/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/bb7.c.bpl -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-601be74-m [2025-02-17 22:45:54,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-17 22:45:54,775 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-02-17 22:45:54,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-17 22:45:54,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-17 22:45:54,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-17 22:45:54,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-17 22:45:54,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-17 22:45:54,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-17 22:45:54,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-17 22:45:54,798 INFO L153 SettingsManager]: * Use SBE=true [2025-02-17 22:45:54,798 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-17 22:45:54,798 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-17 22:45:54,798 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-17 22:45:54,798 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-17 22:45:54,798 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-17 22:45:54,798 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-17 22:45:54,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-17 22:45:54,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-02-17 22:45:54,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-17 22:45:54,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-17 22:45:54,800 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-17 22:45:54,800 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-17 22:45:54,800 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-02-17 22:45:55,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-17 22:45:55,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-17 22:45:55,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-17 22:45:55,021 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2025-02-17 22:45:55,021 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2025-02-17 22:45:55,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/cav23-termute-examples/4_plus_thr/bb7.c.bpl [2025-02-17 22:45:55,023 INFO L110 BoogieParser]: Parsing: '/storage/cav23-termute-examples/4_plus_thr/bb7.c.bpl' [2025-02-17 22:45:55,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-17 22:45:55,039 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2025-02-17 22:45:55,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:55,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-17 22:45:55,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-17 22:45:55,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,060 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2025-02-17 22:45:55,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-17 22:45:55,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-17 22:45:55,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-17 22:45:55,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-17 22:45:55,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,073 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-17 22:45:55,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-02-17 22:45:55,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-02-17 22:45:55,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-02-17 22:45:55,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/1) ... [2025-02-17 22:45:55,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:55,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:55,105 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 22:45:55,107 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 22:45:55,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2025-02-17 22:45:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-17 22:45:55,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-17 22:45:55,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2025-02-17 22:45:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-17 22:45:55,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-17 22:45:55,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2025-02-17 22:45:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-17 22:45:55,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-17 22:45:55,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2025-02-17 22:45:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-17 22:45:55,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-17 22:45:55,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2025-02-17 22:45:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-17 22:45:55,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-17 22:45:55,131 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 22:45:55,168 INFO L234 CfgBuilder]: Building ICFG [2025-02-17 22:45:55,170 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-17 22:45:55,279 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-17 22:45:55,279 INFO L283 CfgBuilder]: Performing block encoding [2025-02-17 22:45:55,294 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-17 22:45:55,294 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-17 22:45:55,295 INFO L201 PluginConnector]: Adding new model bb7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:55 BoogieIcfgContainer [2025-02-17 22:45:55,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-02-17 22:45:55,297 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-17 22:45:55,297 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-17 22:45:55,301 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-17 22:45:55,302 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:55,302 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 10:45:55" (1/2) ... [2025-02-17 22:45:55,303 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@110e65e2 and model type bb7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 10:45:55, skipping insertion in model container [2025-02-17 22:45:55,303 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-17 22:45:55,303 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "bb7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:45:55" (2/2) ... [2025-02-17 22:45:55,304 INFO L363 chiAutomizerObserver]: Analyzing ICFG bb7.c.bpl [2025-02-17 22:45:55,364 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-17 22:45:55,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 136 flow [2025-02-17 22:45:55,425 INFO L124 PetriNetUnfolderBase]: 8/46 cut-off events. [2025-02-17 22:45:55,427 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-17 22:45:55,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 8/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 114 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-02-17 22:45:55,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 54 transitions, 136 flow [2025-02-17 22:45:55,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 46 transitions, 116 flow [2025-02-17 22:45:55,451 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-17 22:45:55,452 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-17 22:45:55,452 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-17 22:45:55,453 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-17 22:45:55,453 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-17 22:45:55,453 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-17 22:45:55,453 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-17 22:45:55,453 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-17 22:45:55,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-02-17 22:45:56,077 INFO L131 ngComponentsAnalysis]: Automaton has 1388 accepting balls. 4840 [2025-02-17 22:45:56,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:56,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:56,082 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:56,082 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:56,083 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-17 22:45:56,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 5267 states, but on-demand construction may add more states [2025-02-17 22:45:56,189 INFO L131 ngComponentsAnalysis]: Automaton has 1388 accepting balls. 4840 [2025-02-17 22:45:56,189 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:56,189 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:56,190 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-17 22:45:56,190 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:56,194 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" [2025-02-17 22:45:56,195 INFO L754 eck$LassoCheckResult]: Loop: "[121] L26-->L28: 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[]" "[123] L28-->L26: Formula: (= v_x1_2 (+ v_x1_3 1)) InVars {x1=v_x1_3} OutVars{x1=v_x1_2} AuxVars[] AssignedVars[x1]" [2025-02-17 22:45:56,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash 4591, now seen corresponding path program 1 times [2025-02-17 22:45:56,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:56,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525036419] [2025-02-17 22:45:56,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:56,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:56,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:56,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:56,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:56,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:56,254 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:56,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:56,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:56,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:56,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:56,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:56,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash 4835, now seen corresponding path program 1 times [2025-02-17 22:45:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:56,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450177691] [2025-02-17 22:45:56,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:56,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:56,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:56,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:56,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:56,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:56,274 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:56,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:56,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:56,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:56,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:56,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:56,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash 4415825, now seen corresponding path program 1 times [2025-02-17 22:45:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:56,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144886775] [2025-02-17 22:45:56,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:56,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:56,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:56,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:56,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:56,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:56,287 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:56,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:45:56,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:45:56,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:56,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:56,291 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:56,339 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:56,340 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:56,340 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:56,340 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:56,340 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:56,340 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:56,340 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:56,340 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:56,340 