/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/2_thr/complex_thr1_2indep.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:48:45,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:48:45,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:48:45,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:48:45,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:48:45,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:48:45,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:48:45,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:48:45,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:48:45,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:48:45,102 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:48:45,102 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:48:45,102 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:48:45,102 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:48:45,102 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:48:45,102 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:48:45,102 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:48:45,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:48:45,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:48:45,102 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:48:45,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:48:45,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:48:45,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:48:45,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:48:45,105 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:48:45,105 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 22:48:45,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:48:45,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:48:45,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:48:45,334 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:48:45,335 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:48:45,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/complex_thr1_2indep.c.bpl [2025-02-17 22:48:45,337 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/complex_thr1_2indep.c.bpl' [2025-02-17 22:48:45,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:48:45,351 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:48:45,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:45,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:48:45,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:48:45,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,367 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:48:45,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:45,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:48:45,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:48:45,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:48:45,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,376 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,380 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:48:45,381 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:48:45,381 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:48:45,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:48:45,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/1) ... [2025-02-17 22:48:45,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:45,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:45,450 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 22:48:45,453 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 22:48:45,473 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:48:45,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:48:45,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:48:45,474 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:48:45,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:48:45,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:48:45,474 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:48:45,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:48:45,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:48:45,475 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 22:48:45,504 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:48:45,506 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:48:45,558 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:48:45,558 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:48:45,566 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:48:45,567 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:48:45,567 INFO L201 PluginConnector]: Adding new model complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:45 BoogieIcfgContainer [2025-02-17 22:48:45,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:48:45,568 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:48:45,568 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:48:45,571 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:48:45,572 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:45,572 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:45" (1/2) ... [2025-02-17 22:48:45,573 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e8f7b76 and model type complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:48:45, skipping insertion in model container [2025-02-17 22:48:45,573 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:45,573 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:45" (2/2) ... [2025-02-17 22:48:45,573 INFO L363 chiAutomizerObserver]: Analyzing ICFG complex_thr1_2indep.c.bpl [2025-02-17 22:48:45,618 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:48:45,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 26 transitions, 66 flow [2025-02-17 22:48:45,679 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-02-17 22:48:45,680 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:48:45,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2025-02-17 22:48:45,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 26 transitions, 66 flow [2025-02-17 22:48:45,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 22 transitions, 56 flow [2025-02-17 22:48:45,694 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:48:45,761 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:48:45,761 INFO L101 AmpleReduction]: Number of pruned transitions: 24, Number of non-trivial ample sets: 29 [2025-02-17 22:48:45,761 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 28 [2025-02-17 22:48:45,766 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:48:45,766 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:48:45,766 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:48:45,766 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:48:45,766 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:48:45,767 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:48:45,767 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:48:45,767 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:48:45,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 50 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 49 states have internal predecessors, (79), 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 22:48:45,778 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 34 [2025-02-17 22:48:45,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:45,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:45,781 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:48:45,781 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:45,781 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:48:45,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 50 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 49 states have internal predecessors, (79), 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 22:48:45,783 INFO L131 ngComponentsAnalysis]: Automaton has 10 accepting balls. 34 [2025-02-17 22:48:45,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:45,784 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:45,784 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:48:45,784 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:45,787 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[59] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[60] L21-->L22: Formula: (= v_i_1 v_x_1) InVars {x=v_x_1} OutVars{i=v_i_1, x=v_x_1} AuxVars[] AssignedVars[i]" "[61] L22-->L24-1: Formula: (and (< 0 v_x_2) (< 0 v_y_1)) InVars {y=v_y_1, x=v_x_2} OutVars{y=v_y_1, x=v_x_2} AuxVars[] AssignedVars[]" [2025-02-17 22:48:45,788 INFO L754 eck$LassoCheckResult]: Loop: "[64] L24-1-->L26: Formula: (< 0 v_i_2) InVars {i=v_i_2} OutVars{i=v_i_2} AuxVars[] AssignedVars[]" "[68] L26-->L27: Formula: (= (+ v_i_3 1) v_i_4) InVars {i=v_i_4} OutVars{i=v_i_3} AuxVars[] AssignedVars[i]" "[70] L27-->L24-1: Formula: (= (+ v_z_3 1) v_z_2) InVars {z=v_z_3} OutVars{z=v_z_2} AuxVars[] AssignedVars[z]" [2025-02-17 22:48:45,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:45,791 INFO L85 PathProgramCache]: Analyzing trace with hash 3305839, now seen corresponding path program 1 times [2025-02-17 22:48:45,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:45,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894749378] [2025-02-17 22:48:45,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:45,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:45,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:45,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:45,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,851 