/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i /storage/cav23-termute-examples/4_plus_thr/4thr_2groups.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:50,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:50,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:50,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:50,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:50,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:50,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:50,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:50,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:50,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:50,607 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:50,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:50,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:50,608 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:50,608 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:50,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:50,608 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:50,608 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:50,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:50,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:50,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:50,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:50,608 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:50,608 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:50,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:50,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:50,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:50,872 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:50,873 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:50,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/4thr_2groups.c.bpl [2025-02-17 22:45:50,876 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/4thr_2groups.c.bpl' [2025-02-17 22:45:50,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:50,895 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:50,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:50,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:50,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:50,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,914 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:50,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:50,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:50,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:50,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:50,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,925 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [2025-02-17 22:45:50,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:50,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:50,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:50,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:50,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/1) ... [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 22:45:50,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:50,965 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 22:45:50,968 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 22:45:50,988 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:50,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:50,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:50,989 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:50,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:50,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:50,989 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:45:50,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:45:50,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:45:50,989 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:50,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:50,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:50,989 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:45:50,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:45:50,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:45:50,990 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 22:45:51,025 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:51,027 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:51,080 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:51,080 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:51,087 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:51,087 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:51,088 INFO L201 PluginConnector]: Adding new model 4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:51 BoogieIcfgContainer [2025-02-17 22:45:51,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:51,088 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:51,088 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:51,092 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:51,092 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:51,092 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:50" (1/2) ... [2025-02-17 22:45:51,093 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4155dd8c and model type 4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:51, skipping insertion in model container [2025-02-17 22:45:51,093 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:51,093 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:51" (2/2) ... [2025-02-17 22:45:51,094 INFO L363 chiAutomizerObserver]: Analyzing ICFG 4thr_2groups.c.bpl [2025-02-17 22:45:51,160 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:45:51,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 98 flow [2025-02-17 22:45:51,216 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-02-17 22:45:51,217 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:45:51,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 27 events. 4/27 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-17 22:45:51,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 98 flow [2025-02-17 22:45:51,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 78 flow [2025-02-17 22:45:51,236 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:51,237 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:51,237 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:51,237 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:51,237 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:51,238 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:51,238 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:51,238 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:51,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:51,404 INFO L131 ngComponentsAnalysis]: Automaton has 115 accepting balls. 585 [2025-02-17 22:45:51,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:51,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:51,408 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:45:51,408 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:51,408 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:51,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 631 states, but on-demand construction may add more states [2025-02-17 22:45:51,426 INFO L131 ngComponentsAnalysis]: Automaton has 115 accepting balls. 585 [2025-02-17 22:45:51,426 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:51,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:51,444 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-17 22:45:51,444 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:51,449 INFO L752 eck$LassoCheckResult]: Stem: "[86] $Ultimate##0-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:51,449 INFO L754 eck$LassoCheckResult]: Loop: "[67] L25-->L27: 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[]" "[69] L27-->L25: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:45:51,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:51,453 INFO L85 PathProgramCache]: Analyzing trace with hash 117, now seen corresponding path program 1 times [2025-02-17 22:45:51,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:51,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168259936] [2025-02-17 22:45:51,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:51,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:45:51,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:45:51,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:51,510 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:51,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:45:51,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:45:51,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:51,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:51,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:51,532 INFO L85 PathProgramCache]: Analyzing trace with hash 3107, now seen corresponding path program 1 times [2025-02-17 22:45:51,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:51,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826369533] [2025-02-17 22:45:51,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:51,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:51,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:51,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:51,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:51,546 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:51,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:51,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:51,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:51,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:51,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash 114583, now seen corresponding path program 1 times [2025-02-17 22:45:51,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:51,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574403251] [2025-02-17 22:45:51,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:51,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:51,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:51,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:51,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:51,558 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:51,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:51,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:51,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:51,566 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:51,619 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:51,620 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:51,620 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:51,620 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:51,620 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:51,621 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:51,621 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:51,621 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:51,621 INFO L132 ssoRankerPreferences]: Filename of dumped script: 4thr_2groups.