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:56,340 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:56,340 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:56,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:56,401 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:56,402 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:56,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:56,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:56,406 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 22:45:56,409 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 22:45:56,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:56,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:56,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:56,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:56,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:56,434 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 22:45:56,436 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 22:45:56,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:56,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:56,512 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:56,517 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 22:45:56,517 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:56,517 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:56,517 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:56,518 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:56,518 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:56,518 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:56,518 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:56,518 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:56,518 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration1_Loop [2025-02-17 22:45:56,518 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:56,518 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:56,519 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:56,544 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:56,547 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:56,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:56,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:56,550 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 22:45:56,574 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 22:45:56,578 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 22:45:56,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:56,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:56,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:56,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:56,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:56,598 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:56,598 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:56,602 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:56,608 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:45:56,608 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:45:56,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:56,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:56,613 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 22:45:56,614 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 22:45:56,615 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:56,615 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:56,615 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:56,616 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x1) = 1*z - 1*x1 Supporting invariants [] [2025-02-17 22:45:56,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:56,628 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:56,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:56,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:56,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:56,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:56,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:56,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:56,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:56,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:56,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:56,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:56,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:56,686 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:56,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:56,713 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 22:45:56,731 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 22:45:56,746 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 5267 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:56,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-17 22:45:57,386 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 5267 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18338 states and 85592 transitions. Complement of second has 7 states. [2025-02-17 22:45:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:45:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:45:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2025-02-17 22:45:57,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-17 22:45:57,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:57,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:45:57,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:57,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 166 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-17 22:45:57,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:45:57,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18338 states and 85592 transitions. [2025-02-17 22:45:57,786 INFO L131 ngComponentsAnalysis]: Automaton has 1756 accepting balls. 5000 [2025-02-17 22:45:58,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18338 states to 15000 states and 70689 transitions. [2025-02-17 22:45:58,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5844 [2025-02-17 22:45:58,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8960 [2025-02-17 22:45:58,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15000 states and 70689 transitions. [2025-02-17 22:45:58,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:45:58,303 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15000 states and 70689 transitions. [2025-02-17 22:45:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15000 states and 70689 transitions. [2025-02-17 22:45:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15000 to 11886. [2025-02-17 22:45:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11886 states, 11886 states have (on average 4.836362106680128) internal successors, (57485), 11885 states have internal predecessors, (57485), 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 22:45:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11886 states to 11886 states and 57485 transitions. [2025-02-17 22:45:58,967 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11886 states and 57485 transitions. [2025-02-17 22:45:58,968 INFO L432 stractBuchiCegarLoop]: Abstraction has 11886 states and 57485 transitions. [2025-02-17 22:45:58,968 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-17 22:45:58,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11886 states and 57485 transitions. [2025-02-17 22:45:59,058 INFO L131 ngComponentsAnalysis]: Automaton has 1756 accepting balls. 5000 [2025-02-17 22:45:59,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:45:59,058 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:45:59,059 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-17 22:45:59,059 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:45:59,060 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" [2025-02-17 22:45:59,060 INFO L754 eck$LassoCheckResult]: Loop: "[130] L41-->L43: Formula: (< v_x3_5 v_z_5) InVars {x3=v_x3_5, z=v_z_5} OutVars{x3=v_x3_5, z=v_z_5} AuxVars[] AssignedVars[]" "[132] L43-->L41: Formula: (= (+ v_x3_7 1) v_x3_6) InVars {x3=v_x3_7} OutVars{x3=v_x3_6} AuxVars[] AssignedVars[x3]" [2025-02-17 22:45:59,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash 142482, now seen corresponding path program 1 times [2025-02-17 22:45:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:59,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880391955] [2025-02-17 22:45:59,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:59,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:59,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:59,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:59,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:59,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:59,067 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:59,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:59,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:59,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:59,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:59,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:59,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:59,074 INFO L85 PathProgramCache]: Analyzing trace with hash 5123, now seen corresponding path program 1 times [2025-02-17 22:45:59,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:59,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191701290] [2025-02-17 22:45:59,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:59,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:59,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:59,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:59,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:59,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:59,079 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:59,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:59,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:59,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:59,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:59,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:59,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:59,085 INFO L85 PathProgramCache]: Analyzing trace with hash 136929364, now seen corresponding path program 1 times [2025-02-17 22:45:59,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:45:59,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539995082] [2025-02-17 22:45:59,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:45:59,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:45:59,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:59,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:59,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:59,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:59,091 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:45:59,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:45:59,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:45:59,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:59,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:45:59,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:45:59,116 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:59,116 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:59,116 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:59,116 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:59,116 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:45:59,116 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:59,117 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:59,117 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:59,117 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:59,117 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:59,117 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:59,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:59,139 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:59,139 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:45:59,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:59,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:59,142 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 22:45:59,144 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 