/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/me0.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:48:50,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:48:50,445 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:48:50,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:48:50,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:48:50,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:48:50,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:48:50,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:48:50,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:48:50,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:48:50,474 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:48:50,475 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:48:50,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:48:50,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:48:50,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:48:50,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:48:50,477 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:48:50,477 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:48:50,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:48:50,477 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:48:50,478 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:48:50,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:48:50,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:48:50,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:48:50,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:48:50,478 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:48:50,478 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 22:48:50,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:48:50,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:48:50,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:48:50,724 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:48:50,725 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:48:50,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/2_thr/me0.c.bpl [2025-02-17 22:48:50,726 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/2_thr/me0.c.bpl' [2025-02-17 22:48:50,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:48:50,741 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:48:50,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:50,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:48:50,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:48:50,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,758 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:48:50,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:48:50,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:48:50,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:48:50,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:48:50,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,767 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:48:50,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:48:50,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:48:50,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:48:50,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/1) ... [2025-02-17 22:48:50,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:50,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:50,805 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 22:48:50,807 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 22:48:50,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:48:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:48:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:48:50,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:48:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:48:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:48:50,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:48:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:48:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:48:50,828 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 22:48:50,861 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:48:50,863 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:48:50,916 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:48:50,917 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:48:50,924 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:48:50,925 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:48:50,925 INFO L201 PluginConnector]: Adding new model me0.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:50 BoogieIcfgContainer [2025-02-17 22:48:50,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:48:50,926 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:48:50,926 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:48:50,931 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:48:50,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:50,931 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me0.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:48:50" (1/2) ... [2025-02-17 22:48:50,933 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e58349d and model type me0.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:48:50, skipping insertion in model container [2025-02-17 22:48:50,933 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:48:50,933 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me0.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:48:50" (2/2) ... [2025-02-17 22:48:50,935 INFO L363 chiAutomizerObserver]: Analyzing ICFG me0.c.bpl [2025-02-17 22:48:50,988 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-17 22:48:51,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 20 transitions, 54 flow [2025-02-17 22:48:51,054 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-02-17 22:48:51,057 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-17 22:48:51,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2025-02-17 22:48:51,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 20 transitions, 54 flow [2025-02-17 22:48:51,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 16 transitions, 44 flow [2025-02-17 22:48:51,073 WARN L98 AmpleReduction]: Starting ample reduction [2025-02-17 22:48:51,273 INFO L100 AmpleReduction]: Finished ample reduction [2025-02-17 22:48:51,273 INFO L101 AmpleReduction]: Number of pruned transitions: 13, Number of non-trivial ample sets: 19 [2025-02-17 22:48:51,273 INFO L103 AmpleReduction]: Number of trivial ample sets caused by loops: 6 [2025-02-17 22:48:51,281 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:48:51,281 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:48:51,281 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:48:51,281 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:48:51,281 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:48:51,284 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:48:51,284 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:48:51,284 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:48:51,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 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 22:48:51,298 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 18 [2025-02-17 22:48:51,299 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:51,299 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:51,301 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:51,301 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:51,302 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:48:51,302 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 38 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 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 22:48:51,303 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 18 [2025-02-17 22:48:51,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:51,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:51,303 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:48:51,303 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:51,307 INFO L752 eck$LassoCheckResult]: Stem: "[32] $Ultimate##0-->L10: Formula: (= v_f_4 0) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" "[51] L10-->L19: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:48:51,308 INFO L754 eck$LassoCheckResult]: Loop: "[40] L19-->L21: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[42] L21-->L19: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:48:51,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2004, now seen corresponding path program 1 times [2025-02-17 22:48:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:51,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101171713] [2025-02-17 22:48:51,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:51,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:51,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:51,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:51,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:51,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:51,371 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:51,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:51,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:51,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:51,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:51,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:51,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2243, now seen corresponding path program 1 times [2025-02-17 22:48:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:51,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713189997] [2025-02-17 22:48:51,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:51,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:51,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:51,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:51,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:51,399 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:51,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:51,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:51,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:51,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:51,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:51,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1927126, now seen corresponding path program 1 times [2025-02-17 22:48:51,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:51,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201858302] [2025-02-17 22:48:51,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:51,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:51,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:51,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:51,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:51,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:51,413 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:51,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:48:51,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:48:51,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:51,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:51,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:51,452 