/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/3_thr/me1-1p2c.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:49,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:49,128 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:49,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:49,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:49,154 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:49,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:49,155 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:49,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:49,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:49,156 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:49,156 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:49,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:49,157 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:49,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:49,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:49,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:49,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:49,158 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:49,158 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:49,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:49,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:49,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:49,399 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:49,399 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:49,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/3_thr/me1-1p2c.c.bpl [2025-02-17 22:45:49,401 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/3_thr/me1-1p2c.c.bpl' [2025-02-17 22:45:49,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:49,419 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:49,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:49,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:49,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:49,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,437 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:49,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:49,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:49,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:49,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:49,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,447 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:49,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:49,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:49,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:49,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/1) ... [2025-02-17 22:45:49,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:49,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:49,491 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 22:45:49,494 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 22:45:49,516 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:49,516 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:49,516 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:45:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:45:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:45:49,516 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:49,517 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 22:45:49,553 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:49,555 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:49,635 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:49,635 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:49,654 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:49,654 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:49,657 INFO L201 PluginConnector]: Adding new model me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:49 BoogieIcfgContainer [2025-02-17 22:45:49,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:49,658 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:49,658 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:49,663 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:49,663 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:49,663 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:49" (1/2) ... [2025-02-17 22:45:49,665 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53a68edb and model type me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:49, skipping insertion in model container [2025-02-17 22:45:49,665 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:49,665 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:49" (2/2) ... [2025-02-17 22:45:49,666 INFO L363 chiAutomizerObserver]: Analyzing ICFG me1-1p2c.c.bpl [2025-02-17 22:45:49,723 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-17 22:45:49,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 79 flow [2025-02-17 22:45:49,780 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2025-02-17 22:45:49,782 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-17 22:45:49,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 23 events. 3/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2025-02-17 22:45:49,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 79 flow [2025-02-17 22:45:49,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2025-02-17 22:45:49,801 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:49,801 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:49,802 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:49,802 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:49,802 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:49,802 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:49,802 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:49,802 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:49,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:49,877 INFO L131 ngComponentsAnalysis]: Automaton has 53 accepting balls. 134 [2025-02-17 22:45:49,878 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:49,878 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:49,882 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:49,882 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:49,882 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:49,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 188 states, but on-demand construction may add more states [2025-02-17 22:45:49,891 INFO L131 ngComponentsAnalysis]: Automaton has 53 accepting balls. 134 [2025-02-17 22:45:49,891 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:49,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:49,891 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:49,891 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:49,897 INFO L752 eck$LassoCheckResult]: Stem: "[54] $Ultimate##0-->L14: Formula: (and (= v_g_5 0) (= v_f_1 0)) InVars {g=v_g_5, f=v_f_1} OutVars{g=v_g_5, f=v_f_1} AuxVars[] AssignedVars[]" "[78] L14-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:49,898 INFO L754 eck$LassoCheckResult]: Loop: "[62] L25-->L27: Formula: (< v_x2_1 v_z2_1) InVars {z2=v_z2_1, x2=v_x2_1} OutVars{z2=v_z2_1, x2=v_x2_1} AuxVars[] AssignedVars[]" "[64] L27-->L25: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" [2025-02-17 22:45:49,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2713, now seen corresponding path program 1 times [2025-02-17 22:45:49,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:49,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051757567] [2025-02-17 22:45:49,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:49,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:49,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:49,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:49,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:49,965 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:49,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:49,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:49,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:49,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:49,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:49,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2947, now seen corresponding path program 1 times [2025-02-17 22:45:49,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:49,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577439130] [2025-02-17 22:45:49,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:49,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:49,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:49,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:49,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:49,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:49,995 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:49,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:50,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:50,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:50,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:50,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2609179, now seen corresponding path program 1 times [2025-02-17 22:45:50,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:50,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136812351] [2025-02-17 22:45:50,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:50,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:50,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:50,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:50,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:50,018 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:50,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:50,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:50,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:50,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:50,083 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:50,084 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:50,084 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:50,084 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:50,084 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:50,084 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,087 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:50,087 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:50,087 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:50,088 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:50,088 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:50,098 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:50,136 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:50,136 