22:45:59,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:45:59,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:59,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-02-17 22:45:59,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:59,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:59,165 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 22:45:59,166 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 22:45:59,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:45:59,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:45:59,235 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:45:59,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-17 22:45:59,240 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:45:59,240 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:45:59,240 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:45:59,240 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:45:59,240 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:45:59,240 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:59,240 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:45:59,240 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:45:59,240 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration2_Loop [2025-02-17 22:45:59,240 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:45:59,240 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:45:59,240 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:45:59,263 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:45:59,263 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:45:59,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:59,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:59,265 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 22:45:59,266 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 22:45:59,267 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 22:45:59,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:45:59,277 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:45:59,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:45:59,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:45:59,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:45:59,278 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:45:59,278 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:45:59,280 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:45:59,283 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:45:59,283 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:45:59,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:45:59,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:45:59,285 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 22:45:59,286 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 22:45:59,288 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:45:59,288 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:45:59,288 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:45:59,288 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x3) = 1*z - 1*x3 Supporting invariants [] [2025-02-17 22:45:59,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-17 22:45:59,294 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:45:59,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:45:59,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-17 22:45:59,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-17 22:45:59,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:59,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:59,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:45:59,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:59,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:45:59,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:45:59,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:45:59,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:45:59,328 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:45:59,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:45:59,339 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 22:45:59,340 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 22:45:59,340 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11886 states and 57485 transitions. cyclomatic complexity: 48615 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 22:45:59,655 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 22:46:00,159 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11886 states and 57485 transitions. cyclomatic complexity: 48615. 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 42933 states and 210258 transitions. Complement of second has 7 states. [2025-02-17 22:46:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:00,163 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 22:46:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2025-02-17 22:46:00,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-17 22:46:00,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:00,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:46:00,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:00,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 167 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-17 22:46:00,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:00,164 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42933 states and 210258 transitions. [2025-02-17 22:46:00,860 INFO L131 ngComponentsAnalysis]: Automaton has 1973 accepting balls. 4726 [2025-02-17 22:46:01,491 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42933 states to 31253 states and 155588 transitions. [2025-02-17 22:46:01,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8996 [2025-02-17 22:46:01,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12512 [2025-02-17 22:46:01,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31253 states and 155588 transitions. [2025-02-17 22:46:01,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:01,537 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31253 states and 155588 transitions. [2025-02-17 22:46:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31253 states and 155588 transitions. [2025-02-17 22:46:02,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31253 to 27739. [2025-02-17 22:46:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27739 states, 27739 states have (on average 5.096146220123292) internal successors, (141362), 27738 states have internal predecessors, (141362), 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 22:46:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27739 states to 27739 states and 141362 transitions. [2025-02-17 22:46:02,520 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27739 states and 141362 transitions. [2025-02-17 22:46:02,520 INFO L432 stractBuchiCegarLoop]: Abstraction has 27739 states and 141362 transitions. [2025-02-17 22:46:02,520 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-17 22:46:02,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27739 states and 141362 transitions. [2025-02-17 22:46:02,851 INFO L131 ngComponentsAnalysis]: Automaton has 1973 accepting balls. 4726 [2025-02-17 22:46:02,851 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:02,851 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:02,853 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-17 22:46:02,853 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:02,853 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[164] L14-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" [2025-02-17 22:46:02,853 INFO L754 eck$LassoCheckResult]: Loop: "[139] L56-->L58: Formula: (< v_x4_5 v_z_9) InVars {x4=v_x4_5, z=v_z_9} OutVars{x4=v_x4_5, z=v_z_9} AuxVars[] AssignedVars[]" "[141] L58-->L56: Formula: (= v_x4_6 (+ v_x4_7 1)) InVars {x4=v_x4_7} OutVars{x4=v_x4_6} AuxVars[] AssignedVars[x4]" [2025-02-17 22:46:02,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash 4417106, now seen corresponding path program 1 times [2025-02-17 22:46:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:02,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275937631] [2025-02-17 22:46:02,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:02,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:02,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:02,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:02,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:02,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:02,866 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:02,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:02,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:02,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:02,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:02,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:02,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:02,874 INFO L85 PathProgramCache]: Analyzing trace with hash 5411, now seen corresponding path program 1 times [2025-02-17 22:46:02,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:02,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596451940] [2025-02-17 22:46:02,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:02,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:02,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:02,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:02,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:02,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:02,883 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:02,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:02,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:02,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:02,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:02,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:02,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash -50123980, now seen corresponding path program 1 times [2025-02-17 22:46:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612367542] [2025-02-17 22:46:02,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:02,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:46:02,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:46:02,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:02,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:02,902 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:02,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-17 22:46:02,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-17 22:46:02,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:02,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:02,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:02,940 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:02,940 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:02,940 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:02,940 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:02,940 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:02,940 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:02,940 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:02,940 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:02,940 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:46:02,940 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:02,940 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:02,941 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:03,000 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:03,000 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:03,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:03,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:03,002 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 22:46:03,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:03,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:03,097 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 22:46:03,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:03,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:03,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:03,124 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 22:46:03,125 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 