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:45,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:45,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:45,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:45,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 93473, now seen corresponding path program 1 times [2025-02-17 22:48:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:45,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345201930] [2025-02-17 22:48:45,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:45,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:45,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:45,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:45,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,884 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:45,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:45,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:45,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:45,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash -299934477, now seen corresponding path program 1 times [2025-02-17 22:48:45,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982213903] [2025-02-17 22:48:45,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:45,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:45,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:48:45,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:48:45,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,903 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:45,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:48:45,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:48:45,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:45,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:45,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:45,950 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:45,951 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:45,951 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:45,951 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:45,951 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:45,951 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:45,951 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:45,951 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:45,951 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2indep.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:45,951 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:45,951 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:45,960 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:45,970 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,008 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:46,008 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:46,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,012 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 22:48:46,013 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 22:48:46,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:46,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:48:46,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,035 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 22:48:46,035 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 22:48:46,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:46,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,059 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:46,063 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 22:48:46,063 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:46,063 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:46,063 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:46,063 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:46,063 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:46,063 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,063 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:46,063 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:46,063 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2indep.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:46,063 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:46,063 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:46,064 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,071 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,098 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:46,101 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:46,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,104 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 22:48:46,105 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 22:48:46,106 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 22:48:46,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:46,116 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:46,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:46,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:46,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:46,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:46,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:46,122 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:46,125 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-02-17 22:48:46,125 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:48:46,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,128 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 22:48:46,129 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 22:48:46,129 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:46,129 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:46,129 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:46,130 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(i) = 1*i Supporting invariants [] [2025-02-17 22:48:46,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-17 22:48:46,140 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:46,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,187 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 22:48:46,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:46,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:46,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:46,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:46,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,205 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:46,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:46,280 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 22:48:46,293 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:48:46,296 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 50 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 49 states have internal predecessors, (79), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 22:48:46,395 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 50 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 49 states have internal predecessors, (79), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 130 states and 203 transitions. Complement of second has 7 states. [2025-02-17 22:48:46,396 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 22:48:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 22:48:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2025-02-17 22:48:46,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 4 letters. Loop has 3 letters. [2025-02-17 22:48:46,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-17 22:48:46,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 4 letters. Loop has 6 letters. [2025-02-17 22:48:46,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,408 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 203 transitions. [2025-02-17 22:48:46,414 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 31 [2025-02-17 22:48:46,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 79 states and 128 transitions. [2025-02-17 22:48:46,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2025-02-17 22:48:46,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 63 [2025-02-17 22:48:46,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 128 transitions. [2025-02-17 22:48:46,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:46,424 INFO L218 hiAutomatonCegarLoop]: Abstraction has 79 states and 128 transitions. [2025-02-17 22:48:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 128 transitions. [2025-02-17 22:48:46,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 52. [2025-02-17 22:48:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 52 states have (on average 1.6346153846153846) internal successors, (85), 51 states have internal predecessors, (85), 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 22:48:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 85 transitions. [2025-02-17 22:48:46,449 INFO L240 hiAutomatonCegarLoop]: Abstraction has 52 states and 85 transitions. [2025-02-17 22:48:46,449 INFO L432 stractBuchiCegarLoop]: Abstraction has 52 states and 85 transitions. [2025-02-17 22:48:46,449 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:48:46,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 85 transitions. [2025-02-17 22:48:46,450 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 21 [2025-02-17 