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:50,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,140 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 22:45:50,142 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 22:45:50,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:50,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:50,163 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 22:45:50,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,167 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 22:45:50,168 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 22:45:50,169 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:50,169 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:50,235 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:50,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-17 22:45:50,240 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:50,240 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:50,240 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:50,240 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:50,240 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:50,240 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,240 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:50,240 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:50,240 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:50,240 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:50,240 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:50,241 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:50,269 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:50,272 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:50,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,276 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 22:45:50,277 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 22:45:50,278 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 22:45:50,291 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:50,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:50,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:50,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:50,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:50,301 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:50,301 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:50,304 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:50,309 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:50,309 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:50,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,314 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 22:45:50,316 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 22:45:50,316 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:50,316 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:50,317 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:50,317 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z2, x2) = 1*z2 - 1*x2 Supporting invariants [] [2025-02-17 22:45:50,322 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 22:45:50,327 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:50,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:50,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:50,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:50,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:50,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:50,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:50,389 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 22:45:50,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:50,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:50,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:50,394 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:50,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:50,425 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 22:45:50,462 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 22:45:50,465 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 188 states, but on-demand construction may add more states 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 22:45:50,633 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 188 states, but on-demand construction may add more states. 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 676 states and 2053 transitions. Complement of second has 7 states. [2025-02-17 22:45:50,635 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 22:45:50,638 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 22:45:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2025-02-17 22:45:50,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:45:50,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:50,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:45:50,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:50,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:45:50,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:50,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 676 states and 2053 transitions. [2025-02-17 22:45:50,666 INFO L131 ngComponentsAnalysis]: Automaton has 50 accepting balls. 128 [2025-02-17 22:45:50,678 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 676 states to 479 states and 1487 transitions. [2025-02-17 22:45:50,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 309 [2025-02-17 22:45:50,684 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 399 [2025-02-17 22:45:50,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 479 states and 1487 transitions. [2025-02-17 22:45:50,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:50,685 INFO L218 hiAutomatonCegarLoop]: Abstraction has 479 states and 1487 transitions. [2025-02-17 22:45:50,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states and 1487 transitions. [2025-02-17 22:45:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 297. [2025-02-17 22:45:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 297 states have (on average 3.1986531986531985) internal successors, (950), 296 states have internal predecessors, (950), 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 22:45:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 950 transitions. [2025-02-17 22:45:50,727 INFO L240 hiAutomatonCegarLoop]: Abstraction has 297 states and 950 transitions. [2025-02-17 22:45:50,727 INFO L432 stractBuchiCegarLoop]: Abstraction has 297 states and 950 transitions. [2025-02-17 22:45:50,727 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:50,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 297 states and 950 transitions. [2025-02-17 22:45:50,732 INFO L131 ngComponentsAnalysis]: Automaton has 50 accepting balls. 128 [2025-02-17 22:45:50,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:50,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:50,732 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:45:50,732 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:50,733 INFO L752 eck$LassoCheckResult]: Stem: "[54] $Ultimate##0-->L14: Formula: (and (= v_g_5 0) (= v_f_1 0)) InVars {g=v_g_5, f=v_f_1} OutVars{g=v_g_5, f=v_f_1} AuxVars[] AssignedVars[]" "[78] L14-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[81] L14-1-->$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]" "[66] $Ultimate##0-->L38-1: Formula: (< 0 v_g_3) InVars {g=v_g_3} OutVars{g=v_g_3} AuxVars[] AssignedVars[]" "[61] L25-->L29: Formula: (<= v_z2_2 v_x2_4) InVars {z2=v_z2_2, x2=v_x2_4} OutVars{z2=v_z2_2, x2=v_x2_4} AuxVars[] AssignedVars[]" [2025-02-17 22:45:50,733 INFO L754 eck$LassoCheckResult]: Loop: "[68] L38-1-->L38: Formula: (< v_y2_2 v_x2_6) InVars {y2=v_y2_2, x2=v_x2_6} OutVars{y2=v_y2_2, x2=v_x2_6} AuxVars[] AssignedVars[]" "[70] L38-->L38-1: Formula: (and (< v_y2_7 v_x2_16) (= (+ v_x2_15 1) v_x2_16)) InVars {y2=v_y2_7, x2=v_x2_16} OutVars{y2=v_y2_7, x2=v_x2_15} AuxVars[] AssignedVars[x2]" [2025-02-17 22:45:50,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash 80902931, now seen corresponding path program 1 times [2025-02-17 22:45:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:50,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757096323] [2025-02-17 22:45:50,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:50,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:50,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:50,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:50,766 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 22:45:50,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:45:50,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757096323] [2025-02-17 22:45:50,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757096323] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:45:50,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:45:50,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:45:50,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140436357] [2025-02-17 22:45:50,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:45:50,770 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:45:50,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:50,771 INFO L85 PathProgramCache]: Analyzing trace with hash 3139, now seen corresponding path program 1 times [2025-02-17 22:45:50,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:50,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395754285] [2025-02-17 22:45:50,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:50,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:50,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:50,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:50,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:50,778 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:50,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:50,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:50,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:50,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:50,799 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:50,799 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:50,799 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:50,799 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:50,799 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:50,799 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,799 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:50,799 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:50,799 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:50,799 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:50,799 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:50,800 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:50,816 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:50,816 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:50,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,818 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 22:45:50,819 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 22:45:50,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:50,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:50,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-17 22:45:50,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,838 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 22:45:50,839 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 22:45:50,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:50,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:50,915 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:50,919 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 22:45:50,919 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:50,919 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:50,919 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:50,919 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:50,919 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:50,919 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,919 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:50,919 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:50,919 INFO L132 ssoRankerPreferences]: Filename of dumped script: me1-1p2c.