22:46:03,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:03,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:03,216 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:03,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:03,220 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:03,220 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:03,221 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:03,221 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:03,221 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:03,221 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:03,221 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:03,221 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:03,221 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration3_Loop [2025-02-17 22:46:03,221 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:03,221 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:03,222 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:03,257 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:03,257 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:03,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:03,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:03,263 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 22:46:03,270 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 22:46:03,273 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 22:46:03,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:03,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:03,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:03,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:03,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:03,287 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:03,287 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:03,291 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:03,294 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:46:03,294 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:03,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:03,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:03,297 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 22:46:03,306 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 22:46:03,306 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:03,306 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:03,306 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:03,307 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x4, z) = -1*x4 + 1*z Supporting invariants [] [2025-02-17 22:46:03,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:03,313 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:03,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:03,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-17 22:46:03,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-17 22:46:03,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:03,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:03,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:03,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:03,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:03,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:03,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:03,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:03,381 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:03,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:03,410 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 22:46:03,411 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 22:46:03,411 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27739 states and 141362 transitions. cyclomatic complexity: 119513 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:04,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-17 22:46:04,890 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27739 states and 141362 transitions. cyclomatic complexity: 119513. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101343 states and 519149 transitions. Complement of second has 7 states. [2025-02-17 22:46:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:04,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-02-17 22:46:04,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-17 22:46:04,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:04,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-17 22:46:04,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:04,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 175 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-17 22:46:04,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:04,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101343 states and 519149 transitions. [2025-02-17 22:46:06,707 INFO L131 ngComponentsAnalysis]: Automaton has 1449 accepting balls. 3086 [2025-02-17 22:46:07,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101343 states to 65163 states and 337875 transitions. [2025-02-17 22:46:07,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14459 [2025-02-17 22:46:07,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17791 [2025-02-17 22:46:07,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65163 states and 337875 transitions. [2025-02-17 22:46:07,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:07,932 INFO L218 hiAutomatonCegarLoop]: Abstraction has 65163 states and 337875 transitions. [2025-02-17 22:46:08,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65163 states and 337875 transitions. [2025-02-17 22:46:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65163 to 59395. [2025-02-17 22:46:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59395 states, 59395 states have (on average 5.290361141510228) internal successors, (314221), 59394 states have internal predecessors, (314221), 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 22:46:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59395 states to 59395 states and 314221 transitions. [2025-02-17 22:46:10,454 INFO L240 hiAutomatonCegarLoop]: Abstraction has 59395 states and 314221 transitions. [2025-02-17 22:46:10,454 INFO L432 stractBuchiCegarLoop]: Abstraction has 59395 states and 314221 transitions. [2025-02-17 22:46:10,454 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-17 22:46:10,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59395 states and 314221 transitions. [2025-02-17 22:46:11,058 INFO L131 ngComponentsAnalysis]: Automaton has 1449 accepting balls. 3086 [2025-02-17 22:46:11,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:11,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:11,060 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:46:11,060 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:11,060 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[164] L14-->L56: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar0_2) (= 3 v_thread3Thread1of1ForFork2_thidvar1_2) (= 3 v_thread3Thread1of1ForFork2_thidvar2_2)) InVars {} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_2, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_2, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_2} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_thidvar2, thread3Thread1of1ForFork2_thidvar1, thread3Thread1of1ForFork2_thidvar0]" "[167] L15-->L71: Formula: (and (= v_thread4Thread1of1ForFork3_thidvar2_2 4) (= v_thread4Thread1of1ForFork3_thidvar3_2 4) (= v_thread4Thread1of1ForFork3_thidvar0_2 4) (= v_thread4Thread1of1ForFork3_thidvar1_2 4)) InVars {} OutVars{thread4Thread1of1ForFork3_thidvar1=v_thread4Thread1of1ForFork3_thidvar1_2, thread4Thread1of1ForFork3_thidvar0=v_thread4Thread1of1ForFork3_thidvar0_2, thread4Thread1of1ForFork3_thidvar3=v_thread4Thread1of1ForFork3_thidvar3_2, thread4Thread1of1ForFork3_thidvar2=v_thread4Thread1of1ForFork3_thidvar2_2} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_thidvar1, thread4Thread1of1ForFork3_thidvar0, thread4Thread1of1ForFork3_thidvar3, thread4Thread1of1ForFork3_thidvar2]" [2025-02-17 22:46:11,061 INFO L754 eck$LassoCheckResult]: Loop: "[148] L71-->L73: Formula: (< v_x5_5 v_z_15) InVars {x5=v_x5_5, z=v_z_15} OutVars{x5=v_x5_5, z=v_z_15} AuxVars[] AssignedVars[]" "[150] L73-->L71: Formula: (= v_x5_6 (+ v_x5_7 1)) InVars {x5=v_x5_7} OutVars{x5=v_x5_6} AuxVars[] AssignedVars[x5]" [2025-02-17 22:46:11,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash 136930453, now seen corresponding path program 1 times [2025-02-17 22:46:11,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:11,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571691248] [2025-02-17 22:46:11,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:11,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:11,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:11,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:11,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,065 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:11,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:11,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:11,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:11,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:11,068 INFO L85 PathProgramCache]: Analyzing trace with hash 5699, now seen corresponding path program 1 times [2025-02-17 22:46:11,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:11,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656988600] [2025-02-17 22:46:11,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:11,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:11,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:11,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:11,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,071 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:11,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:11,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:11,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:11,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:11,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1553816105, now seen corresponding path program 1 times [2025-02-17 22:46:11,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:11,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455798404] [2025-02-17 22:46:11,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:11,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:11,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:46:11,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:46:11,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,082 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:11,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-17 22:46:11,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-17 22:46:11,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:11,086 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:11,101 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:11,102 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:11,102 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:11,102 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:11,102 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:11,102 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,102 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:11,102 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:11,102 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:46:11,102 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:11,102 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:11,102 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:11,118 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:11,118 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:11,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:11,120 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 22:46:11,122 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 22:46:11,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:11,123 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:11,139 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 22:46:11,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:11,142 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 