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:51,621 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:51,621 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:51,630 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:51,679 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:51,680 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:51,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:51,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:51,683 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 22:45:51,684 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 22:45:51,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:51,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:51,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-17 22:45:51,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:51,708 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 22:45:51,709 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 22:45:51,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:51,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:51,785 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:51,789 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 22:45:51,790 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:51,790 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:51,790 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:51,790 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:51,790 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:51,790 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:51,790 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:51,790 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:51,790 INFO L132 ssoRankerPreferences]: Filename of dumped script: 4thr_2groups.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:51,790 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:51,790 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:51,791 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:51,820 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:51,823 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:51,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:51,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:51,825 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 22:45:51,828 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 22:45:51,829 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 22:45:51,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:51,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:51,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:51,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:51,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:51,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:51,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:51,847 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:51,853 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:51,853 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:51,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:51,856 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 22:45:51,861 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 22:45:51,861 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:51,862 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:51,862 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:51,862 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x1, z) = -1*x1 + 1*z Supporting invariants [] [2025-02-17 22:45:51,868 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 22:45:51,870 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:51,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:51,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-17 22:45:51,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-17 22:45:51,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:51,895 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:51,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:51,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:51,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:51,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:51,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:51,903 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:51,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:51,921 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 22:45:51,970 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 22:45:51,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:51,973 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 631 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 22:45:52,220 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 631 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 2112 states and 9032 transitions. Complement of second has 6 states. [2025-02-17 22:45:52,222 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 22:45:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 22:45:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-02-17 22:45:52,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 65 transitions. Stem has 1 letters. Loop has 2 letters. [2025-02-17 22:45:52,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:52,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 65 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:45:52,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:52,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 65 transitions. Stem has 1 letters. Loop has 4 letters. [2025-02-17 22:45:52,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:52,239 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2112 states and 9032 transitions. [2025-02-17 22:45:52,273 INFO L131 ngComponentsAnalysis]: Automaton has 155 accepting balls. 645 [2025-02-17 22:45:52,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2112 states to 1593 states and 6846 transitions. [2025-02-17 22:45:52,305 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 687 [2025-02-17 22:45:52,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1098 [2025-02-17 22:45:52,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1593 states and 6846 transitions. [2025-02-17 22:45:52,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:52,313 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1593 states and 6846 transitions. [2025-02-17 22:45:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states and 6846 transitions. [2025-02-17 22:45:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1184. [2025-02-17 22:45:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1184 states have (on average 4.41554054054054) internal successors, (5228), 1183 states have internal predecessors, (5228), 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 22:45:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 5228 transitions. [2025-02-17 22:45:52,399 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1184 states and 5228 transitions. [2025-02-17 22:45:52,399 INFO L432 stractBuchiCegarLoop]: Abstraction has 1184 states and 5228 transitions. [2025-02-17 22:45:52,399 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:52,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1184 states and 5228 transitions. [2025-02-17 22:45:52,407 INFO L131 ngComponentsAnalysis]: Automaton has 155 accepting balls. 645 [2025-02-17 22:45:52,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:52,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:52,408 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:52,408 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:52,409 INFO L752 eck$LassoCheckResult]: Stem: "[86] $Ultimate##0-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[89] L12-->L34: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:45:52,409 INFO L754 eck$LassoCheckResult]: Loop: "[71] L34-->L36: Formula: (< v_x2_1 v_z_3) InVars {x2=v_x2_1, z=v_z_3} OutVars{x2=v_x2_1, z=v_z_3} AuxVars[] AssignedVars[]" "[73] L36-->L37: Formula: (= v_x2_2 (+ v_x2_3 1)) InVars {x2=v_x2_3} OutVars{x2=v_x2_2} AuxVars[] AssignedVars[x2]" "[74] L37-->L34: Formula: (= v_x1_5 (+ v_x1_6 1)) InVars {x1=v_x1_6} OutVars{x1=v_x1_5} AuxVars[] AssignedVars[x1]" [2025-02-17 22:45:52,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:52,409 INFO L85 PathProgramCache]: Analyzing trace with hash 3716, now seen corresponding path program 1 times [2025-02-17 22:45:52,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:52,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75706023] [2025-02-17 22:45:52,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:52,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:52,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:52,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:52,414 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:52,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:52,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:52,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:52,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:52,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash 100359, now seen corresponding path program 1 times [2025-02-17 22:45:52,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:52,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492250998] [2025-02-17 22:45:52,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:52,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:52,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:52,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:52,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:52,426 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:52,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:52,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:52,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:52,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:52,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:52,431 INFO L85 PathProgramCache]: Analyzing trace with hash 110773924, now seen corresponding path program 1 times [2025-02-17 22:45:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:52,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014278674] [2025-02-17 22:45:52,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:52,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:52,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:52,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:52,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:52,437 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:52,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:52,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:52,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:52,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:52,470 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:52,470 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:52,470 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:52,470 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:52,470 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:52,471 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,471 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:52,471 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:52,471 INFO L132 ssoRankerPreferences]: Filename of dumped script: 4thr_2groups.