22:48:46,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:46,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:46,450 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:48:46,452 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:48:46,452 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[59] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[60] L21-->L22: Formula: (= v_i_1 v_x_1) InVars {x=v_x_1} OutVars{i=v_i_1, x=v_x_1} AuxVars[] AssignedVars[i]" "[61] L22-->L24-1: Formula: (and (< 0 v_x_2) (< 0 v_y_1)) InVars {y=v_y_1, x=v_x_2} OutVars{y=v_y_1, x=v_x_2} AuxVars[] AssignedVars[]" "[63] L24-1-->L29-1: Formula: (<= v_i_5 0) InVars {i=v_i_5} OutVars{i=v_i_5} AuxVars[] AssignedVars[]" [2025-02-17 22:48:46,452 INFO L754 eck$LassoCheckResult]: Loop: "[67] L29-1-->L31: Formula: (< v_i_6 v_y_2) InVars {i=v_i_6, y=v_y_2} OutVars{i=v_i_6, y=v_y_2} AuxVars[] AssignedVars[]" "[69] L31-->L32: Formula: (= (+ v_i_8 1) v_i_7) InVars {i=v_i_8} OutVars{i=v_i_7} AuxVars[] AssignedVars[i]" "[71] L32-->L29-1: Formula: (= v_z_5 (+ v_z_4 1)) InVars {z=v_z_5} OutVars{z=v_z_4} AuxVars[] AssignedVars[z]" [2025-02-17 22:48:46,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash 102481072, now seen corresponding path program 1 times [2025-02-17 22:48:46,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:46,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123901457] [2025-02-17 22:48:46,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:46,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:46,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:46,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:46,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,514 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 22:48:46,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:48:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123901457] [2025-02-17 22:48:46,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123901457] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:48:46,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:48:46,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:48:46,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232127201] [2025-02-17 22:48:46,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:48:46,519 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:48:46,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,520 INFO L85 PathProgramCache]: Analyzing trace with hash 96388, now seen corresponding path program 1 times [2025-02-17 22:48:46,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:46,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483884290] [2025-02-17 22:48:46,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:46,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,529 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:46,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:46,532 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:46,552 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:46,552 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:46,552 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:46,552 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:46,552 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:46,553 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,553 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:46,553 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:46,553 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2indep.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:46,553 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:46,553 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:46,553 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,588 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:46,588 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:46,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,590 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 22:48:46,592 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 22:48:46,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:46,593 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,610 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 22:48:46,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,612 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 22:48:46,613 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 22:48:46,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:46,615 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,643 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-17 22:48:46,643 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {z=0} Honda state: {z=0} Generalized eigenvectors: [{z=-1}, {z=7}, {z=-7}] Lambdas: [8, 1, 1] Nus: [1, 0] [2025-02-17 22:48:46,649 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 22:48:46,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,651 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 22:48:46,652 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 22:48:46,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:46,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-17 22:48:46,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,673 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 22:48:46,673 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 22:48:46,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:46,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:46,740 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:46,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-02-17 22:48:46,745 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:46,745 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:46,745 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:46,745 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:46,745 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:46,745 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,745 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:46,745 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:46,745 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2indep.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:46,745 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:46,745 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:46,746 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:46,777 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:46,777 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:46,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,779 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 22:48:46,781 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 22:48:46,782 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 22:48:46,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:46,793 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:46,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:46,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:46,794 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:46,794 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:46,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:46,800 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-17 22:48:46,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:46,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,809 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 22:48:46,810 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 22:48:46,811 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 22:48:46,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:46,821 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:46,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:46,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:46,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:46,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:46,822 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:46,824 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:46,826 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:46,826 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:48:46,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:46,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:46,828 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 22:48:46,828 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 22:48:46,829 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:46,829 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:46,829 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:46,830 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y, i) = 1*y - 1*i Supporting invariants [] [2025-02-17 22:48:46,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-17 22:48:46,838 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:46,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:46,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:48:46,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:48:46,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:46,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:46,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:48:46,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:48:46,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:46,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:46,877 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:46,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:46,914 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 22:48:46,915 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:48:46,915 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 85 transitions. cyclomatic complexity: 44 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:46,948 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 85 transitions. cyclomatic complexity: 44. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 93 states and 157 transitions. Complement of second has 6 states. [2025-02-17 22:48:46,949 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 22:48:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 35 transitions. [2025-02-17 22:48:46,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 35 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:48:46,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 35 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-17 22:48:46,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 35 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-17 22:48:46,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:46,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 157 transitions. [2025-02-17 22:48:46,952 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 12 [2025-02-17 22:48:46,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 60 states and 104 transitions. [2025-02-17 22:48:46,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2025-02-17 22:48:46,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2025-02-17 22:48:46,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 104 transitions. [2025-02-17 22:48:46,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:46,956 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 104 transitions. [2025-02-17 22:48:46,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 104 transitions. [2025-02-17 22:48:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2025-02-17 22:48:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.8541666666666667) internal successors, (89), 47 states have internal predecessors, (89), 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 22:48:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2025-02-17 22:48:46,958 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 89 transitions. [2025-02-17 22:48:46,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:48:46,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:48:46,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:48:46,961 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 22:48:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:48:46,993 INFO L93 Difference]: Finished difference Result 55 states and 97 transitions. [2025-02-17 22:48:46,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 97 transitions. [2025-02-17 22:48:46,994 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 12 [2025-02-17 22:48:46,995 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 55 states and 97 transitions. [2025-02-17 22:48:46,995 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2025-02-17 22:48:46,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2025-02-17 22:48:46,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 97 transitions. [2025-02-17 22:48:46,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:46,995 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 97 transitions. [2025-02-17 22:48:46,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 97 transitions. [2025-02-17 22:48:46,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2025-02-17 22:48:46,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.8333333333333333) internal successors, (88), 47 states have internal predecessors, (88), 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 22:48:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 88 transitions. [2025-02-17 22:48:46,998 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 88 transitions. [2025-02-17 22:48:46,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-17 22:48:47,000 INFO L432 stractBuchiCegarLoop]: Abstraction has 48 states and 88 transitions. [2025-02-17 22:48:47,000 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:48:47,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 88 transitions. [2025-02-17 22:48:47,000 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2025-02-17 22:48:47,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:47,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:47,001 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:48:47,001 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:47,001 INFO L752 eck$LassoCheckResult]: Stem: "[78] $Ultimate##0-->$Ultimate##0: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[59] $Ultimate##0-->L21: Formula: (= v_z_1 0) InVars {} OutVars{z=v_z_1} AuxVars[] AssignedVars[z]" "[60] L21-->L22: Formula: (= v_i_1 v_x_1) InVars {x=v_x_1} OutVars{i=v_i_1, x=v_x_1} AuxVars[] AssignedVars[i]" "[62] L22-->L22-2: Formula: (or (<= v_x_3 0) (<= v_y_4 0)) InVars {y=v_y_4, x=v_x_3} OutVars{y=v_y_4, x=v_x_3} AuxVars[] AssignedVars[]" "[65] L22-2-->thread1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[]" "[81] L11-->L40: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:48:47,001 INFO L754 eck$LassoCheckResult]: Loop: "[73] L40-->L42: Formula: (< v_x1_1 v_y1_1) InVars {y1=v_y1_1, x1=v_x1_1} OutVars{y1=v_y1_1, x1=v_x1_1} AuxVars[] AssignedVars[]" "[75] L42-->L40: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:48:47,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1118052960, now seen corresponding path program 1 times [2025-02-17 22:48:47,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:47,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618275372] [2025-02-17 22:48:47,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:47,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:47,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:47,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:47,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:47,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:47,009 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:47,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:47,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:47,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:47,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:47,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:47,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash 3299, now seen corresponding path program 1 times [2025-02-17 22:48:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828151487] [2025-02-17 22:48:47,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:47,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:47,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:47,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:47,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:47,019 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:47,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:47,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:47,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:47,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:47,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:47,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash -707068222, now seen corresponding path program 1 times [2025-02-17 22:48:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:47,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073935179] [2025-02-17 22:48:47,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:47,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:47,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:48:47,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:48:47,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:47,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:47,025 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:47,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:48:47,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:48:47,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:47,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:47,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:47,050 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:47,050 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:47,050 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:47,050 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:47,050 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:47,050 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:47,050 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:47,050 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:47,050 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2indep.