22:46:11,143 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 22:46:11,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:11,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:11,207 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:11,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:11,211 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:11,211 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:11,211 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:11,211 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:11,211 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:11,211 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,211 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:11,211 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:11,211 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration4_Loop [2025-02-17 22:46:11,211 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:11,211 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:11,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:11,225 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:11,225 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:11,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:11,227 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 22:46:11,227 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 22:46:11,228 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 22:46:11,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:11,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:11,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:11,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:11,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:11,239 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:11,239 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:11,241 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:11,244 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:11,244 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:11,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:11,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:11,246 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 22:46:11,247 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 22:46:11,248 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:11,248 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:11,249 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:11,249 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x5, z) = -1*x5 + 1*z Supporting invariants [] [2025-02-17 22:46:11,255 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 22:46:11,256 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:11,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:11,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:11,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:11,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:11,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:11,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:11,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:11,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:11,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:11,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:11,289 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:11,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:11,300 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 22:46:11,301 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 22:46:11,301 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 59395 states and 314221 transitions. cyclomatic complexity: 265054 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:11,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:14,137 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 59395 states and 314221 transitions. cyclomatic complexity: 265054. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 195122 states and 1023917 transitions. Complement of second has 7 states. [2025-02-17 22:46:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2025-02-17 22:46:14,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:46:14,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:14,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:46:14,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:14,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 181 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:46:14,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:14,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195122 states and 1023917 transitions. [2025-02-17 22:46:17,980 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 186 [2025-02-17 22:46:18,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195122 states to 3816 states and 15176 transitions. [2025-02-17 22:46:18,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1151 [2025-02-17 22:46:18,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1151 [2025-02-17 22:46:18,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3816 states and 15176 transitions. [2025-02-17 22:46:18,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:18,017 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-02-17 22:46:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states and 15176 transitions. [2025-02-17 22:46:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3816. [2025-02-17 22:46:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3816 states have (on average 3.9769392033542976) internal successors, (15176), 3815 states have internal predecessors, (15176), 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 22:46:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 15176 transitions. [2025-02-17 22:46:18,080 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-02-17 22:46:18,080 INFO L432 stractBuchiCegarLoop]: Abstraction has 3816 states and 15176 transitions. [2025-02-17 22:46:18,080 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-17 22:46:18,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3816 states and 15176 transitions. [2025-02-17 22:46:18,097 INFO L131 ngComponentsAnalysis]: Automaton has 93 accepting balls. 186 [2025-02-17 22:46:18,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:18,097 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:18,097 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-17 22:46:18,098 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:18,098 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[124] L31-->L32-1: Formula: (<= 4 v_x2_3) InVars {x2=v_x2_3} OutVars{x2=v_x2_3} AuxVars[] AssignedVars[]" [2025-02-17 22:46:18,098 INFO L754 eck$LassoCheckResult]: Loop: "[126] L32-1-->L34: Formula: (< v_x3_1 v_z_3) InVars {x3=v_x3_1, z=v_z_3} OutVars{x3=v_x3_1, z=v_z_3} AuxVars[] AssignedVars[]" "[128] L34-->L32-1: Formula: (= v_x3_2 (+ v_x3_3 1)) InVars {x3=v_x3_3} OutVars{x3=v_x3_2} AuxVars[] AssignedVars[x3]" [2025-02-17 22:46:18,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:18,098 INFO L85 PathProgramCache]: Analyzing trace with hash 136889707, now seen corresponding path program 1 times [2025-02-17 22:46:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884287145] [2025-02-17 22:46:18,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:18,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:18,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:18,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:18,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:18,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:18,139 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 22:46:18,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:46:18,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884287145] [2025-02-17 22:46:18,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884287145] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:46:18,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:46:18,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-17 22:46:18,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330518786] [2025-02-17 22:46:18,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:46:18,149 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:46:18,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash 4995, now seen corresponding path program 1 times [2025-02-17 22:46:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282854467] [2025-02-17 22:46:18,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:18,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:18,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:18,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:18,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:18,153 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:18,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:18,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:18,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:18,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:18,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:18,165 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:18,166 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:18,166 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:18,166 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:18,166 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:18,166 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:18,166 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:18,166 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:18,166 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:46:18,166 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:18,166 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:18,166 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:18,179 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:18,179 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:18,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:18,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:18,181 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:18,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-17 22:46:18,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:18,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:18,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-02-17 22:46:18,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:18,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:18,200 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:18,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-17 22:46:18,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:18,202 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:18,271 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:18,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-02-17 22:46:18,276 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:18,276 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:18,276 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:18,276 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:18,276 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:18,276 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:18,276 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:18,276 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:18,276 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration5_Loop [2025-02-17 22:46:18,276 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:18,276 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:18,277 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:18,290 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:18,291 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:18,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:18,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:18,293 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:18,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-17 22:46:18,295 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 