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:52,471 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:52,471 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:52,471 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:52,478 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:52,512 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:52,512 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:52,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:52,514 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 22:45:52,516 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 22:45:52,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:52,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:52,534 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 22:45:52,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:52,536 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 22:45:52,538 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 22:45:52,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:52,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:52,604 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:52,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:52,609 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:52,609 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:52,609 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:52,609 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:52,609 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:52,609 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,609 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:52,609 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:52,609 INFO L132 ssoRankerPreferences]: Filename of dumped script: 4thr_2groups.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:52,609 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:52,609 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:52,610 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:52,618 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:52,649 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:52,649 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:52,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:52,652 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 22:45:52,653 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 22:45:52,654 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 22:45:52,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:52,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:52,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:52,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:52,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:52,666 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:52,666 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:52,670 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:52,673 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:52,673 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:52,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:52,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:52,675 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 22:45:52,677 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 22:45:52,678 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:52,678 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:52,678 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:52,678 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x2, z) = -1*x2 + 1*z Supporting invariants [] [2025-02-17 22:45:52,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:52,685 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:52,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:52,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:52,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:52,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:52,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:52,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:52,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:52,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:52,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:52,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:52,712 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:52,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:52,758 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 22:45:52,759 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:45:52,759 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1184 states and 5228 transitions. cyclomatic complexity: 4243 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:52,877 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 22:45:52,907 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1184 states and 5228 transitions. cyclomatic complexity: 4243. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 3280 states and 14781 transitions. Complement of second has 6 states. [2025-02-17 22:45:52,908 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 22:45:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2025-02-17 22:45:52,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 64 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-17 22:45:52,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:52,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 64 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-17 22:45:52,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:52,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 64 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-17 22:45:52,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:52,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3280 states and 14781 transitions. [2025-02-17 22:45:52,941 INFO L131 ngComponentsAnalysis]: Automaton has 181 accepting balls. 549 [2025-02-17 22:45:52,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3280 states to 2330 states and 10543 transitions. [2025-02-17 22:45:52,967 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 859 [2025-02-17 22:45:52,971 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1110 [2025-02-17 22:45:52,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2330 states and 10543 transitions. [2025-02-17 22:45:52,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:52,971 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2330 states and 10543 transitions. [2025-02-17 22:45:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states and 10543 transitions. [2025-02-17 22:45:53,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2081. [2025-02-17 22:45:53,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 2081 states have (on average 4.59106198942816) internal successors, (9554), 2080 states have internal predecessors, (9554), 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 22:45:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 9554 transitions. [2025-02-17 22:45:53,023 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2081 states and 9554 transitions. [2025-02-17 22:45:53,023 INFO L432 stractBuchiCegarLoop]: Abstraction has 2081 states and 9554 transitions. [2025-02-17 22:45:53,023 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:45:53,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2081 states and 9554 transitions. [2025-02-17 22:45:53,034 INFO L131 ngComponentsAnalysis]: Automaton has 181 accepting balls. 549 [2025-02-17 22:45:53,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:53,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:53,034 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:45:53,034 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:53,035 INFO L752 eck$LassoCheckResult]: Stem: "[86] $Ultimate##0-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[89] L12-->L34: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[92] L13-->L44: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:45:53,035 INFO L754 eck$LassoCheckResult]: Loop: "[76] L44-->L46: Formula: (< v_x3_1 v_z_5) InVars {x3=v_x3_1, z=v_z_5} OutVars{x3=v_x3_1, z=v_z_5} AuxVars[] AssignedVars[]" "[78] L46-->L44: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:45:53,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:53,035 INFO L85 PathProgramCache]: Analyzing trace with hash 115288, now seen corresponding path program 1 times [2025-02-17 22:45:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:53,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002309501] [2025-02-17 22:45:53,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:53,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:53,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:53,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,038 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:53,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:53,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:53,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:53,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash 3395, now seen corresponding path program 1 times [2025-02-17 22:45:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:53,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337357093] [2025-02-17 22:45:53,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:53,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:53,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:53,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,043 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:53,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:53,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:53,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:53,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash 110794202, now seen corresponding path program 1 times [2025-02-17 22:45:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:53,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919022457] [2025-02-17 22:45:53,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:53,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:53,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:53,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:53,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,048 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:53,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:53,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:53,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:53,082 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:53,083 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:53,083 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:53,083 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:53,083 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:53,083 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:53,083 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:53,083 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:53,083 INFO L132 ssoRankerPreferences]: Filename of dumped script: 4thr_2groups.