 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:49:00,097 INFO L93 Difference]: Finished difference Result 84 states and 165 transitions. [2025-02-17 22:49:00,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 165 transitions. [2025-02-17 22:49:00,098 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2025-02-17 22:49:00,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 74 states and 141 transitions. [2025-02-17 22:49:00,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2025-02-17 22:49:00,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2025-02-17 22:49:00,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 141 transitions. [2025-02-17 22:49:00,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:49:00,099 INFO L218 hiAutomatonCegarLoop]: Abstraction has 74 states and 141 transitions. [2025-02-17 22:49:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 141 transitions. [2025-02-17 22:49:00,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2025-02-17 22:49:00,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.9054054054054055) internal successors, (141), 73 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 141 transitions. [2025-02-17 22:49:00,100 INFO L240 hiAutomatonCegarLoop]: Abstraction has 74 states and 141 transitions. [2025-02-17 22:49:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-17 22:49:00,102 INFO L432 stractBuchiCegarLoop]: Abstraction has 74 states and 141 transitions. [2025-02-17 22:49:00,102 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:49:00,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 141 transitions. [2025-02-17 22:49:00,102 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2025-02-17 22:49:00,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:49:00,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:49:00,103 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:49:00,103 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:49:00,103 INFO L752 eck$LassoCheckResult]: Stem: "[84] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[120] L13-->L24: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[123] L13-1-->L39: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[100] L39-->L43: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[102] L43-->L44: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[91] L24-->L28: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[93] L28-->L29: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[104] L44-->L45-1: Formula: (<= 3 v_x2_6) InVars {x2=v_x2_6} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[]" [2025-02-17 22:49:00,103 INFO L754 eck$LassoCheckResult]: Loop: "[106] L45-1-->L47: Formula: (< v_x4_1 v_z_7) InVars {x4=v_x4_1, z=v_z_7} OutVars{x4=v_x4_1, z=v_z_7} AuxVars[] AssignedVars[]" "[108] L47-->L45-1: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:49:00,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1302851726, now seen corresponding path program 1 times [2025-02-17 22:49:00,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:00,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923160160] [2025-02-17 22:49:00,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:00,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:00,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:49:00,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:49:00,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:00,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:00,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:49:00,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923160160] [2025-02-17 22:49:00,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923160160] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:49:00,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:49:00,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:49:00,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351024779] [2025-02-17 22:49:00,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:49:00,144 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:49:00,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 4355, now seen corresponding path program 1 times [2025-02-17 22:49:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:49:00,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607415825] [2025-02-17 22:49:00,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:49:00,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:49:00,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:00,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:00,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:00,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:00,148 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:49:00,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:00,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:00,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:00,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:49:00,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:49:00,169 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:00,169 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:00,169 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:00,169 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:00,169 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:49:00,169 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:00,169 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:00,169 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:00,169 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:49:00,169 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:00,169 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:00,170 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:00,190 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:00,190 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:49:00,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:00,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:00,204 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:00,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-17 22:49:00,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:49:00,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:00,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-02-17 22:49:00,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:00,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:00,230 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:00,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-17 22:49:00,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:49:00,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:49:00,299 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:49:00,304 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 [2025-02-17 22:49:00,304 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:49:00,304 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:49:00,304 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:49:00,304 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:49:00,304 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:49:00,304 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:00,304 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:49:00,304 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:49:00,304 INFO L132 ssoRankerPreferences]: Filename of dumped script: barrier-3t.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:49:00,304 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:49:00,304 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:49:00,305 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:49:00,319 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:49:00,319 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:49:00,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:00,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:00,321 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:00,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-17 22:49:00,323 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-17 22:49:00,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:49:00,333 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:49:00,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:49:00,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:49:00,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:49:00,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:49:00,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:49:00,336 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:49:00,338 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:49:00,338 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:49:00,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:49:00,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:49:00,340 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:49:00,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-17 22:49:00,342 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:49:00,342 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:49:00,342 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:49:00,342 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:49:00,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-17 22:49:00,355 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:49:00,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:49:00,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:49:00,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:49:00,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:00,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:00,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:49:00,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:00,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:49:00,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:49:00,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:49:00,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:49:00,389 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:49:00,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:49:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:49:00,402 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-17 22:49:00,402 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 141 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:00,421 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 141 transitions. cyclomatic complexity: 80. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 192 transitions. Complement of second has 6 states. [2025-02-17 22:49:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:49:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2025-02-17 22:49:00,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:49:00,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:00,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 10 letters. Loop has 2 letters. [2025-02-17 22:49:00,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:00,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 33 transitions. Stem has 8 letters. Loop has 4 letters. [2025-02-17 22:49:00,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:49:00,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 192 transitions. [2025-02-17 22:49:00,423 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:49:00,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 0 states and 0 transitions. [2025-02-17 22:49:00,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:49:00,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:49:00,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:49:00,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:49:00,423 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:00,423 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:00,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:49:00,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-17 22:49:00,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-17 22:49:00,424 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:49:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:49:00,424 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-17 22:49:00,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-17 22:49:00,424 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:49:00,424 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-17 22:49:00,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:49:00,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:49:00,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:49:00,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:49:00,424 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:00,424 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:00,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-17 22:49:00,424 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:49:00,424 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-17 22:49:00,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:49:00,424 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:49:00,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:49:00,433 INFO L201 PluginConnector]: Adding new model barrier-3t.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:49:00 BoogieIcfgContainer [2025-02-17 22:49:00,434 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:49:00,434 INFO L158 Benchmark]: Toolchain (without parser) took 3580.14ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 86.6MB in the beginning and 88.9MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:00,434 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:00,435 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.38ms. Allocated memory is still 155.2MB. Free memory was 86.6MB in the beginning and 85.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:00,435 INFO L158 Benchmark]: Boogie Preprocessor took 12.29ms. Allocated memory is still 155.2MB. Free memory was 85.4MB in the beginning and 84.6MB in the end (delta: 797.2kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:00,435 INFO L158 Benchmark]: RCFGBuilder took 155.24ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 75.2MB in the end (delta: 9.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-02-17 22:49:00,436 INFO L158 Benchmark]: BuchiAutomizer took 3393.46ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 75.2MB in the beginning and 88.9MB in the end (delta: -13.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:49:00,436 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 87.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 16.38ms. Allocated memory is still 155.2MB. Free memory was 86.6MB in the beginning and 85.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 12.29ms. Allocated memory is still 155.2MB. Free memory was 85.4MB in the beginning and 84.6MB in the end (delta: 797.2kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 155.24ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 75.2MB in the end (delta: 9.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 3393.46ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 75.2MB in the beginning and 88.9MB in the end (delta: -13.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 606 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 265 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 260 mSDsluCounter, 312 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 149 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 290 IncrementalHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 163 mSDtfsCounter, 290 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 35ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.7s InitialAbstraction: Time to compute Ample Reduction [ms]: 703, Trivial Ample Sets caused by loops: 561, Number of non-trivial ample sets: 744, Number of pruned transitions: 555, Number of transitions in reduction automaton: 1542, Number of states in reduction automaton: 635, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:49:00,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-17 22:49:00,649 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...