22:46:18,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:18,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:18,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:18,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:18,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:18,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:18,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:18,308 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:18,309 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-17 22:46:18,309 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-17 22:46:18,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:18,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:18,311 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-17 22:46:18,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-17 22:46:18,313 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:18,313 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:18,313 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:18,313 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x3, z) = -1*x3 + 1*z Supporting invariants [] [2025-02-17 22:46:18,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-17 22:46:18,318 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:18,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:18,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-17 22:46:18,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-17 22:46:18,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:18,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:18,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:18,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:18,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:18,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:18,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:18,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:18,356 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:18,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:18,367 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 22:46:18,367 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 22:46:18,367 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 3816 states and 15176 transitions. cyclomatic complexity: 12010 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:18,482 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 3816 states and 15176 transitions. cyclomatic complexity: 12010. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8572 states and 35258 transitions. Complement of second has 7 states. [2025-02-17 22:46:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-02-17 22:46:18,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-17 22:46:18,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:18,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-17 22:46:18,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:18,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 108 transitions. Stem has 5 letters. Loop has 4 letters. [2025-02-17 22:46:18,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:18,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8572 states and 35258 transitions. [2025-02-17 22:46:18,555 INFO L131 ngComponentsAnalysis]: Automaton has 94 accepting balls. 188 [2025-02-17 22:46:18,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8572 states to 5167 states and 20286 transitions. [2025-02-17 22:46:18,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1218 [2025-02-17 22:46:18,592 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1443 [2025-02-17 22:46:18,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5167 states and 20286 transitions. [2025-02-17 22:46:18,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:18,592 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5167 states and 20286 transitions. [2025-02-17 22:46:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states and 20286 transitions. [2025-02-17 22:46:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 3941. [2025-02-17 22:46:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3941 states have (on average 3.9662522202486676) internal successors, (15631), 3940 states have internal predecessors, (15631), 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 22:46:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 15631 transitions. [2025-02-17 22:46:18,663 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3941 states and 15631 transitions. [2025-02-17 22:46:18,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:46:18,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-17 22:46:18,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-17 22:46:18,666 INFO L87 Difference]: Start difference. First operand 3941 states and 15631 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:18,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:46:18,716 INFO L93 Difference]: Finished difference Result 2462 states and 9380 transitions. [2025-02-17 22:46:18,716 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2462 states and 9380 transitions. [2025-02-17 22:46:18,733 INFO L131 ngComponentsAnalysis]: Automaton has 75 accepting balls. 150 [2025-02-17 22:46:18,747 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2462 states to 2452 states and 9330 transitions. [2025-02-17 22:46:18,747 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 743 [2025-02-17 22:46:18,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 743 [2025-02-17 22:46:18,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2452 states and 9330 transitions. [2025-02-17 22:46:18,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:18,748 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-02-17 22:46:18,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states and 9330 transitions. [2025-02-17 22:46:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2452. [2025-02-17 22:46:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2452 states have (on average 3.805057096247961) internal successors, (9330), 2451 states have internal predecessors, (9330), 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 22:46:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 9330 transitions. [2025-02-17 22:46:18,784 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-02-17 22:46:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-17 22:46:18,785 INFO L432 stractBuchiCegarLoop]: Abstraction has 2452 states and 9330 transitions. [2025-02-17 22:46:18,785 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-17 22:46:18,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2452 states and 9330 transitions. [2025-02-17 22:46:18,795 INFO L131 ngComponentsAnalysis]: Automaton has 75 accepting balls. 150 [2025-02-17 22:46:18,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:18,796 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:18,796 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:46:18,796 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:18,796 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1]" "[129] L41-->L45: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[131] L45-->L46: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[133] L46-->L47-1: Formula: (<= 4 v_x2_6) InVars {x2=v_x2_6} OutVars{x2=v_x2_6} AuxVars[] AssignedVars[]" [2025-02-17 22:46:18,796 INFO L754 eck$LassoCheckResult]: Loop: "[135] L47-1-->L49: 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[]" "[137] L49-->L47-1: Formula: (= (+ v_x4_3 1) v_x4_2) InVars {x4=v_x4_3} OutVars{x4=v_x4_2} AuxVars[] AssignedVars[x4]" [2025-02-17 22:46:18,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:18,797 INFO L85 PathProgramCache]: Analyzing trace with hash -957082353, now seen corresponding path program 1 times [2025-02-17 22:46:18,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:18,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327655890] [2025-02-17 22:46:18,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:18,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:18,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:46:18,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:46:18,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:18,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:18,835 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 22:46:18,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:46:18,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327655890] [2025-02-17 22:46:18,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327655890] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:46:18,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:46:18,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-17 22:46:18,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451612462] [2025-02-17 22:46:18,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:46:18,836 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:46:18,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 5283, now seen corresponding path program 1 times [2025-02-17 22:46:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:18,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883781033] [2025-02-17 22:46:18,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:18,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:18,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:18,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:18,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:18,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:18,838 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:18,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:18,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:18,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:18,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:18,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:18,851 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:18,851 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:18,851 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:18,851 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:18,851 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:18,851 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:18,851 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:18,851 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:18,851 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration6_Loop [2025-02-17 22:46:18,851 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:18,852 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:18,852 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:18,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-17 22:46:18,946 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:18,946 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:18,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:18,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:18,949 INFO L229 MonitoredProcess]: Starting monitored process 22 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 22:46:18,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-17 22:46:18,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:18,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:18,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-02-17 22:46:18,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:18,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:18,969 INFO L229 MonitoredProcess]: Starting monitored process 23 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 22:46:18,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-17 22:46:18,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:18,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:19,036 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:19,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-02-17 22:46:19,040 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:19,040 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:19,040 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:19,040 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:19,040 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:19,040 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:19,040 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:19,040 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:19,040 