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:53,083 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:53,083 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:53,083 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:53,103 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:53,103 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:53,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:53,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:53,105 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 22:45:53,105 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 22:45:53,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:53,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:53,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-17 22:45:53,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:53,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:53,123 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 22:45:53,125 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 22:45:53,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:53,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:53,192 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:53,196 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 22:45:53,197 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:53,197 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:53,197 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:53,197 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:53,197 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:53,197 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:53,197 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:53,197 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:53,197 INFO L132 ssoRankerPreferences]: Filename of dumped script: 4thr_2groups.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:45:53,197 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:53,197 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:53,198 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:53,215 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:53,215 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:53,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:53,217 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 22:45:53,220 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 22:45:53,220 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 22:45:53,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:53,231 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:53,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:53,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:53,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:53,233 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:53,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:53,235 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:53,238 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:53,239 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:53,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:53,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:53,241 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 22:45:53,243 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 22:45:53,244 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:53,244 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:53,244 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:53,244 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:45:53,249 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 22:45:53,250 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:53,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:53,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:53,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:53,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:53,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:53,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:53,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:53,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:53,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:53,284 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:53,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:53,301 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 22:45:53,301 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 22:45:53,301 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2081 states and 9554 transitions. cyclomatic complexity: 7792 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:53,482 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2081 states and 9554 transitions. cyclomatic complexity: 7792. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 7800 states and 37234 transitions. Complement of second has 6 states. [2025-02-17 22:45:53,485 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 22:45:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-02-17 22:45:53,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:45:53,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:53,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:45:53,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:53,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 72 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:45:53,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:53,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7800 states and 37234 transitions. [2025-02-17 22:45:53,561 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 22:45:53,609 INFO L131 ngComponentsAnalysis]: Automaton has 125 accepting balls. 375 [2025-02-17 22:45:53,658 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7800 states to 4146 states and 19670 transitions. [2025-02-17 22:45:53,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1106 [2025-02-17 22:45:53,662 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1402 [2025-02-17 22:45:53,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4146 states and 19670 transitions. [2025-02-17 22:45:53,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:53,662 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4146 states and 19670 transitions. [2025-02-17 22:45:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states and 19670 transitions. [2025-02-17 22:45:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 3664. [2025-02-17 22:45:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3664 states have (on average 4.859989082969432) internal successors, (17807), 3663 states have internal predecessors, (17807), 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 22:45:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 17807 transitions. [2025-02-17 22:45:53,787 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3664 states and 17807 transitions. [2025-02-17 22:45:53,787 INFO L432 stractBuchiCegarLoop]: Abstraction has 3664 states and 17807 transitions. [2025-02-17 22:45:53,787 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:45:53,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3664 states and 17807 transitions. [2025-02-17 22:45:53,811 INFO L131 ngComponentsAnalysis]: Automaton has 125 accepting balls. 375 [2025-02-17 22:45:53,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:53,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:53,812 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:45:53,812 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-17 22:45:53,812 INFO L752 eck$LassoCheckResult]: Stem: "[86] $Ultimate##0-->L25: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[89] L12-->L34: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[92] L13-->L44: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[95] L14-->L53: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-02-17 22:45:53,812 INFO L754 eck$LassoCheckResult]: Loop: "[80] L53-->L55: Formula: (< v_x4_1 v_z_7) InVars {x4=v_x4_1, z=v_z_7} OutVars{x4=v_x4_1, z=v_z_7} AuxVars[] AssignedVars[]" "[82] L55-->L56: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" "[83] L56-->L53: Formula: (= (+ v_x3_6 1) v_x3_5) InVars {x3=v_x3_6} OutVars{x3=v_x3_5} AuxVars[] AssignedVars[x3]" [2025-02-17 22:45:53,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 3574023, now seen corresponding path program 1 times [2025-02-17 22:45:53,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:53,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297701516] [2025-02-17 22:45:53,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:53,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:53,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:53,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:53,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,820 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:53,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:53,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:53,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,826 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:53,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 109296, now seen corresponding path program 1 times [2025-02-17 22:45:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016420886] [2025-02-17 22:45:53,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:53,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:53,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:53,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,831 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:53,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:53,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:53,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:53,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:53,839 INFO L85 PathProgramCache]: Analyzing trace with hash -900383702, now seen corresponding path program 1 times [2025-02-17 22:45:53,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:53,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792534776] [2025-02-17 22:45:53,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:53,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:53,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:45:53,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:45:53,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,846 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:53,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:45:53,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:45:53,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:53,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:53,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:53,879 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:53,879 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:53,879 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:53,879 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:53,879 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:53,879 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:53,879 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:53,879 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:53,879 INFO L132 ssoRankerPreferences]: Filename of dumped script: 4thr_2groups.