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:47,050 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:47,050 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:47,050 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:47,066 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:47,066 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:47,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:47,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:47,070 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 22:48:47,070 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 22:48:47,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:47,072 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:47,092 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 22:48:47,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:47,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:47,095 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 22:48:47,097 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 22:48:47,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:47,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:47,162 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:47,166 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 22:48:47,166 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:47,166 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:47,166 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:47,166 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:47,166 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:47,166 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:47,166 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:47,166 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:47,166 INFO L132 ssoRankerPreferences]: Filename of dumped script: complex_thr1_2indep.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:47,166 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:47,167 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:47,167 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:47,186 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:47,186 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:47,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:47,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:47,189 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 22:48:47,191 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 22:48:47,192 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 22:48:47,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:47,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:47,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:47,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:47,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:47,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:47,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:47,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:47,212 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:48:47,212 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:47,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:47,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:47,214 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 22:48:47,216 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 22:48:47,217 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:47,217 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:47,217 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:47,217 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(y1, x1) = 1*y1 - 1*x1 Supporting invariants [] [2025-02-17 22:48:47,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:47,225 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:47,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:47,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:47,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:47,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:47,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:47,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:47,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:47,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:47,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:47,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:47,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:47,261 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:47,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-17 22:48:47,272 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 22:48:47,273 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 88 transitions. cyclomatic complexity: 48 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:47,300 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 88 transitions. cyclomatic complexity: 48. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 116 states and 218 transitions. Complement of second has 6 states. [2025-02-17 22:48:47,302 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 22:48:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2025-02-17 22:48:47,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 47 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:48:47,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:47,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 47 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:48:47,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:47,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 47 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:48:47,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:47,304 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 218 transitions. [2025-02-17 22:48:47,305 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:47,306 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 0 states and 0 transitions. [2025-02-17 22:48:47,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:48:47,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:48:47,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:48:47,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:48:47,306 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:47,306 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:47,306 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:47,306 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:48:47,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:48:47,306 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:47,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:48:47,313 INFO L201 PluginConnector]: Adding new model complex_thr1_2indep.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:48:47 BoogieIcfgContainer [2025-02-17 22:48:47,314 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:48:47,314 INFO L158 Benchmark]: Toolchain (without parser) took 1962.98ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 86.8MB in the beginning and 51.9MB in the end (delta: 34.9MB). Peak memory consumption was 17.3MB. Max. memory is 8.0GB. [2025-02-17 22:48:47,315 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.17ms. Allocated memory is still 159.4MB. Free memory was 87.8MB in the beginning and 87.6MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:47,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.77ms. Allocated memory is still 159.4MB. Free memory was 86.8MB in the beginning and 85.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:47,315 INFO L158 Benchmark]: Boogie Preprocessor took 11.88ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 84.8MB in the end (delta: 760.8kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:47,315 INFO L158 Benchmark]: RCFGBuilder took 185.97ms. Allocated memory is still 159.4MB. Free memory was 84.8MB in the beginning and 76.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:48:47,315 INFO L158 Benchmark]: BuchiAutomizer took 1745.91ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.9MB in the beginning and 51.9MB in the end (delta: 24.0MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2025-02-17 22:48:47,316 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 0.17ms. Allocated memory is still 159.4MB. Free memory was 87.8MB in the beginning and 87.6MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 16.77ms. Allocated memory is still 159.4MB. Free memory was 86.8MB in the beginning and 85.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 11.88ms. Allocated memory is still 159.4MB. Free memory was 85.6MB in the beginning and 84.8MB in the end (delta: 760.8kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 185.97ms. Allocated memory is still 159.4MB. Free memory was 84.8MB in the beginning and 76.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1745.91ms. Allocated memory was 159.4MB in the beginning and 142.6MB in the end (delta: -16.8MB). Free memory was 75.9MB in the beginning and 51.9MB in the end (delta: 24.0MB). Peak memory consumption was 8.9MB. 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 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function y + -1 * i and consists of 4 locations. One deterministic module has affine ranking function -1 * x1 + y1 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 150 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 67 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 83 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp79 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.1s InitialAbstraction: Time to compute Ample Reduction [ms]: 117, Trivial Ample Sets caused by loops: 28, Number of non-trivial ample sets: 29, Number of pruned transitions: 24, Number of transitions in reduction automaton: 79, Number of states in reduction automaton: 50, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:48:47,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-17 22:48:47,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-17 22:48:47,734 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...