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration6_Loop [2025-02-17 22:46:19,040 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:19,040 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:19,040 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:19,059 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:19,059 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:19,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:19,061 INFO L229 MonitoredProcess]: Starting monitored process 24 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 22:46:19,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-17 22:46:19,062 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 22:46:19,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:19,071 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:19,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:19,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:19,072 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:19,072 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:19,072 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:19,074 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:19,076 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:19,076 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:19,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:19,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:19,080 INFO L229 MonitoredProcess]: Starting monitored process 25 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 22:46:19,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-17 22:46:19,081 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:19,081 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:19,081 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:19,081 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(x4, z) = -1*x4 + 1*z Supporting invariants [] [2025-02-17 22:46:19,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-02-17 22:46:19,086 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:19,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:19,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-17 22:46:19,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-17 22:46:19,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:19,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:19,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:19,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:19,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:19,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:19,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:19,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:19,119 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:19,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:19,129 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 22:46:19,130 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 22:46:19,130 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 2452 states and 9330 transitions. cyclomatic complexity: 7323 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:19,201 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 2452 states and 9330 transitions. cyclomatic complexity: 7323. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 4978 states and 19892 transitions. Complement of second has 7 states. [2025-02-17 22:46:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-17 22:46:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2025-02-17 22:46:19,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-17 22:46:19,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:19,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 10 letters. Loop has 2 letters. [2025-02-17 22:46:19,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:19,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 100 transitions. Stem has 8 letters. Loop has 4 letters. [2025-02-17 22:46:19,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:19,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4978 states and 19892 transitions. [2025-02-17 22:46:19,236 INFO L131 ngComponentsAnalysis]: Automaton has 70 accepting balls. 140 [2025-02-17 22:46:19,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4978 states to 3235 states and 12053 transitions. [2025-02-17 22:46:19,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 806 [2025-02-17 22:46:19,252 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 975 [2025-02-17 22:46:19,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3235 states and 12053 transitions. [2025-02-17 22:46:19,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:19,252 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3235 states and 12053 transitions. [2025-02-17 22:46:19,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states and 12053 transitions. [2025-02-17 22:46:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2535. [2025-02-17 22:46:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 2535 states have (on average 3.7956607495069035) internal successors, (9622), 2534 states have internal predecessors, (9622), 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 22:46:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 9622 transitions. [2025-02-17 22:46:19,283 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2535 states and 9622 transitions. [2025-02-17 22:46:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:46:19,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-17 22:46:19,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-17 22:46:19,283 INFO L87 Difference]: Start difference. First operand 2535 states and 9622 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-17 22:46:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:46:19,317 INFO L93 Difference]: Finished difference Result 1051 states and 3900 transitions. [2025-02-17 22:46:19,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1051 states and 3900 transitions. [2025-02-17 22:46:19,321 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 50 [2025-02-17 22:46:19,325 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1051 states to 901 states and 3289 transitions. [2025-02-17 22:46:19,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2025-02-17 22:46:19,325 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2025-02-17 22:46:19,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 901 states and 3289 transitions. [2025-02-17 22:46:19,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-17 22:46:19,325 INFO L218 hiAutomatonCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-02-17 22:46:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states and 3289 transitions. [2025-02-17 22:46:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2025-02-17 22:46:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 901 states have (on average 3.6503884572697003) internal successors, (3289), 900 states have internal predecessors, (3289), 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 22:46:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 3289 transitions. [2025-02-17 22:46:19,336 INFO L240 hiAutomatonCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-02-17 22:46:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-17 22:46:19,336 INFO L432 stractBuchiCegarLoop]: Abstraction has 901 states and 3289 transitions. [2025-02-17 22:46:19,336 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-02-17 22:46:19,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 901 states and 3289 transitions. [2025-02-17 22:46:19,339 INFO L131 ngComponentsAnalysis]: Automaton has 25 accepting balls. 50 [2025-02-17 22:46:19,339 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-17 22:46:19,339 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-17 22:46:19,340 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-17 22:46:19,340 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-17 22:46:19,340 INFO L752 eck$LassoCheckResult]: Stem: "[112] $Ultimate##0-->L13: Formula: (= v_x2_10 0) InVars {} OutVars{x2=v_x2_10} AuxVars[] AssignedVars[x2]" "[158] L13-->L26: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0]" "[161] L13-1-->L41: 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]" "[129] L41-->L45: Formula: (<= v_z_6 v_x3_8) InVars {x3=v_x3_8, z=v_z_6} OutVars{x3=v_x3_8, z=v_z_6} AuxVars[] AssignedVars[]" "[131] L45-->L46: Formula: (= (+ v_x2_5 1) v_x2_4) InVars {x2=v_x2_5} OutVars{x2=v_x2_4} AuxVars[] AssignedVars[x2]" "[164] L14-->L56: 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]" "[120] L26-->L30: Formula: (<= v_z_2 v_x1_4) InVars {x1=v_x1_4, z=v_z_2} OutVars{x1=v_x1_4, z=v_z_2} AuxVars[] AssignedVars[]" "[122] L30-->L31: Formula: (= v_x2_1 (+ v_x2_2 1)) InVars {x2=v_x2_2} OutVars{x2=v_x2_1} AuxVars[] AssignedVars[x2]" "[138] L56-->L60: Formula: (<= v_z_10 v_x4_8) InVars {x4=v_x4_8, z=v_z_10} OutVars{x4=v_x4_8, z=v_z_10} AuxVars[] AssignedVars[]" "[140] L60-->L61: Formula: (= v_x2_7 (+ v_x2_8 1)) InVars {x2=v_x2_8} OutVars{x2=v_x2_7} AuxVars[] AssignedVars[x2]" "[142] L61-->L62-1: Formula: (<= 4 v_x2_9) InVars {x2=v_x2_9} OutVars{x2=v_x2_9} AuxVars[] AssignedVars[]" [2025-02-17 22:46:19,340 INFO L754 eck$LassoCheckResult]: Loop: "[144] L62-1-->L64: Formula: (< v_x5_1 v_z_11) InVars {x5=v_x5_1, z=v_z_11} OutVars{x5=v_x5_1, z=v_z_11} AuxVars[] AssignedVars[]" "[146] L64-->L62-1: Formula: (= v_x5_2 (+ v_x5_3 1)) InVars {x5=v_x5_3} OutVars{x5=v_x5_2} AuxVars[] AssignedVars[x5]" [2025-02-17 22:46:19,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:19,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1189822374, now seen corresponding path program 1 times [2025-02-17 22:46:19,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:19,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608995810] [2025-02-17 22:46:19,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:19,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:19,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-17 22:46:19,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-17 22:46:19,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:19,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:19,396 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 22:46:19,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-17 22:46:19,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608995810] [2025-02-17 22:46:19,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608995810] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-17 22:46:19,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-17 22:46:19,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-17 22:46:19,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255678270] [2025-02-17 22:46:19,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-17 22:46:19,396 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-17 22:46:19,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash 5571, now seen corresponding path program 1 times [2025-02-17 22:46:19,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-17 22:46:19,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190073371] [2025-02-17 22:46:19,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-17 22:46:19,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-17 22:46:19,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:19,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:19,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:19,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:19,399 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-17 22:46:19,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:19,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:19,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:19,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-17 22:46:19,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-17 22:46:19,420 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:19,420 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:19,420 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:19,420 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:19,420 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-17 22:46:19,420 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:19,420 