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:45:53,879 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:53,879 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:53,880 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:53,889 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:53,909 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:53,909 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:53,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:53,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:53,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:53,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-17 22:45:53,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:53,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:53,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:53,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:53,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:53,934 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:53,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-17 22:45:53,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:53,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:54,002 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:54,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-17 22:45:54,007 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:54,007 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:54,007 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:54,007 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:54,007 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:54,007 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,007 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:54,007 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:54,007 INFO L132 ssoRankerPreferences]: Filename of dumped script: 4thr_2groups.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:45:54,007 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:54,007 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:54,008 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:54,013 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:54,036 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:54,036 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:54,039 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:54,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-17 22:45:54,041 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 22:45:54,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:54,051 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:54,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:54,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:54,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:54,053 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:54,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:54,054 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:54,058 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:54,058 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:54,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:54,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:54,060 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:45:54,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-17 22:45:54,062 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:54,062 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:54,062 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:54,062 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x4) = 1*z - 1*x4 Supporting invariants [] [2025-02-17 22:45:54,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-17 22:45:54,069 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:54,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:54,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:54,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:54,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:54,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:54,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:54,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:54,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:54,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:54,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:54,106 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:54,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:54,141 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 22:45:54,141 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-17 22:45:54,142 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3664 states and 17807 transitions. cyclomatic complexity: 14485 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:54,312 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3664 states and 17807 transitions. cyclomatic complexity: 14485. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10030 states and 49673 transitions. Complement of second has 6 states. [2025-02-17 22:45:54,312 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 22:45:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2025-02-17 22:45:54,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 70 transitions. Stem has 4 letters. Loop has 3 letters. [2025-02-17 22:45:54,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:54,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 70 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-17 22:45:54,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:54,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 70 transitions. Stem has 4 letters. Loop has 6 letters. [2025-02-17 22:45:54,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:54,315 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10030 states and 49673 transitions. [2025-02-17 22:45:54,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-17 22:45:54,466 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:54,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10030 states to 0 states and 0 transitions. [2025-02-17 22:45:54,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:45:54,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:45:54,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:45:54,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:45:54,467 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:54,467 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:54,467 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:45:54,467 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:45:54,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:45:54,467 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:45:54,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:45:54,475 INFO L201 PluginConnector]: Adding new model 4thr_2groups.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:45:54 BoogieIcfgContainer [2025-02-17 22:45:54,475 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:45:54,476 INFO L158 Benchmark]: Toolchain (without parser) took 3580.08ms. Allocated memory was 159.4MB in the beginning and 230.7MB in the end (delta: 71.3MB). Free memory was 85.4MB in the beginning and 79.7MB in the end (delta: 5.7MB). Peak memory consumption was 78.5MB. Max. memory is 8.0GB. [2025-02-17 22:45:54,476 INFO L158 Benchmark]: Boogie PL CUP Parser took 1.74ms. Allocated memory is still 159.4MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:54,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.31ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:54,477 INFO L158 Benchmark]: Boogie Preprocessor took 12.24ms. Allocated memory is still 159.4MB. Free memory was 84.2MB in the beginning and 83.5MB in the end (delta: 695.6kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:45:54,477 INFO L158 Benchmark]: RCFGBuilder took 157.96ms. Allocated memory is still 159.4MB. Free memory was 83.4MB in the beginning and 74.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-02-17 22:45:54,477 INFO L158 Benchmark]: BuchiAutomizer took 3386.43ms. Allocated memory was 159.4MB in the beginning and 230.7MB in the end (delta: 71.3MB). Free memory was 74.5MB in the beginning and 79.7MB in the end (delta: -5.1MB). Peak memory consumption was 70.1MB. Max. memory is 8.0GB. [2025-02-17 22:45:54,478 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 1.74ms. Allocated memory is still 159.4MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.31ms. Allocated memory is still 159.4MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 12.24ms. Allocated memory is still 159.4MB. Free memory was 84.2MB in the beginning and 83.5MB in the end (delta: 695.6kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 157.96ms. Allocated memory is still 159.4MB. Free memory was 83.4MB in the beginning and 74.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3386.43ms. Allocated memory was 159.4MB in the beginning and 230.7MB in the end (delta: 71.3MB). Free memory was 74.5MB in the beginning and 79.7MB in the end (delta: -5.1MB). Peak memory consumption was 70.1MB. 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 (0 trivial, 4 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 z + -1 * x2 and consists of 4 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 4 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.3s AutomataMinimizationTime, 3 MinimizatonAttempts, 1140 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.4s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 178 mSDsluCounter, 184 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 244 IncrementalHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 88 mSDtfsCounter, 244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s 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 22:45:54,492 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...