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:51,453 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:51,453 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:51,453 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:51,453 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:51,453 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:51,453 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:51,453 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:51,454 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:51,454 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:51,454 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:51,462 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:51,521 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:51,521 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:51,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:51,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:51,524 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 22:48:51,526 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 22:48:51,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:51,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:51,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:51,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:51,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:51,551 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 22:48:51,552 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 22:48:51,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:51,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:51,629 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:51,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:51,635 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:51,635 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:51,635 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:51,635 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:51,635 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:51,635 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:51,636 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:51,636 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:51,636 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:48:51,636 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:51,636 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:51,637 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:51,666 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:51,669 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:51,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:51,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:51,674 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 22:48:51,697 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 22:48:51,698 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 22:48:51,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:51,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:51,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:51,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:51,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:51,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:51,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:51,721 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:51,727 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:48:51,727 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:48:51,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:51,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:51,753 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 22:48:51,754 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 22:48:51,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:51,755 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:51,755 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:51,756 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:48:51,761 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 22:48:51,764 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:51,790 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 22:48:51,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:51,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:51,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:51,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:51,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:51,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:51,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:51,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:51,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:51,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:51,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:51,826 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:51,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:51,843 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 22:48:51,874 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 22:48:51,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 38 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:51,976 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 38 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 116 states and 200 transitions. Complement of second has 7 states. [2025-02-17 22:48:51,977 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 22:48:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:48:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2025-02-17 22:48:51,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:48:51,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:51,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:48:51,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:51,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:48:51,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:51,985 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 200 transitions. [2025-02-17 22:48:51,988 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 14 [2025-02-17 22:48:51,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 60 states and 112 transitions. [2025-02-17 22:48:51,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2025-02-17 22:48:51,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2025-02-17 22:48:51,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 112 transitions. [2025-02-17 22:48:51,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:51,993 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 112 transitions. [2025-02-17 22:48:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 112 transitions. [2025-02-17 22:48:52,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 43. [2025-02-17 22:48:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 42 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 22:48:52,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 85 transitions. [2025-02-17 22:48:52,010 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43 states and 85 transitions. [2025-02-17 22:48:52,011 INFO L432 stractBuchiCegarLoop]: Abstraction has 43 states and 85 transitions. [2025-02-17 22:48:52,011 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:48:52,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 85 transitions. [2025-02-17 22:48:52,013 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 14 [2025-02-17 22:48:52,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:52,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:52,013 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-17 22:48:52,013 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:52,013 INFO L752 eck$LassoCheckResult]: Stem: "[32] $Ultimate##0-->L10: Formula: (= v_f_4 0) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" "[51] L10-->L19: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[54] L10-1-->$Ultimate##0: 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]" "[39] L19-->L23: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[41] L23-->thread1FINAL: Formula: (= (+ v_f_2 1) v_f_1) InVars {f=v_f_2} OutVars{f=v_f_1} AuxVars[] AssignedVars[f]" "[44] $Ultimate##0-->L30-1: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" [2025-02-17 22:48:52,014 INFO L754 eck$LassoCheckResult]: Loop: "[46] L30-1-->L32: Formula: (< v_y_1 v_x1_5) InVars {y=v_y_1, x1=v_x1_5} OutVars{y=v_y_1, x1=v_x1_5} AuxVars[] AssignedVars[]" "[48] L32-->L30-1: Formula: (= v_x1_7 (+ v_x1_6 1)) InVars {x1=v_x1_7} OutVars{x1=v_x1_6} AuxVars[] AssignedVars[x1]" [2025-02-17 22:48:52,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1852383592, now seen corresponding path program 1 times [2025-02-17 22:48:52,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:52,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584242035] [2025-02-17 22:48:52,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:52,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:52,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:52,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:52,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,019 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:52,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:52,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:52,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:52,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2435, now seen corresponding path program 1 times [2025-02-17 22:48:52,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:52,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930001692] [2025-02-17 22:48:52,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:52,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:52,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:52,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:52,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,027 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:52,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:52,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:52,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:52,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2024172842, now seen corresponding path program 1 times [2025-02-17 22:48:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818557973] [2025-02-17 22:48:52,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:52,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:52,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:48:52,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:48:52,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,037 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:52,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:48:52,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:48:52,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:52,073 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:52,073 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:52,073 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:52,073 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:52,073 