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:19,420 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:19,420 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration7_Loop [2025-02-17 22:46:19,420 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:19,420 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:19,420 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:19,434 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:19,434 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-17 22:46:19,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:19,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:19,436 INFO L229 MonitoredProcess]: Starting monitored process 26 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 22:46:19,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-17 22:46:19,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-17 22:46:19,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:19,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-17 22:46:19,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:19,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:19,454 INFO L229 MonitoredProcess]: Starting monitored process 27 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 22:46:19,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-02-17 22:46:19,456 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-17 22:46:19,456 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-17 22:46:19,518 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-17 22:46:19,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-02-17 22:46:19,522 INFO L204 LassoAnalysis]: Preferences: [2025-02-17 22:46:19,522 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-17 22:46:19,522 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-17 22:46:19,522 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-17 22:46:19,522 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-17 22:46:19,522 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:19,522 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-17 22:46:19,522 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-17 22:46:19,522 INFO L132 ssoRankerPreferences]: Filename of dumped script: bb7.c.bpl_petrified1_Iteration7_Loop [2025-02-17 22:46:19,522 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-17 22:46:19,522 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-17 22:46:19,522 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-17 22:46:19,535 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-17 22:46:19,535 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-17 22:46:19,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:19,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:19,537 INFO L229 MonitoredProcess]: Starting monitored process 28 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 22:46:19,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-02-17 22:46:19,539 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 22:46:19,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-17 22:46:19,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-17 22:46:19,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-17 22:46:19,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-17 22:46:19,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-17 22:46:19,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-17 22:46:19,549 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-17 22:46:19,550 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-17 22:46:19,553 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-17 22:46:19,553 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-17 22:46:19,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-17 22:46:19,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-02-17 22:46:19,576 INFO L229 MonitoredProcess]: Starting monitored process 29 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 22:46:19,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-02-17 22:46:19,577 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-17 22:46:19,578 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-17 22:46:19,578 INFO L474 LassoAnalysis]: Proved termination. [2025-02-17 22:46:19,578 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(z, x5) = 1*z - 1*x5 Supporting invariants [] [2025-02-17 22:46:19,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2025-02-17 22:46:19,583 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-17 22:46:19,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-17 22:46:19,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-17 22:46:19,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-17 22:46:19,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:19,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:19,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-17 22:46:19,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:19,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-17 22:46:19,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-17 22:46:19,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-17 22:46:19,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-17 22:46:19,624 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-17 22:46:19,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-17 22:46:19,637 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 22:46:19,637 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 22:46:19,638 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 901 states and 3289 transitions. cyclomatic complexity: 2551 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 22:46:19,670 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 901 states and 3289 transitions. cyclomatic complexity: 2551. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 1356 states and 4915 transitions. Complement of second has 6 states. [2025-02-17 22:46:19,671 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 22:46:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 22:46:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2025-02-17 22:46:19,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 11 letters. Loop has 2 letters. [2025-02-17 22:46:19,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:19,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 13 letters. Loop has 2 letters. [2025-02-17 22:46:19,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:19,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 60 transitions. Stem has 11 letters. Loop has 4 letters. [2025-02-17 22:46:19,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-17 22:46:19,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1356 states and 4915 transitions. [2025-02-17 22:46:19,679 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:46:19,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1356 states to 0 states and 0 transitions. [2025-02-17 22:46:19,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:46:19,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:46:19,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:46:19,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:46:19,679 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:19,679 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:19,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-17 22:46:19,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-17 22:46:19,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-17 22:46:19,680 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 22:46:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-17 22:46:19,680 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-17 22:46:19,680 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-17 22:46:19,680 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:46:19,680 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-17 22:46:19,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-17 22:46:19,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-17 22:46:19,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-17 22:46:19,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-17 22:46:19,680 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:19,680 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-17 22:46:19,680 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-17 22:46:19,680 INFO L338 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2025-02-17 22:46:19,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-17 22:46:19,680 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-17 22:46:19,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-17 22:46:19,686 INFO L201 PluginConnector]: Adding new model bb7.c.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 10:46:19 BoogieIcfgContainer [2025-02-17 22:46:19,686 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-17 22:46:19,686 INFO L158 Benchmark]: Toolchain (without parser) took 24647.13ms. Allocated memory was 159.4MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 86.1MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2025-02-17 22:46:19,686 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:46:19,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.28ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 84.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:46:19,687 INFO L158 Benchmark]: Boogie Preprocessor took 13.83ms. Allocated memory is still 159.4MB. Free memory was 84.8MB in the beginning and 84.0MB in the end (delta: 733.9kB). There was no memory consumed. Max. memory is 8.0GB. [2025-02-17 22:46:19,687 INFO L158 Benchmark]: RCFGBuilder took 216.68ms. Allocated memory is still 159.4MB. Free memory was 84.0MB in the beginning and 74.3MB in the end (delta: 9.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-02-17 22:46:19,687 INFO L158 Benchmark]: BuchiAutomizer took 24388.92ms. Allocated memory was 159.4MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 74.1MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2025-02-17 22:46:19,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.28ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 84.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 13.83ms. Allocated memory is still 159.4MB. Free memory was 84.8MB in the beginning and 84.0MB in the end (delta: 733.9kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 216.68ms. Allocated memory is still 159.4MB. Free memory was 84.0MB in the beginning and 74.3MB in the end (delta: 9.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * BuchiAutomizer took 24388.92ms. Allocated memory was 159.4MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 74.1MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 2.3GB. 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 10 terminating modules (3 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * x1 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x5 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x3 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x4 + z and consists of 5 locations. One deterministic module has affine ranking function -1 * x5 + z and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 24.2s and 8 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.4s. Büchi inclusion checks took 6.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 8. Automata minimization 4.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 14322 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 9.2s Buchi closure took 0.1s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 592 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 585 mSDsluCounter, 721 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 356 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 597 IncrementalHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 365 mSDtfsCounter, 597 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 67ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s 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 22:46:19,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-02-17 22:46:19,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-02-17 22:46:20,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...