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:50,919 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:50,919 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:50,920 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:50,936 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:50,936 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:50,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,938 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 22:45:50,939 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 22:45:50,940 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 22:45:50,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:50,950 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:50,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:50,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:50,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:50,951 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:50,951 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:50,954 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:50,958 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:50,958 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:50,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:50,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,960 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 22:45:50,961 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 22:45:50,962 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:50,962 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:50,962 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:50,962 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, y2) = 1*x2 - 1*y2 Supporting invariants [] [2025-02-17 22:45:50,967 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 22:45:50,968 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:50,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:50,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:50,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:50,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:50,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:50,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:50,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:50,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:50,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:50,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:50,997 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:50,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:51,009 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 22:45:51,010 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 22:45:51,010 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 297 states and 950 transitions. cyclomatic complexity: 730 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:51,073 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 297 states and 950 transitions. cyclomatic complexity: 730. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 687 states and 2054 transitions. Complement of second has 7 states. [2025-02-17 22:45:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2025-02-17 22:45:51,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 74 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:45:51,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:51,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 74 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:45:51,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:51,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 74 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:45:51,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:51,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 687 states and 2054 transitions. [2025-02-17 22:45:51,080 INFO L131 ngComponentsAnalysis]: Automaton has 18 accepting balls. 56 [2025-02-17 22:45:51,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 687 states to 192 states and 590 transitions. [2025-02-17 22:45:51,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 112 [2025-02-17 22:45:51,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 112 [2025-02-17 22:45:51,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 192 states and 590 transitions. [2025-02-17 22:45:51,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:51,082 INFO L218 hiAutomatonCegarLoop]: Abstraction has 192 states and 590 transitions. [2025-02-17 22:45:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states and 590 transitions. [2025-02-17 22:45:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2025-02-17 22:45:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 192 states have (on average 3.0729166666666665) internal successors, (590), 191 states have internal predecessors, (590), 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 22:45:51,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 590 transitions. [2025-02-17 22:45:51,088 INFO L240 hiAutomatonCegarLoop]: Abstraction has 192 states and 590 transitions. [2025-02-17 22:45:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:45:51,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-17 22:45:51,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-17 22:45:51,090 INFO L87 Difference]: Start difference. First operand 192 states and 590 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:51,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:45:51,095 INFO L93 Difference]: Finished difference Result 16 states and 29 transitions. [2025-02-17 22:45:51,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 29 transitions. [2025-02-17 22:45:51,096 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:51,096 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2025-02-17 22:45:51,096 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:51,096 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:51,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:51,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:51,096 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:51,096 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-17 22:45:51,097 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:51,097 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:45:51,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:45:51,097 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:51,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:45:51,101 INFO L201 PluginConnector]: Adding new model me1-1p2c.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:45:51 BoogieIcfgContainer [2025-02-17 22:45:51,102 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:45:51,102 INFO L158 Benchmark]: Toolchain (without parser) took 1683.39ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 85.4MB in the beginning and 64.3MB in the end (delta: 21.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2025-02-17 22:45:51,102 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:51,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.57ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:51,103 INFO L158 Benchmark]: Boogie Preprocessor took 13.30ms. Allocated memory is still 159.4MB. Free memory was 84.0MB in the beginning and 83.3MB in the end (delta: 697.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:51,103 INFO L158 Benchmark]: RCFGBuilder took 203.03ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 74.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:45:51,103 INFO L158 Benchmark]: BuchiAutomizer took 1443.45ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.1MB in the beginning and 64.3MB in the end (delta: 9.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2025-02-17 22:45:51,104 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 0.16ms. Allocated memory is still 159.4MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.57ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 13.30ms. Allocated memory is still 159.4MB. Free memory was 84.0MB in the beginning and 83.3MB in the end (delta: 697.3kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 203.03ms. Allocated memory is still 159.4MB. Free memory was 83.3MB in the beginning and 74.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 1443.45ms. Allocated memory was 159.4MB in the beginning and 155.2MB in the end (delta: -4.2MB). Free memory was 74.1MB in the beginning and 64.3MB in the end (delta: 9.8MB). Peak memory consumption was 11.5MB. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function z2 + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y2 + x2 and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 182 StatesRemovedByMinimization, 1 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 39 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 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: 43ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s InitialAbstraction: - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-17 22:45:51,112 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 22:45:51,316 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...