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:52,073 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,073 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:52,073 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:52,073 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:52,073 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:52,073 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:52,074 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:52,102 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:52,102 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:52,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,104 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 22:48:52,105 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 22:48:52,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:52,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:52,124 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 22:48:52,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,125 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 22:48:52,126 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 22:48:52,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:52,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:52,198 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:52,202 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 22:48:52,203 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:52,203 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:52,203 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:52,203 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:52,203 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:52,203 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,203 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:52,203 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:52,203 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:48:52,203 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:52,203 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:52,204 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:52,225 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:52,225 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:52,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,227 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 22:48:52,228 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 22:48:52,229 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 22:48:52,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:52,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:52,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:52,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:52,239 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:52,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:52,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:52,243 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:52,244 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:52,244 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:48:52,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,246 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 22:48:52,247 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 22:48:52,248 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:52,248 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:52,248 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:52,248 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, y) = 1*x1 - 1*y Supporting invariants [] [2025-02-17 22:48:52,253 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 22:48:52,254 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:52,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:48:52,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:48:52,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:52,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:52,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:52,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:52,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:52,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:52,295 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:52,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:52,309 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 22:48:52,310 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 22:48:52,310 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 85 transitions. cyclomatic complexity: 52 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 22:48:52,363 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 85 transitions. cyclomatic complexity: 52. 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 101 states and 188 transitions. Complement of second has 7 states. [2025-02-17 22:48:52,364 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 22:48:52,364 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 22:48:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2025-02-17 22:48:52,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:48:52,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:52,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:48:52,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:52,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-17 22:48:52,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:52,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 188 transitions. [2025-02-17 22:48:52,368 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 14 [2025-02-17 22:48:52,368 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 59 states and 114 transitions. [2025-02-17 22:48:52,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2025-02-17 22:48:52,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2025-02-17 22:48:52,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 114 transitions. [2025-02-17 22:48:52,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:52,369 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59 states and 114 transitions. [2025-02-17 22:48:52,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 114 transitions. [2025-02-17 22:48:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2025-02-17 22:48:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 states have internal predecessors, (93), 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 22:48:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 93 transitions. [2025-02-17 22:48:52,371 INFO L240 hiAutomatonCegarLoop]: Abstraction has 46 states and 93 transitions. [2025-02-17 22:48:52,371 INFO L432 stractBuchiCegarLoop]: Abstraction has 46 states and 93 transitions. [2025-02-17 22:48:52,372 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:48:52,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 93 transitions. [2025-02-17 22:48:52,372 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 14 [2025-02-17 22:48:52,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:48:52,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:48:52,372 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:48:52,373 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:48:52,373 INFO L752 eck$LassoCheckResult]: Stem: "[32] $Ultimate##0-->L10: Formula: (= v_f_4 0) InVars {f=v_f_4} OutVars{f=v_f_4} AuxVars[] AssignedVars[]" "[51] L10-->L19: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[54] L10-1-->$Ultimate##0: 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]" "[44] $Ultimate##0-->L30-1: Formula: (< 0 v_f_3) InVars {f=v_f_3} OutVars{f=v_f_3} AuxVars[] AssignedVars[]" "[46] L30-1-->L32: Formula: (< v_y_1 v_x1_5) InVars {y=v_y_1, x1=v_x1_5} OutVars{y=v_y_1, x1=v_x1_5} AuxVars[] AssignedVars[]" "[48] L32-->L30-1: Formula: (= v_x1_7 (+ v_x1_6 1)) InVars {x1=v_x1_7} OutVars{x1=v_x1_6} AuxVars[] AssignedVars[x1]" "[45] L30-1-->thread2FINAL: Formula: (<= v_x1_8 v_y_2) InVars {y=v_y_2, x1=v_x1_8} OutVars{y=v_y_2, x1=v_x1_8} AuxVars[] AssignedVars[]" [2025-02-17 22:48:52,373 INFO L754 eck$LassoCheckResult]: Loop: "[40] L19-->L21: Formula: (< v_x1_1 v_z_1) InVars {x1=v_x1_1, z=v_z_1} OutVars{x1=v_x1_1, z=v_z_1} AuxVars[] AssignedVars[]" "[42] L21-->L19: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:48:52,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1589470433, now seen corresponding path program 1 times [2025-02-17 22:48:52,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:52,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633901104] [2025-02-17 22:48:52,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:48:52,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:52,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:48:52,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:48:52,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-17 22:48:52,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:48:52,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633901104] [2025-02-17 22:48:52,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633901104] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:48:52,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:48:52,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:48:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097499725] [2025-02-17 22:48:52,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:48:52,413 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:48:52,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2243, now seen corresponding path program 2 times [2025-02-17 22:48:52,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:48:52,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106345439] [2025-02-17 22:48:52,413 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-17 22:48:52,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:48:52,415 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:52,416 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:52,416 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-17 22:48:52,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,416 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:48:52,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:52,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:52,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:48:52,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:48:52,433 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:52,433 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:52,433 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:52,433 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:52,433 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:48:52,433 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,433 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:52,433 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:52,434 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:52,434 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:52,434 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:52,434 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:52,454 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:52,454 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:48:52,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,456 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 22:48:52,458 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 22:48:52,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:48:52,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:52,477 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 22:48:52,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,479 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 22:48:52,479 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 22:48:52,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:48:52,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:48:52,552 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:48:52,556 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 22:48:52,556 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:48:52,556 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:48:52,556 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:48:52,556 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:48:52,556 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:48:52,557 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,557 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:48:52,557 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:48:52,557 INFO L132 ssoRankerPreferences]: Filename of dumped script: me0.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:48:52,557 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:48:52,557 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:48:52,557 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:48:52,575 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:48:52,575 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:48:52,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,577 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 22:48:52,579 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 22:48:52,580 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 22:48:52,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:48:52,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:48:52,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:48:52,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:48:52,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:48:52,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:48:52,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:48:52,593 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:48:52,596 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:48:52,596 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:48:52,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:48:52,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:48:52,617 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 22:48:52,619 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 22:48:52,620 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:48:52,620 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:48:52,620 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:48:52,620 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-02-17 22:48:52,625 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 22:48:52,626 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:48:52,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:48:52,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:48:52,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:48:52,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:52,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:48:52,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:52,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:48:52,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:48:52,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:48:52,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:48:52,650 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:48:52,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:48:52,661 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 22:48:52,662 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 22:48:52,662 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 93 transitions. cyclomatic complexity: 59 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:48:52,683 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 93 transitions. cyclomatic complexity: 59. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 58 states and 109 transitions. Complement of second has 6 states. [2025-02-17 22:48:52,683 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 22:48:52,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:48:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2025-02-17 22:48:52,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:48:52,684 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:52,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 2 letters. [2025-02-17 22:48:52,684 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:52,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 4 letters. [2025-02-17 22:48:52,684 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:48:52,684 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 109 transitions. [2025-02-17 22:48:52,685 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 10 [2025-02-17 22:48:52,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 42 states and 83 transitions. [2025-02-17 22:48:52,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2025-02-17 22:48:52,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2025-02-17 22:48:52,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 83 transitions. [2025-02-17 22:48:52,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:48:52,686 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 83 transitions. [2025-02-17 22:48:52,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 83 transitions. [2025-02-17 22:48:52,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-02-17 22:48:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 41 states have internal predecessors, (83), 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 22:48:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 83 transitions. [2025-02-17 22:48:52,690 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 83 transitions. [2025-02-17 22:48:52,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:48:52,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:48:52,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:48:52,692 INFO L87 Difference]: Start difference. First operand 42 states and 83 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 22:48:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:48:52,696 INFO L93 Difference]: Finished difference Result 11 states and 18 transitions. [2025-02-17 22:48:52,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 18 transitions. [2025-02-17 22:48:52,696 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:52,696 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2025-02-17 22:48:52,696 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:48:52,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:48:52,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:48:52,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:48:52,696 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:52,696 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:48:52,699 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:48:52,699 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:48:52,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:48:52,699 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:48:52,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:48:52,704 INFO L201 PluginConnector]: Adding new model me0.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:48:52 BoogieIcfgContainer [2025-02-17 22:48:52,705 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:48:52,705 INFO L158 Benchmark]: Toolchain (without parser) took 1963.97ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 86.6MB in the beginning and 63.9MB in the end (delta: 22.7MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2025-02-17 22:48:52,705 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.21ms. Allocated memory is still 155.2MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:52,705 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.98ms. Allocated memory is still 155.2MB. Free memory was 86.6MB in the beginning and 85.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:52,706 INFO L158 Benchmark]: Boogie Preprocessor took 11.29ms. Allocated memory is still 155.2MB. Free memory was 85.3MB in the beginning and 84.6MB in the end (delta: 730.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:48:52,706 INFO L158 Benchmark]: RCFGBuilder took 152.59ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 74.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:48:52,706 INFO L158 Benchmark]: BuchiAutomizer took 1778.82ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 74.7MB in the beginning and 63.9MB in the end (delta: 10.8MB). Peak memory consumption was 1.9MB. Max. memory is 8.0GB. [2025-02-17 22:48:52,707 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 0.21ms. Allocated memory is still 155.2MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.98ms. Allocated memory is still 155.2MB. Free memory was 86.6MB in the beginning and 85.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 11.29ms. Allocated memory is still 155.2MB. Free memory was 85.3MB in the beginning and 84.6MB in the end (delta: 730.3kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 152.59ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 74.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1778.82ms. Allocated memory was 155.2MB in the beginning and 142.6MB in the end (delta: -12.6MB). Free memory was 74.7MB in the beginning and 63.9MB in the end (delta: 10.8MB). Peak memory consumption was 1.9MB. 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 -1 * x1 + z and consists of 4 locations. One deterministic module has affine ranking function x1 + -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * x1 + z and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 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 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 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, 58 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 74 IncrementalHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 33 mSDtfsCounter, 74 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 85ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.2s InitialAbstraction: Time to compute Ample Reduction [ms]: 262, Trivial Ample Sets caused by loops: 6, Number of non-trivial ample sets: 19, Number of pruned transitions: 13, Number of transitions in reduction automaton: 60, Number of states in reduction automaton: 38, Underlying: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:48:52,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-17 22:48:52,919 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 22:48:53,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...